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County Index - Co Londonderry
- 1ST Class Blinds - Co Londonderry - Limavady
- 3 P S Computer Services - Co Londonderry - Limavady
- 3JM Fencing Supplies - Co Londonderry - Maghera
- 4SYTHE 4SEWING - Co Londonderry - Magherafelt
- 8OVER8 Ltd. - Co Londonderry - Londonderry
- A Conway & Co. Ltd. - Co Londonderry - Londonderry
- A Gregg - Co Londonderry - Magherafelt
- A B A Developments - Co Londonderry - Londonderry
- A D Surveyors Ltd - Co Londonderry - Magherafelt
- A D Canning - Co Londonderry - Londonderry
- A Diamond & Son (Timber) Ltd. - Co Londonderry - Coleraine
- A E McCandless & Co. Ltd. - Co Londonderry - Londonderry
- A Gillan - Co Londonderry - Coleraine
- A J C Lamont (Trailers) - Co Londonderry - Coleraine
- A J Christie - Co Londonderry - Londonderry
- A McClements - Co Londonderry - Coleraine
- A P Equipment(N I) Ltd. - Co Londonderry - Magherafelt
- A Q B Architectural Workshop Ltd - Co Londonderry - Londonderry
- A Q B Architectural Workshop - Co Londonderry - Londonderry
- A S I - Co Londonderry - Londonderry
- A S I Architects Ltd. - Co Londonderry - Londonderry
- A T G Services (Ireland) Ltd - Co Londonderry - Coleraine
- A1 Coach Travel Ltd - Co Londonderry - Londonderry
- Ab Computers - Co Londonderry - Londonderry
- Abbey Rewind - Co Londonderry - Coleraine
- Acorn It Computers Ltd - Co Londonderry - Maghera
- Active Maintenance Solutions Ltd - Co Londonderry - Londonderry
- Advanced Cash Control Systems - Co Londonderry - Maghera
- Af Joinery Ltd. - Co Londonderry - Limavady
- Aghadowey Creamery Ltd - Co Londonderry - Coleraine
- Agrapork - Co Londonderry - Magherafelt
- Agri-Fab Engineering - Co Londonderry - Magherafelt
- Agrispares (N I) Ltd. - Co Londonderry - Londonderry
- Air Cool Engineering (NI) Ltd - Co Londonderry - Limavady
- Alan McGarrigle Signs - Co Londonderry - Londonderry
- Alan Thompson Partnership Ltd. - Co Londonderry - Coleraine
- Alastair's Home Bakery - Co Londonderry - Magherafelt
- All Pipe Engineering Ltd. - Co Londonderry - Londonderry
- Allersafe Ltd - Co Londonderry - Coleraine
- Alpha Stained Glass - Co Londonderry - Londonderry
- Alphatec Wiring Systems - Co Londonderry - Londonderry
- Anderson Banners - Co Londonderry - Coleraine
- Anthony O'Neill - Co Londonderry - Magherafelt
- Aquaholics - Co Londonderry - Portstewart
- Archie O'Kane - Co Londonderry - Maghera
- Ardmore (Co. Derry) Pre-Cast Concrete Ltd. - Co Londonderry - Londonderry
- Armour Trailers & Engineering - Co Londonderry - Magherafelt
- Armstrong Joinery & Timber Merchants Ltd - Co Londonderry - Coleraine
- Armstrong Medical Ltd. - Co Londonderry - Coleraine
- Art Glass - Co Londonderry - Londonderry
- Ashland Chemicals & Hygiene Supplies Ltd. - Co Londonderry - Limavady
- Asmuis Bradley - Co Londonderry - Coleraine
- B Mullan & Sons (Contractors) Ltd. - Co Londonderry - Limavady
- B Mullan & Sons (Pre-Mix Concrete) Ltd (Londonderry) - Co Londonderry - Londonderry
- B H P Alarms Ltd. - Co Londonderry - Londonderry
- B M C Construction - Co Londonderry - Londonderry
- B M Groundworks Ltd. - Co Londonderry - Londonderry
- B M K Steel Ltd - Co Londonderry - Magherafelt
- B P McKeefry Ltd - Co Londonderry - Maghera
- Baird Chemists (Coleraine) - Co Londonderry - Coleraine
- Balmoral Shirts - Co Londonderry - Londonderry
- Bann Building Co - Co Londonderry - Coleraine
- Bann Engineering Co. Ltd. - Co Londonderry - Coleraine
- Bap Express - Co Londonderry - Londonderry
- Bap Express Foodservice Ltd - Co Londonderry - Londonderry
- Bearna Solutions Ltd - Co Londonderry - Magherafelt
- Beech-Hill Stables - Co Londonderry - Magherafelt
- Belfast Telegraph - Co Londonderry - Londonderry
- Bellacena Fuels - Co Londonderry - Limavady
- Bellarena Fuels Ltd - Co Londonderry - Limavady
- Bells of Cappagh Ltd. - Co Londonderry - Portstewart
- Bellshill Developments Ltd - Co Londonderry - Magherafelt
- Bentley Instrument Co. Ltd. - Co Londonderry - Londonderry
- Besam Automatic Doors - Co Londonderry - Londonderry
- Biznet Solutions Ltd. - Co Londonderry - Londonderry
- Blaney Gears Ltd - Co Londonderry - Limavady
- Bmc Construction Ltd. - Co Londonderry - Londonderry
- Bob Jefferson - Co Londonderry - Coleraine
- Bolton Farms - Co Londonderry - Magherafelt
- Box Displays - Co Londonderry - Limavady
- BP McKeefry Holdings Ltd - Co Londonderry - Maghera
- Brennan Associates - Co Londonderry - Londonderry
- Brennen Associates - Co Londonderry - Coleraine
- Brian Brolly - Co Londonderry - Londonderry
- Brian McNicholl - Co Londonderry - Coleraine
- Brian Scott Engineering Ltd. - Co Londonderry - Coleraine
- Bridgeline Demolotion Contractors - Co Londonderry - Limavady
- British Bakeries Ltd (Coleraine) - Co Londonderry - Coleraine
- Bulrush Horticulture Ltd. - Co Londonderry - Magherafelt
- Business Success Strategies Ltd. - Co Londonderry - Magherafelt
- C O'Neill - Co Londonderry - Maghera
- C P Hire Ltd. - Co Londonderry - Coleraine
- C & H Foods Ltd. - Co Londonderry - Londonderry
- C & J McCollum - Co Londonderry - Coleraine
- C J Monaghan & Co. - Co Londonderry - Londonderry
- C L Design Associates - Co Londonderry - Londonderry
- C M M Picture Framing Services - Co Londonderry - Coleraine
- C O'Neill Fabrications Ltd - Co Londonderry - Maghera
- C S Architectural Salvage Ltd. - Co Londonderry - Londonderry
- C-Tec Commercial Vehicle Engineering - Co Londonderry - Magherafelt
- Cable & Accessories (Northern Ireland) Ltd. - Co Londonderry - Londonderry
- Campsie Fork Lift Services - Co Londonderry - Londonderry
- Campsie Fuels Ltd - Co Londonderry - Londonderry
- Campsie Paper Co. Ltd. - Co Londonderry - Londonderry
- Canavan Associates Ltd. - Co Londonderry - Londonderry
- Cannings of Limavady (Motors) Ltd. - Co Londonderry - Limavady
- Cannings Plant Hire - Co Londonderry - Limavady
- Cappagh Homes Ltd. - Co Londonderry - Coleraine
- Carella Laminate Systems Ltd. - Co Londonderry - Londonderry
