County Index - Northamptonshire
- A & N Fabrications - Northamptonshire - Northampton
- Air Systems Air Conditioning & Refrigeration Ltd. - Northamptonshire - Rushden
- Aj Jones Tipper and Grab Hire - Northamptonshire - Northampton
- Alimak Hek Ltd - Northamptonshire - Rushden
- Anglia Crane & Plant Hire Ltd. - Northamptonshire - Wellingborough
- Anthony Rickett Architects Ltd - Northamptonshire - Daventry
- Ball & Young Ltd - Northamptonshire - Corby
- Bam Plant Ltd. - Northamptonshire - Wellingborough
- Barton Plant Ltd - Northamptonshire - Kettering
- BPY Plastics Ltd - Northamptonshire - Brackley
- Brenwalk - Northamptonshire - Northampton
- C & B Engineering - Northamptonshire - Corby
- Catlin Building Services Ltd. - Northamptonshire - Kettering
- Ceramagency - Northamptonshire - Northampton
- Clean Air Installations Ltd - Northamptonshire - Daventry
- Collinswood Joinery - Northamptonshire - Corby
- Cope Antony G - Northamptonshire - Kettering
- D & M Tipper Hire - Northamptonshire - Towcester
- D & S Air Conditioning Ltd. - Northamptonshire - Northampton
- D A Bird Ltd. - Northamptonshire - Northampton
- D and M Carpentry Services Ltd - Northamptonshire - Northampton
- Door Spring Supplies Co - Northamptonshire - Wellingborough
- Dorman Long Technology Ltd - Northamptonshire - Rushden
- Drawing Office Services Ltd, The - Northamptonshire - Northampton
- E & A Plant Services Ltd. - Northamptonshire - Northampton
- Elite Selection Services - Northamptonshire - Northampton
- Emplas Window Systems Ltd. - Northamptonshire - Wellingborough
- Euro Towers Ltd - Northamptonshire - Northampton
- F W T Burrows & Co. Ltd. - Northamptonshire - Northampton
- Foxstandpipes - Northamptonshire - Daventry
- Glass Northampton Holdings Ltd. - Northamptonshire - Northampton
- Good Timber - Northamptonshire - Northampton
- Graham Churchill Plant Ltd. - Northamptonshire - Towcester
- Granite Countertops UK Marble & Granite Worktops - Northamptonshire - Northampton
- Greenbarnes Ltd - Northamptonshire - Brackley
- Grendon Design Agency Ltd - Northamptonshire - Northampton
- Grovenor Garage Doors - Northamptonshire - Daventry
- Hambleside Danelaw Ltd. - Northamptonshire - Daventry
- Hansom Premix - Northamptonshire - Brackley
- Hymo Ltd - Northamptonshire - Northampton
- Iseki Vacuum Systems Ltd - Northamptonshire - Daventry
- James King (Plant) Ltd. - Northamptonshire - Northampton
- John Innes-Gilkes Ltd. - Northamptonshire - Northampton
- K E R Plant Co-Ownership Ltd. - Northamptonshire - Northampton
- Kettering Ceramics Tile Centre - Northamptonshire - Kettering
- Keyline Builders Merchants Ltd - Northamptonshire - Northampton
- Liquid Control Ltd - Northamptonshire - Wellingborough
- Living Space