- Carey Consulting (N I) Ltd - Co Londonderry - Coleraine
- Carl Bradley - Co Londonderry - Londonderry
- Carmean Chemicals Ltd. - Co Londonderry - Magherafelt
- Carmean Limeworks Ltd - Co Londonderry - Magherafelt
- Carmoney Water Treatment Works - Co Londonderry - Londonderry
- Carn Fasteners Ltd. - Co Londonderry - Maghera
- Carnroe Supplies Ltd - Co Londonderry - Coleraine
- Carntogher Community Development Association - Co Londonderry - Maghera
- Caroline C Dickson - Co Londonderry - Londonderry
- Cartridge World (Coleraine) - Co Londonderry - Coleraine
- Castlerock Golf Club - Co Londonderry - Coleraine
- Causeway Coast Stables - Co Londonderry - Coleraine
- Causeway Computer Services - Co Londonderry - Coleraine
- Causeway Data Communications Ltd. - Co Londonderry - Coleraine
- Causeway Mobility Centre - Co Londonderry - Coleraine
- Causeway Upholstery - Co Londonderry - Coleraine
- Ceeps - Co Londonderry - Coleraine
- Charles Currie - Co Londonderry - Londonderry
- Charles Faulkner & Sons - Co Londonderry - Coleraine
- Charlie O'Neill Agricultural - Co Londonderry - Maghera
- Chris McClintock Stained Glass - Co Londonderry - Coleraine
- Christies Ltd. - Co Londonderry - Coleraine
- City Boiler Services - Co Londonderry - Londonderry
- City Centre Initiative Ltd - Co Londonderry - Londonderry
- City Contract Cleaners Ltd. - Co Londonderry - Londonderry
- City Electrical Factors (Londonderry) - Co Londonderry - Londonderry
- City Electrical Factors Ltd (Coleraine) - Co Londonderry - Coleraine
- City Home Bakery - Co Londonderry - Londonderry
- City Roofing & Asphalt Services Ltd. - Co Londonderry - Londonderry
- Classic Walls Ltd - Co Londonderry - Ballymena
- Classical Mouldings - Co Londonderry - Londonderry
- Claudy - Co Londonderry - Londonderry
- Clifford Wholesale - Co Londonderry - Londonderry
- Clooney Meats - Co Londonderry - Londonderry
- Cohesion - Co Londonderry - Limavady
- Coleraine Fireplaces Ltd - Co Londonderry - Coleraine
- Coleraine Fuel Centre - Co Londonderry - Coleraine
- Coleraine Skip Hire & Recycling Ltd - Co Londonderry - Coleraine
- Colour Copy Services - Co Londonderry - Magherafelt
- Computer Accounting Bureau - Co Londonderry - Coleraine
- Concrete Velvet - Co Londonderry - Londonderry
- Connect Mobile Solutions - Co Londonderry - Maghera
- Consarc - Co Londonderry - Londonderry
- Construction Solutions (N I) Ltd. - Co Londonderry - Maghera
- Contractors Insurance Guarantee Services (Ni) Ltd. - Co Londonderry - Coleraine
- Coolhaven Developments Ltd. - Co Londonderry - Magherafelt
- Coolkeeragh Esb Ltd. - Co Londonderry - Londonderry
- Corem Engineering Ltd. - Co Londonderry - Londonderry
- Corramore Construction Ltd. - Co Londonderry - Magherafelt
- Corus Steel Service - Co Londonderry - Londonderry
- Country Cuisine (N I ) Ltd. - Co Londonderry - Magherafelt
- Countrywide Signs (Ni) North West Ltd. - Co Londonderry - Coleraine
- Cov-Tek Security Systems Ltd. - Co Londonderry - Coleraine
- Covehill Homes - Co Londonderry - Coleraine
- Cowan Brothers - Co Londonderry - Londonderry
- CP Hire - Co Londonderry - Magherafelt
- Cpc Office Supplies Ltd. - Co Londonderry - Londonderry
- Craig Fuels - Co Londonderry - Londonderry
- Crawford Field Sports - Co Londonderry - Maghera
- Crawford Robert - Co Londonderry - Coleraine
- Creevagh Construction Ltd - Co Londonderry - Londonderry
- Crillys Wallpaper & Paints - Co Londonderry - Maghera
- Cromore Builders - Co Londonderry - Coleraine
- Cross Quays Engineering Ltd. - Co Londonderry - Londonderry
- Crossland Tankers Ltd. - Co Londonderry - Maghera
- Culmore Square Management Co. Ltd - Co Londonderry - Londonderry
- Cunningham Covers Ltd. - Co Londonderry - Maghera
- Currie Engineering - Co Londonderry - Coleraine
- D J Lockhart Ltd. - Co Londonderry - Coleraine
- D & C Forklifts - Co Londonderry - Coleraine
- D & D Foodservices - Co Londonderry - Londonderry
- D & M Farm Services Ltd. - Co Londonderry - Londonderry
- D A Quigley & Sons - Co Londonderry - Londonderry
- D Burrows - Co Londonderry - Magherafelt
- D F A - Co Londonderry - Londonderry
- D Hyndman & Son (Bakers) Ltd. - Co Londonderry - Maghera
- D K Creelman - Co Londonderry - Coleraine
- D M Kearney Design - Co Londonderry - Maghera
- D Maxwell - Co Londonderry - Maghera
- D V Ferry Building Services Ltd - Co Londonderry - Londonderry
- D Watters - Co Londonderry - Magherafelt
- D.T.M. Consultants - Co Londonderry - Londonderry
- Dairy Produce Packers Ltd. - Co Londonderry - Coleraine
- Dalzell & Campbell - Co Londonderry - Coleraine
- Daniel H Starrett - Co Londonderry - Coleraine
- Darry Duff Farm - Co Londonderry - Londonderry
- David L McCollum - Co Londonderry - Coleraine
- David McCollum - Co Londonderry - Coleraine
- David Moore - Co Londonderry - Londonderry
- David Sloan - Co Londonderry - Coleraine
- Day Break Recordings - Co Londonderry - Magherafelt
- De Zeeuw J Raymond Ar I C S - Co Londonderry - Coleraine
- Deacon Fuels - Co Londonderry - Limavady
- Deeny's - Co Londonderry - Londonderry
- Deerpark Pedigree Pigs - Co Londonderry - Magherafelt
- Deighan Fuel Oils - Co Londonderry - Limavady
- Delwyn Enterprises Ltd. - Co Londonderry - Magherafelt
- Dempseys of Portstewart Ltd. - Co Londonderry - Portstewart
- Denny Henry & Sons (N.I.) - Co Londonderry - Londonderry
- Department of Employment & Learning (Magherafelt) - Co Londonderry - Magherafelt
- Derek Smyth - Co Londonderry - Coleraine
- Derry Building Supplies Ltd. - Co Londonderry - Londonderry
- Derry Youth & Community Workshop - Co Londonderry - Londonderry
- Desmond E Bell - Co Londonderry - Magherafelt
- Diamond & Hughes Architecture - Co Londonderry - Maghera
- Diamond Construction - Co Londonderry - Magherafelt
- Diamond Corrugated Cases Ltd. - Co Londonderry - Londonderry
- Diamond Glass (Ni) Ltd - Co Londonderry - Maghera
- Diesel Card International Ltd. - Co Londonderry - Londonderry
- Dispo Products Ltd - Co Londonderry - Londonderry
- Ditty's (Home Bakery) Ltd - Co Londonderry - Magherafelt
- Dittys Home Bakery - Co Londonderry - Magherafelt
- Don Laughlin & Co. Ltd - Co Londonderry - Londonderry
- Draperstown Ornamental Ballusprades - Co Londonderry - Magherafelt
- Drenagh Sawmills Ltd. - Co Londonderry - Limavady
- Drennan Transport Ltd. - Co Londonderry - Maghera
- Drew O'Kane & Sons Ltd - Co Londonderry - Maghera
- Driver Hire (Foyle) - Co Londonderry - Londonderry
- Driver Hire Coleraine - Co Londonderry - Coleraine
- Drumanee Construction Co. Ltd - Co Londonderry - Magherafelt
- Drumenagh Woden Products - Co Londonderry - Magherafelt
- Dulux Decorating Centre (Londonderry) - Co Londonderry - Londonderry
- Dunderg Building Supplies Ltd - Co Londonderry - Coleraine
- Dunergan Developments Ltd. - Co Londonderry - Magherafelt
- Dunlop & Hamilton (Coleraine) - Co Londonderry - Coleraine
- E & R Wallace - Co Londonderry - Coleraine
- E C Nicholl - Co Londonderry - Magherafelt
- E Doherty & Sons - Co Londonderry - Londonderry
- E G Mitchell - Co Londonderry - Londonderry
- E H Allingham - Co Londonderry - Londonderry
- E H Allingham Construction Ltd - Co Londonderry - Londonderry
- E L S S Engineering Ltd - Co Londonderry - Limavady
- E Lynch - Co Londonderry - Portstewart
- E P H Supplies Ltd - Co Londonderry - Limavady
- E S L Engineering Ltd. - Co Londonderry - Coleraine
- Easiware - Co Londonderry - Londonderry
- Eason & Son (N I) Ltd. - Co Londonderry - Londonderry
- Eclipse Computer Consultancy - Co Londonderry - Magherafelt
- Eden Dry Lining Ltd. - Co Londonderry - Londonderry
- Edward Doherty - Co Londonderry - Londonderry
- Edward Kerr - Co Londonderry - Londonderry
- Eglinton (Timber Products) Ltd. - Co Londonderry - Londonderry
- Eglinton Construction - Co Londonderry - Londonderry
- Eglinton D I Y Ltd - Co Londonderry - Londonderry
- Electronic Outlets - Co Londonderry - Magherafelt
- Elegance Interiors - Co Londonderry - Coleraine
- Ennis Bros - Co Londonderry - Londonderry
- Essential Room Solutions - Co Londonderry - Magherafelt
- Euro Control Panel Specialists Ltd. - Co Londonderry - Londonderry
- Europa Foods Distribution Ltd - Co Londonderry - Coleraine
- Exclusiv Fitted Interiors - Co Londonderry - Londonderry
- F D Developments Ltd - Co Londonderry - Londonderry
- F Doherty - Co Londonderry - Coleraine
- Fabric World Group - Co Londonderry - Londonderry
- Factory Automation Sysems Technologies Ltd. - Co Londonderry - Londonderry
- Farm Hydraulics - Co Londonderry - Coleraine
- Farming & Wildlife Advisory Group Ltd. - Co Londonderry - Magherafelt
- Farrell Products Ltd. - Co Londonderry - Magherafelt
- Feeny Post Office - Co Londonderry - Londonderry
- Fermac Properties - Co Londonderry - Londonderry
- Fernwave (Civils) Ltd. - Co Londonderry - Londonderry
- Fiesta Blinds - Co Londonderry - Londonderry
- Fiesta Blinds & Fabrics Ltd. - Co Londonderry - Londonderry
- Fire Glass Direct Ireland Ltd. - Co Londonderry - Magherafelt
- Firecare Ltd. - Co Londonderry - Limavady
- First Choice Selection Services Ltd (Coleraine) - Co Londonderry - Coleraine
- FIRST4HAMPERS - Co Londonderry - Coleraine
- FIRST4HAMPERS (Coleraine) - Co Londonderry - Coleraine
- FIRST4PRINTING - Co Londonderry - Coleraine
- Fleming Agri-Products Ltd. - Co Londonderry - Londonderry
- Flite Software (N I ) Ltd - Co Londonderry - Londonderry
- Forth & Foyle (Ni) Ltd. - Co Londonderry - Londonderry
- Four Dee (Ni) Ltd - Co Londonderry - Magherafelt
- Foyle Blinds Co - Co Londonderry - Londonderry
- Foyle Blinds Ltd. - Co Londonderry - Londonderry
- Foyle Chipping Co. - Co Londonderry - Londonderry
- Foyle Electrics (Wholesale) Ltd - Co Londonderry - Londonderry
- Foyle Freight - Co Londonderry - Londonderry
- Foyle Meats - Co Londonderry - Londonderry
- Foyle Skip Hire - Co Londonderry - Londonderry
- Foyle View Builders Ltd. - Co Londonderry - Londonderry
- Foyleside Plumbing Supplies - Co Londonderry - Londonderry
- Foylevent Fabrications Ltd. - Co Londonderry - Londonderry
- Fragrance House - Co Londonderry - Magherafelt
- Fred Jones - Co Londonderry - Londonderry
- Fred Stewart - Co Londonderry - Limavady
- Fuel Preparations (International) Ltd. - Co Londonderry - Londonderry
- Fugro-Bks Ltd. - Co Londonderry - Coleraine
- Future Fitness Systems Ltd. - Co Londonderry - Londonderry
- Fyth Ltd. - Co Londonderry - Londonderry
- G & A Caldwell - Co Londonderry - Magherafelt
- G & G Warnock - Co Londonderry - Londonderry
- G A Parke & Sons Ltd. - Co Londonderry - Londonderry
- G J O'Kane - Co Londonderry - Coleraine
- G K McIlroy - Co Londonderry - Coleraine
- G M Design Associates Ltd - Co Londonderry - Coleraine
- G McNickle - Co Londonderry - Londonderry
- G Nesbitt & Sons - Co Londonderry - Londonderry
- G T Precision N I Ltd. - Co Londonderry - Coleraine
- G T Precision (N I) Ltd. - Co Londonderry - Coleraine
- G&G Fixings & Plant Sales Diamonds Fixings Tools - Co Londonderry - Magherafelt
- Gallagher & Mc Kinney Ltd. - Co Londonderry - Londonderry
- Gareth Francis Interiors Ltd - Co Londonderry - Limavady
- Garvagh Blinds - Co Londonderry - Coleraine
- Garvagh Precision Engineering - Co Londonderry - Coleraine
- Gary Crothers - Co Londonderry - Londonderry
- Ge Kee - Co Londonderry - Coleraine
- George Campbell - Co Londonderry - Coleraine
- George Foster Construction Ltd. - Co Londonderry - Londonderry
- George Long Associates Llp - Co Londonderry - Londonderry
- George McLaughlin Construction - Co Londonderry - Coleraine
- Gibson Plant Hire - Co Londonderry - Londonderry
- Gilbert Crawford Farms - Co Londonderry - Maghera
- Gillen Fuels Ltd - Co Londonderry - Londonderry
- Ginnis Properties Ltd. - Co Londonderry - Limavady
- Glenpark Environmental Services Ltd. - Co Londonderry - Londonderry
- Glenshane Partitions & Glass - Co Londonderry - Magherafelt
- Glenview Trophies Ltd. - Co Londonderry - Maghera
- Glm Joinery - Co Londonderry - Limavady
- Global C P D Com Ltd - Co Londonderry - Magherafelt
- Glovers Crane Hire Ltd. - Co Londonderry - Magherafelt
- Go Mobile - Co Londonderry - Magherafelt
- Granaghan Contracts Ltd. - Co Londonderry - Maghera
- Graphix Signs-Screen Printing - Co Londonderry - Londonderry
- Gregory Donnelly - Co Londonderry - Londonderry
- Greystone Builders Ltd. - Co Londonderry - Limavady
- Gribbin Construction Ltd. - Co Londonderry - Magherafelt
- Guildhall Press - Co Londonderry - Londonderry
- Gum-Rap - Co Londonderry - Londonderry
- H and T Bellas Ltd - Co Londonderry - Coleraine
- H Crowe & Son - Co Londonderry - Coleraine
- H M D Architects Ltd - Co Londonderry - Londonderry
- H M Electrics Ltd. - Co Londonderry - Maghera
- H McGuskin & Sons - Co Londonderry - Magherafelt
- H P O'Kane - Co Londonderry - Coleraine
- H S Alcorn - Co Londonderry - Limavady
- H S Fixings - Co Londonderry - Londonderry
- Han Ley Crane Hire Ltd - Co Londonderry - Limavady
- Hancock Fuels - Co Londonderry - Magherafelt
- Harte & Eakin (Contractors) Ltd. - Co Londonderry - Coleraine
- Haslett Monumental Sculptors - Co Londonderry - Londonderry
- Hasson Concrete - Co Londonderry - Londonderry
- Hasson Engineering - Co Londonderry - Londonderry
- Hatrick Bros - Co Londonderry - Magherafelt
- Haven Haulage - Co Londonderry - Magherafelt
- He Diamond Fish & Burger Bar - Co Londonderry - Magherafelt
- Health Systems - Co Londonderry - Magherafelt
- Hegarty Architects - Co Londonderry - Londonderry
- Hegarty Butchers - Co Londonderry - Londonderry
- Henderson Music Ltd. - Co Londonderry - Londonderry
- Henry A & Philip Palmer - Co Londonderry - Magherafelt
- Henry Allen - Co Londonderry - Magherafelt
- Henry B McNulty - Co Londonderry - Londonderry
- Henry Brothers (Magherafelt) Ltd. - Co Londonderry - Magherafelt
- Heron Bros Ltd. - Co Londonderry - Magherafelt
- Hidden Hearing (Coleraine) - Co Londonderry - Coleraine
- Higgins Engineering - Co Londonderry - Magherafelt
- Hillcrest Supplies - Co Londonderry - Magherafelt
- Hire-A-Loo Ltd. - Co Londonderry - Londonderry
- Hivolt Capacitors Ltd. - Co Londonderry - Londonderry
- Holmes Cash & Carry (Coleraine) - Co Londonderry - Coleraine
- Homes Pubs & Clubs (Coleraine) - Co Londonderry - Coleraine
- House & Home - Co Londonderry - Londonderry
- Huco Lightronic N I Ltd. - Co Londonderry - Limavady
- Hugh C Conn - Co Londonderry - Coleraine
- Hugh C Tannahill - Co Londonderry - Coleraine
- Hugh Henry - Co Londonderry - Londonderry
- Hugh McCollum - Co Londonderry - Limavady
- Hughes Furniture Ltd. - Co Londonderry - Magherafelt
- Hughes James Architects - Co Londonderry - Maghera
- Hunter Apparel Solutions Ltd. - Co Londonderry - Londonderry
- Hygiene & Sanitation Care - Co Londonderry - Maghera
- I Cooper - Co Londonderry - Londonderry
- I J G Machines - Co Londonderry - Portstewart
- Ian Black - Co Londonderry - Coleraine
- Image Branding Ltd. - Co Londonderry - Londonderry
- Impact Printing of Coleraine Ltd. - Co Londonderry - Coleraine
- Independant Fertilisers - Co Londonderry - Londonderry
- Indicators International Ltd. - Co Londonderry - Magherafelt
- Info Plus Centre (Londonderry) - Co Londonderry - Londonderry
- Instant Mix Concrete - Co Londonderry - Coleraine
- Interior Dreams At Castle Furnishings Ltd - Co Londonderry - Londonderry
- Invista Textiles (U K ) - Co Londonderry - Londonderry
- Ironstone Construction Ltd. - Co Londonderry - Portstewart
- Irony - Co Londonderry - Magherafelt
- Island Engineering - Co Londonderry - Magherafelt
- Ivan A Loughlin - Co Londonderry - Londonderry
- Ivan McMullin - Co Londonderry - Coleraine
- J Blair - Co Londonderry - Coleraine
- J Kennedy & Co. (Contractors) Ltd. - Co Londonderry - Coleraine
- J & A Fuels - Co Londonderry - Londonderry
- J & T Topping - Co Londonderry - Coleraine
- J A Humphrey Ltd. - Co Londonderry - Coleraine
- J Bradley - Co Londonderry - Coleraine
- J Bradley & Sons - Co Londonderry - Coleraine
- J C A Developments Ltd - Co Londonderry - Londonderry
- J C Smyth - Co Londonderry - Coleraine
- J Dickson - Co Londonderry - Magherafelt
- J H & J J Evans - Co Londonderry - Magherafelt
- J J Kelly - Co Londonderry - Londonderry
- J M S Engineering - Co Londonderry - Coleraine
- J M Services - Co Londonderry - Coleraine
- J McCombe & Co. - Co Londonderry - Coleraine
- J McPherson - Co Londonderry - Coleraine
- J R Bedi & Sons - Co Londonderry - Magherafelt
- J Rock - Co Londonderry - Coleraine
- J S & I B Cartwright - Co Londonderry - Limavady
- J S E Computing Ltd - Co Londonderry - Londonderry
- J S Millar - Co Londonderry - Coleraine
- J T McCauley - Co Londonderry - Londonderry
- J T Quinn - Co Londonderry - Maghera
- J Whyte Bearings - Co Londonderry - Coleraine
- J Wilson Agricultural Ltd. - Co Londonderry - Coleraine
- Jacobs Builder Centre - Co Londonderry - Coleraine
- James Doherty (Meats) Ltd. - Co Londonderry - Londonderry
- James McGeehan & Sons Transport Ltd. - Co Londonderry - Magherafelt
- James Sammon & Co. - Co Londonderry - Londonderry
- James Sammon & Co. Ltd. - Co Londonderry - Londonderry
- James T O'Neill - Co Londonderry - Londonderry
- James Tierney Construction Ltd. - Co Londonderry - Limavady
- James Walsh - Co Londonderry - Maghera
- Jean Dunlop - Co Londonderry - Londonderry
- Jeff W Wilson - Co Londonderry - Coleraine
- Jessops (Londonderry) - Co Londonderry - Londonderry
- Jg's Bar Ltd - Co Londonderry - Londonderry
- Jim Pollock - Co Londonderry - Coleraine
- John Cuthbert - Co Londonderry - Londonderry
- John A Kealey - Co Londonderry - Londonderry
- John Convery - Co Londonderry - Coleraine
- John Doherty & Sons - Co Londonderry - Londonderry
- John Duncan McMonagle - Co Londonderry - Londonderry
- John Elliot - Co Londonderry - Londonderry
- John Gillen - Co Londonderry - Londonderry
- John J Higgins (Magherafelt) Ltd. - Co Londonderry - Magherafelt
- John Johnston - Co Londonderry - Magherafelt
- John Kane & Co. - Co Londonderry - Magherafelt
- John Kelly Construction - Co Londonderry - Limavady
- John Kelly Ltd (Coleraine) - Co Londonderry - Coleraine
- John M Connell - Co Londonderry - Londonderry
- John R Loughery - Co Londonderry - Limavady
- John Rainey and Co - Co Londonderry - Coleraine
- John Thompson & Sons (Coleraine) - Co Londonderry - Coleraine
- Johnson Produce Ltd - Co Londonderry - Londonderry
- Johnstone's Leyland (Coleraine) - Co Londonderry - Coleraine
- Joseph Mulheron - Co Londonderry - Londonderry
- Jpm Contracts Ltd. - Co Londonderry - Londonderry
- June S Cash Stores - Co Londonderry - Maghera
- Just Tiles - Co Londonderry - Coleraine
- K B B Doors Ltd. - Co Londonderry - Magherafelt
- K G Harkin - Co Londonderry - Londonderry
- K Kerr Agricultural Engineers - Co Londonderry - Magherafelt
- K McDuff & Co. Ltd. - Co Londonderry - Londonderry
- K Plcontracts Ltd. - Co Londonderry - Londonderry
- K W Surveyors - Co Londonderry - Londonderry
- K-Scroll Ltd - Co Londonderry - Magherafelt
- Kearns & Co. Ltd - Co Londonderry - Londonderry
- Kelly Fuels (Coleraine) - Co Londonderry - Coleraine
- Kenncore Developments Ltd. - Co Londonderry - Coleraine
- Kercon Construction Ltd. - Co Londonderry - Londonderry
- Kestrel Thermo-Plastics Ltd - Co Londonderry - Coleraine
- Kevin McClelland Architects Ltd. - Co Londonderry - Portstewart
- Kevmar Precision Engineering (N I ) Ltd - Co Londonderry - Londonderry
- Keyes - Co Londonderry - Magherafelt
- Kingfisher Environmental - Co Londonderry - Londonderry
- Kpd Solutions Ltd - Co Londonderry - Londonderry
- Kriterion Conservation Architects - Co Londonderry - Londonderry
- Kylen Ltd. - Co Londonderry - Magherafelt
- L A Wholesale - Co Londonderry - Coleraine
- La Paints - Co Londonderry - Limavady
- Labour Relations Agency - Co Londonderry - Londonderry
- Lafferty Plant Sales Ltd - Co Londonderry - Londonderry
- Lagan 106 Ltd - Co Londonderry - Coleraine
- Lamont Fireplaces Ltd - Co Londonderry - Coleraine
- Lamont Stone Products (Coleraine) - Co Londonderry - Coleraine
- Landslide Engineering Ltd. - Co Londonderry - Magherafelt
- Laughlin Farms - Co Londonderry - Coleraine
- Lean & Easy Ltd. - Co Londonderry - Coleraine
- Leckpatrick Oils Ltd - Co Londonderry - Londonderry
- Lenamore Car Breakers - Co Londonderry - Londonderry
- Leslie J Morrell - Co Londonderry - Coleraine
- Lestas Consulting - Co Londonderry - Coleraine
- Liberty Tours (Ni) Ltd. - Co Londonderry - Londonderry
- Life Tree - Co Londonderry - Londonderry
- Light & Sound F X - Co Londonderry - Coleraine
- Limavady Building Suppliers Ltd - Co Londonderry - Limavady
- Limavady Concrete - Co Londonderry - Limavady
- Limavady Printing Co. Ltd. - Co Londonderry - Limavady
- Limport Developments - Co Londonderry - Limavady
- Lindsay's Protective Clothing & Footwear - Co Londonderry - Coleraine
- Linton Selfridge - Co Londonderry - Maghera
- Lmf (North-West) Ltd. - Co Londonderry - Londonderry
- Londonderry Chamber of Commerce - Co Londonderry - Londonderry
- Loughinsholin Fisheries - Co Londonderry - Coleraine
- Lowdens Building Supplies - Co Londonderry - Londonderry
- Lucid Interactive Ltd - Co Londonderry - Londonderry
- Lyle Reid - Co Londonderry - Coleraine
- Lynas Frozen Foods - Co Londonderry - Coleraine
- Lynches Farm Shop - Co Londonderry - Londonderry
- M & L Contracts - Co Londonderry - Londonderry
- M & M Kitchen Appliances - Co Londonderry - Coleraine
- M C 2 Architects Ltd. - Co Londonderry - Magherafelt
- M C D Graphics - Co Londonderry - Londonderry
- M F L O Ltd - Co Londonderry - Coleraine
- M J Bell - Co Londonderry - Magherafelt
- M K A Planning Ltd - Co Londonderry - Londonderry
- M Kelly Construction - Co Londonderry - Londonderry
- M McKay - Co Londonderry - Coleraine
- M N M - Co Londonderry - Coleraine
- M O L Tools & Abrasives Ltd - Co Londonderry - Maghera
- M P McElhinney & Sons - Co Londonderry - Londonderry
- M Robinson & Son - Co Londonderry - Londonderry
- M Shiels - Co Londonderry - Maghera
- M T M Trading Ltd - Co Londonderry - Coleraine
- M.P.A Recruitment - Co Londonderry - Coleraine
- MacGen Power Generation Ltd - Co Londonderry - Londonderry
- Macs Cuisine - Co Londonderry - Coleraine
- Macs Fruit & Veg - Co Londonderry - Coleraine
- Macsport Maintenance Ltd. - Co Londonderry - Magherafelt
- Maghera Decorative Panels - Co Londonderry - Maghera
- Magherafelt Joinery - Co Londonderry - Magherafelt
- Manor Architects Ltd. - Co Londonderry - Magherafelt
- Manor Mouldings (N I ) Ltd. - Co Londonderry - Londonderry
- Marc-Five Ltd. - Co Londonderry - Londonderry
- Marcus M Gault - Co Londonderry - Limavady
- Marcus Orr - Co Londonderry - Londonderry
- Marcus Smyth - Co Londonderry - Coleraine
- Mark 1 Agencies Ltd - Co Londonderry - Londonderry
- Martin Food Equipment (Northern Ireland) Ltd. - Co Londonderry - Londonderry
- Mastercraft Construction Associates Ltd. - Co Londonderry - Londonderry
- Maydown Ebrington Group Ltd. - Co Londonderry - Londonderry
- Maydown Precision Engineering Ltd. - Co Londonderry - Londonderry
- Mc Garrigle + Jackson Ltd - Co Londonderry - Londonderry
- McBride Contracts Ltd - Co Londonderry - Coleraine
- McCann Refrigeration & Air Conditioning Ltd. - Co Londonderry - Londonderry
- McCluskey Pottery - Co Londonderry - Limavady
- McCollum (Drumcroon) Ltd. - Co Londonderry - Coleraine
- McDevitt Electrical Services - Co Londonderry - Limavady
- McErlain's Bakery (Magherfelt) Ltd. - Co Londonderry - Magherafelt
- McErlean Trailers Ltd. - Co Londonderry - Magherafelt
- McGarry-Moon Architects Ltd. - Co Londonderry - Coleraine
- McGirr Architects - Co Londonderry - Londonderry
- McGirr Architects Ltd - Co Londonderry - Magherafelt
- McGuckin & Scott - Co Londonderry - Londonderry
- McGurk Chartered Architects - Co Londonderry - Magherafelt
- McIvor Plastics Ltd. - Co Londonderry - Londonderry
- McKee's - Co Londonderry - Maghera
- McKendry Fabrications - Co Londonderry - Coleraine
- McLaughlin Fitted Furniture - Co Londonderry - Londonderry
- McLean Fuels Ltd. - Co Londonderry - Magherafelt
- McMenamin Plant Ltd. - Co Londonderry - Londonderry
- McMullan Architecture - Co Londonderry - Magherafelt
- McNeely Bros - Co Londonderry - Londonderry
- McNicholl Caravans Ltd. - Co Londonderry - Magherafelt
- Meadowfield Development Ltd - Co Londonderry - Coleraine
- Mediglaze Ltd - Co Londonderry - Magherafelt
- Mervyn Crean Building & Joinery Ltd - Co Londonderry - Coleraine
- Messrs Walsh - Co Londonderry - Magherafelt
- Micran Ltd. - Co Londonderry - Magherafelt
- Micro-Flexitronics Ltd. - Co Londonderry - Coleraine
- Mid-Ulster Q.S. Services - Co Londonderry - Magherafelt
- Milgro Ltd - Co Londonderry - Limavady
- Millar Livestock - Co Londonderry - Coleraine
- Millar Savoury Foods Ltd. - Co Londonderry - Londonderry
- Millar Tractors Ltd. - Co Londonderry - Coleraine
- Millennium International Travel - Co Londonderry - Magherafelt
- MIM (ni) Ltd - Co Londonderry - Londonderry
- Minstrel Engineering Ltd - Co Londonderry - Magherafelt
- Mona Units Ltd - Co Londonderry - Londonderry
- Money Carrie Engineering Ltd. - Co Londonderry - Coleraine
- Moneymore Manufacturing Co. Ltd. - Co Londonderry - Magherafelt
- Moneymore Supplies - Co Londonderry - Magherafelt
- Montgomery Irwin Architects Ltd. - Co Londonderry - Coleraine
- Moore Construction - Co Londonderry - Londonderry
- Moore Design - Co Londonderry - Coleraine
- Moore Fuels - Co Londonderry - Londonderry
- Moore's Fuels - Co Londonderry - Londonderry
- Morelli Ice Cream - Co Londonderry - Coleraine
- Morrell McCollum - Co Londonderry - Coleraine
- Moss Tiles Ltd. - Co Londonderry - Magherafelt
- Moyle Trading Co. Ltd - Co Londonderry - Londonderry
- Moyola Mattress Co. Ltd. - Co Londonderry - Magherafelt
- Moyola Precision Engineering Ltd. - Co Londonderry - Magherafelt
- Mpa Recruitment Ltd. - Co Londonderry - Londonderry
- Mulderg House Farm - Co Londonderry - Londonderry
- Mullins Ice Cream Ltd. - Co Londonderry - Coleraine
- Murdocks (Derry) Ltd. - Co Londonderry - Londonderry
- Murphy Joinery - Co Londonderry - Magherafelt
- Murray Tiles of Patrick Street Ltd. - Co Londonderry - Londonderry
- My-Com Computers - Co Londonderry - Limavady
- N McLoone & Co. Ltd - Co Londonderry - Londonderry
- Neff & Co Architects & Planning Supervisors - Co Londonderry - Londonderry
- Neil Donaghy - Co Londonderry - Londonderry
- New Look Furniture - Co Londonderry - Maghera
- Newline Consultancy Services Ltd. - Co Londonderry - Londonderry
- Newpark Security Ltd - Co Londonderry - Magherafelt
- Newtownstewart Construction Ltd. - Co Londonderry - Londonderry
- Ni Safes Direct Com - Co Londonderry - Limavady
- Nicholl (Fuel Oils) Ltd. - Co Londonderry - Londonderry
- Nigel Booth - Co Londonderry - Magherafelt
- Nmor-Den Electrical - Co Londonderry - Londonderry
- Noones of Maghera - Co Londonderry - Maghera
- Noribic Ltd. - Co Londonderry - Londonderry
- Norman O'Neill - Co Londonderry - Coleraine
- Norman A Brown - Co Londonderry - Magherafelt
- Norman McIlroy - Co Londonderry - Coleraine
- North West Car Breakers - Co Londonderry - Londonderry
- North West Catering Equipment Ltd - Co Londonderry - Londonderry
- North West Gas - Co Londonderry - Londonderry
- North West Joinery - Co Londonderry - Londonderry
- North West Locksmiths - Co Londonderry - Limavady
- North West Office Services - Co Londonderry - Londonderry
- North West Pork Products - Co Londonderry - Londonderry
- North West Wood Turning - Co Londonderry - Londonderry
- Northern Ceramics (Limavady) Ltd - Co Londonderry - Limavady
- Northern Ireland Union of Supported Employment - Co Londonderry - Londonderry
- Northwest Seeds - Co Londonderry - Londonderry
- Nu Print Technologies Ltd. - Co Londonderry - Londonderry
- O'Doherty Bros Ltd. - Co Londonderry - Londonderry
- O'Kane - Co Londonderry - Coleraine
- O'Kane & Devine Construction Ltd. - Co Londonderry - Londonderry
- O'Kane & McLaughlin (Builders) Ltd. - Co Londonderry - Londonderry
- O'Kane Bros - Co Londonderry - Londonderry
- O'Kane Fuels - Co Londonderry - Magherafelt
- O'Neill Bros (Building Contractors) Ltd. - Co Londonderry - Londonderry
- Oakmount Outdoor Living - Co Londonderry - Magherafelt
- Office Equipment Centre - Co Londonderry - Magherafelt
- Old Manse Joinery - Co Londonderry - Coleraine
- Oldtown Joinery - Co Londonderry - Magherafelt
- Omega Mechanical Services Ltd. - Co Londonderry - Londonderry
- One Stop Design - Co Londonderry - Magherafelt
- Oriental Traders - Co Londonderry - Coleraine
- Orr Bros - Co Londonderry - Londonderry
- Outdoor Services - Co Londonderry - Magherafelt
- P & C Mullan (Construction) Ltd. - Co Londonderry - Coleraine
- P & J Fabrication - Co Londonderry - Londonderry
- P B Forklifts - Co Londonderry - Londonderry
- P Bradley & Co. Ltd - Co Londonderry - Coleraine
- P Eymere - Co Londonderry - Portstewart
- P Ferguson & Sons Ltd. - Co Londonderry - Londonderry
- P R O Hire Centres - Co Londonderry - Londonderry
- P Y S Property Ltd. - Co Londonderry - Maghera
- P&J Walls - Co Londonderry - Magherafelt
- Pakflatt (Uk) Ltd. - Co Londonderry - Londonderry
- Palm Beach Sunbeds - Co Londonderry - Londonderry
- Papworth Specialist Vehicles Ltd (Londonderry) - Co Londonderry - Londonderry
- Paragon Tiles Ltd. - Co Londonderry - Limavady
- Partridge Peartree Promotions Ltd. - Co Londonderry - Londonderry
- Patrick Bradley Ltd. - Co Londonderry - Coleraine
- Patrick Crumley - Co Londonderry - Londonderry
- Patrick F Corr Ltd. - Co Londonderry - Limavady
- Patrick L O'Kane - Co Londonderry - Coleraine
- Patrick O'Neill - Co Londonderry - Londonderry
- Patton Wallpapers (Coleraine) Ltd. - Co Londonderry - Coleraine
- Paul McCloskey Nurseries - Co Londonderry - Coleraine
- Peden Power Ltd. - Co Londonderry - Magherafelt
- Pennyburn A P B Lift Trucks - Co Londonderry - Londonderry
- Pentagon Sports - Co Londonderry - Magherafelt
- Perfecseal Ltd. - Co Londonderry - Londonderry
- Peter Shaw - Co Londonderry - Londonderry
- Pharmacy Supplies Ltd. - Co Londonderry - Magherafelt
- Philip Cahoon & R - Co Londonderry - Magherafelt
- Philip M Bassett Ltd (Coleraine) - Co Londonderry - Coleraine
- Pollock Smith D P - Co Londonderry - Coleraine
- Portrush Discounts - Co Londonderry - Portstewart
- Portstewart Computer Services - Co Londonderry - Portstewart
- Pottery Supplies Division - Co Londonderry - Maghera
- Premier Woodlands Ltd. - Co Londonderry - Magherafelt
- Progress Joinery - Co Londonderry - Magherafelt
- Project Engineering & Management Ltd - Co Londonderry - Limavady
- Purvis Precast Savin & Fountin Center - Co Londonderry - Magherafelt
- Purvis Stone Products Ltd. - Co Londonderry - Magherafelt
- Q Fuels - Co Londonderry - Londonderry
- Quality Framing - Co Londonderry - Coleraine
- Quinns Car Dismantlers - Co Londonderry - Maghera
- Quinnspares (N I ) Ltd - Co Londonderry - Londonderry
- R A Kyle & Sons - Co Londonderry - Maghera
- R Armstrong - Co Londonderry - Coleraine
- R B Lyttle - Co Londonderry - Coleraine
- R B R Ireland Ltd - Co Londonderry - Coleraine
- R Campbell - Co Londonderry - Maghera
- R Cochrane - Co Londonderry - Coleraine
- R Ewing - Co Londonderry - Magherafelt
- R G Craig - Co Londonderry - Londonderry
- R H Huston & Son Ltd. - Co Londonderry - Coleraine
- R H K Davidson & Co. (Coleraine) Ltd. - Co Londonderry - Coleraine
- R J & R D Buchanan - Co Londonderry - Londonderry
- R J Patterson - Co Londonderry - Coleraine
- R K L Plywood (Uk) - Co Londonderry - Londonderry
- R Martin - Co Londonderry - Coleraine
- R S Bishop & Co - Co Londonderry - Coleraine
- R W Hunter - Co Londonderry - Magherafelt
- Rafferty Roof Trusses Ltd - Co Londonderry - Coleraine
- Ramage C Joinery - Co Londonderry - Coleraine
- Rascahan Engineering - Co Londonderry - Limavady
- Reach New Media Ltd. - Co Londonderry - Coleraine
- Ready Mixed Concrete (Ulster) - Co Londonderry - Londonderry
- Regan Tile Design - Co Londonderry - Londonderry
- Reid Brothers - Co Londonderry - Londonderry
- Reilly Engineering - Co Londonderry - Limavady
- Renault Car Dismantlers - Co Londonderry - Magherafelt
- Retail Software Technology Ltd - Co Londonderry - Londonderry
- Riada Resourcing Ltd. - Co Londonderry - Coleraine
- Riddell Bros - Co Londonderry - Maghera
- Ridgeline Roofing Products - Co Londonderry - Londonderry
- Ritchie Plant Hire Ltd - Co Londonderry - Londonderry
- Rite Trailers - Co Londonderry - Magherafelt
- Robert Conn - Co Londonderry - Limavady
- Robert Keys & Co. Ltd. - Co Londonderry - Londonderry
- Robert Mitchell - Co Londonderry - Magherafelt
- Robert S Moody - Co Londonderry - Londonderry
- Robert Smith & Co. (Derry) Ltd - Co Londonderry - Londonderry
- Robinson Ferry Construction Co. Ltd - Co Londonderry - Londonderry
- Robinson Patterson Partnership - Co Londonderry - Londonderry
- Roe Engineering - Co Londonderry - Coleraine
- Roe Valley Enterprises Ltd. - Co Londonderry - Limavady
- Roe Valley Joinery - Co Londonderry - Londonderry
- Roger's Fencing Systems Ltd. - Co Londonderry - Magherafelt
- Roland Fallows - Co Londonderry - Limavady
- Roll Formed Fabrications Ltd. - Co Londonderry - Magherafelt
- Rooms Dynamic Furniture Ltd. - Co Londonderry - Coleraine
- Roy Hamilton - Co Londonderry - Londonderry
- Royal Mail - Co Londonderry - Londonderry
- Rushall Farms Ltd. - Co Londonderry - Limavady
- Russell Tiles - Co Londonderry - Londonderry
- S G Performance Ltd. - Co Londonderry - Coleraine
- S J Carmichael - Co Londonderry - Magherafelt
- S J Mitchell & Co. - Co Londonderry - Limavady
- S Morrison - Co Londonderry - Maghera
- S N Lennox - Co Londonderry - Magherafelt
- S3 Alliance Ltd - Co Londonderry - Londonderry
- Safona Rentals (Coleraine) - Co Londonderry - Coleraine
- Samuel Irwin - Co Londonderry - Coleraine
- Samuel J Sloan - Co Londonderry - Maghera
- Scott Hire (Garvagh) Ltd - Co Londonderry - Londonderry
- Sean McLaughlin Architechts - Co Londonderry - Londonderry
- Sean Mullan & Son (Builders) Ltd. - Co Londonderry - Limavady
- Season Harvest (Ni) Ltd - Co Londonderry - Londonderry
- Seating Matters - Co Londonderry - Limavady
- Setanta the Construction Co. Ltd. - Co Londonderry - Magherafelt
- Sheds & Garden Structures - Co Londonderry - Maghera
- Shell Northern Ireland (Londonderry) - Co Londonderry - Londonderry
- Singularity Ltd. - Co Londonderry - Londonderry
- SJC Hutchinson (Engineering) Ltd. - Co Londonderry - Coleraine
- Sleepmasters Ltd (Coleraine) (Coleraine) - Co Londonderry - Coleraine
- Smc Builders Ltd - Co Londonderry - Magherafelt
- Spanboard Products Ltd. - Co Londonderry - Coleraine
- Specialist Joinery Fittings Ltd. - Co Londonderry - Maghera
- Sperrin Bakery - Co Londonderry - Magherafelt
- Sperrin Developments Ltd. - Co Londonderry - Londonderry
- Sperrin Galvanisers Ltd. - Co Londonderry - Magherafelt
- Sperrin Metal Products Ltd. - Co Londonderry - Magherafelt
- Springtown Fuels - Co Londonderry - Londonderry
- SRK Equipment Co - Co Londonderry - Coleraine
- St.Brendans Irish Cream Liqueur Co. Ltd. - Co Londonderry - Londonderry
- Star Fuels (Coleraine) - Co Londonderry - Coleraine
- Star Fuels Ltd. - Co Londonderry - Coleraine
- Stephen W Bell - Co Londonderry - Magherafelt
- Stevensons Kitchens & Bedrooms Ltd. - Co Londonderry - Londonderry
- Stewart Robinson Ltd - Co Londonderry - Limavady
- Stitch in Time - Co Londonderry - Londonderry
- Strain Engineering - Co Londonderry - Magherafelt
- Stream International (N I ) Ltd. - Co Londonderry - Londonderry
- Structures 2000 Ltd - Co Londonderry - Magherafelt
- Sunesis - Co Londonderry - Londonderry
- Superseal Windows - Co Londonderry - Magherafelt
- Supertan Sunbeds - Co Londonderry - Londonderry
- Supply 999 (Londonderry) - Co Londonderry - Londonderry
- Swilly Northwest Blinds - Co Londonderry - Londonderry
- Sydney B Scott & Sons - Co Londonderry - Coleraine
- T McLaughlin & Sons Ltd. - Co Londonderry - Londonderry
- T D Walls - Co Londonderry - Coleraine
- T K Brolly Enterprises Ltd. - Co Londonderry - Londonderry
- T Neill - Co Londonderry - Coleraine
- T O'Connell & Sons - Co Londonderry - Londonderry
- T&T Frozen Foods Ltd - Co Londonderry - Londonderry
- Tanuj Chopra Agency - Co Londonderry - Coleraine
- Terry Demond - Co Londonderry - Limavady
- Texpro Ltd. - Co Londonderry - Coleraine
- The Annex Gallery - Co Londonderry - Londonderry
- The Castleroe Car Breakers - Co Londonderry - Coleraine
- The Coleraine Chronicle Co. Ltd - Co Londonderry - Coleraine
- The Dutch Furniture Workshop - Co Londonderry - Londonderry
- The Elevate Group Ltd. - Co Londonderry - Magherafelt
- The Ever-Rest Bedding - Co Londonderry - Londonderry
- The Foyle Fresh Produce Ltd - Co Londonderry - Londonderry
- The Office Furniture Centre - Co Londonderry - Londonderry
- The Perfume Shop Ltd (Londonderry) - Co Londonderry - Londonderry
- The Really Useful Design Co - Co Londonderry - Londonderry
- The Sweet Briar - Co Londonderry - Coleraine
- The Wooden Floor Store - Co Londonderry - Coleraine
- Thomas Hunter - Co Londonderry - Coleraine
- Thomas O'Kane - Co Londonderry - Londonderry
- Thompson Farm Feeds (Londonderry) - Co Londonderry - Londonderry
- Thorndale Environmental Recycling Ltd. - Co Londonderry - Londonderry
- Tile Market - Co Londonderry - Londonderry
- Tiles of Distinction - Co Londonderry - Maghera
- Tiles Plus - Co Londonderry - Coleraine
- Tiles Plus Llp - Co Londonderry - Coleraine
- Tillylumber Farm - Co Londonderry - Magherafelt
- Timberdwell Homes - Co Londonderry - Londonderry
- Tiny Tos Community Playgroup - Co Londonderry - Londonderry
- Tir-Con Engineering Ltd. - Co Londonderry - Magherafelt
- Tobermore Concrete Products Ltd. - Co Londonderry - Magherafelt
- Tobermore Paving Products Ltd - Co Londonderry - Magherafelt
- Tom Mullarkey - Co Londonderry - Londonderry
- Tonagh Electrics Ltd. - Co Londonderry - Magherafelt
- Tonagh Engineering Ltd - Co Londonderry - Magherafelt
- Tonagh Properties Ltd - Co Londonderry - Magherafelt
- Toner Fuel Oil - Co Londonderry - Coleraine
- Toner U P V C Products - Co Londonderry - Magherafelt
- Toner Windows Ltd - Co Londonderry - Magherafelt
- Top Tier Cake Design - Co Londonderry - Londonderry
- Total Engineering and Design Ltd - Co Londonderry - Londonderry
- Tracey Associates - Co Londonderry - Londonderry
- Tres Moi - Co Londonderry - Magherafelt
- Triangle Engineering Co. Ltd. - Co Londonderry - Coleraine
- Trolan Super Value - Co Londonderry - Portstewart
- Typewriter & Copier Services - Co Londonderry - Londonderry
- U-Bake Ltd. - Co Londonderry - Londonderry
- Ulster Ceramics Ltd. - Co Londonderry - Maghera
- Ulster Electro-Finishes Ltd. - Co Londonderry - Coleraine
- Ulster Systems Ltd - Co Londonderry - Londonderry
- Uni-Floors - Co Londonderry - Maghera
- Unitas Software Ltd. - Co Londonderry - Coleraine
- Universal Cleaning Supplies Ltd - Co Londonderry - Londonderry
- Upperlands Coffee Co. - Co Londonderry - Maghera
- Ussher Torrens - Co Londonderry - Coleraine
- V Ramsey - Co Londonderry - Coleraine
- V Doyle & Son Ltd. - Co Londonderry - Magherafelt
- V Semple & Sons Ltd. - Co Londonderry - Limavady
- Valley Computer Systems - Co Londonderry - Limavady
- Valley Roofing Ltd - Co Londonderry - Londonderry
- Vemac Engineering Ltd. - Co Londonderry - Londonderry
- Vertiking Services Ltd - Co Londonderry - Londonderry
- Vincent Woods - Co Londonderry - Coleraine
- Vodafone Retail Outlet (Londonderry) - Co Londonderry - Londonderry
- W & J Chambers Ltd. - Co Londonderry - Londonderry
- W & J Glenn - Co Londonderry - Coleraine
- W & M Given - Co Londonderry - Coleraine
- W D Meats - Co Londonderry - Coleraine
- W E Boggs & Sons - Co Londonderry - Londonderry
- W H Arbuthnot - Co Londonderry - Magherafelt
- W J & S D Henry - Co Londonderry - Maghera
- W J Anderson - Co Londonderry - Magherafelt
- W J Archibald - Co Londonderry - Coleraine
- W J Bolton & Son (Merchants) Ltd. - Co Londonderry - Coleraine
- W J Calderwood - Co Londonderry - Magherafelt
- W J Dickson (Builders) Ltd - Co Londonderry - Magherafelt
- W M Thompson - Co Londonderry - Limavady
- W McEvoy - Co Londonderry - Londonderry
- W Mitchell - Co Londonderry - Londonderry
- Wafer Enterprises Ltd. - Co Londonderry - Londonderry
- Ward Contracts - Co Londonderry - Magherafelt
- Ward Design - Co Londonderry - Magherafelt
- Warnock Co - Co Londonderry - Magherafelt
- Warnocks Hatchery - Co Londonderry - Maghera
- Weldtec Industrial Supplies Ltd. - Co Londonderry - Coleraine
- Wesley Gordon - Co Londonderry - Coleraine
- Wholesale Newspaper Services Ltd. - Co Londonderry - Londonderry
- William Clark and Sons Ltd - Co Londonderry - Maghera
- William Curry - Co Londonderry - Londonderry
- William Donnell Bakery Engineer - Co Londonderry - Londonderry
- William Grant and Co. Ltd. - Co Londonderry - Londonderry
- William J Archibald - Co Londonderry - Coleraine
- William J Hutchinson - Co Londonderry - Magherafelt
- William McCahon - Co Londonderry - Coleraine
- William O'Kane - Co Londonderry - Londonderry
- William Samuel Ritchie - Co Londonderry - Londonderry
- William Taylor Agricultural Equipment - Co Londonderry - Coleraine
- Wilson Steel Products - Co Londonderry - Londonderry
- Windell Ltd. - Co Londonderry - Magherafelt
- Window Blinds Direct - Co Londonderry - Coleraine
- Windyhill Farm - Co Londonderry - Limavady
- Winford Donnell - Co Londonderry - Londonderry
- Wm McLaughlin & Sons Ltd. - Co Londonderry - Limavady
- Women in Enterprise (N I ) Ltd. - Co Londonderry - Londonderry
- Woodtek Industries Ltd. - Co Londonderry - Magherafelt
- Woodvale Interiors - Co Londonderry - Londonderry
- Zenith Services N I Ltd - Co Londonderry - Londonderry
- Zing Design & Print - Co Londonderry - Coleraine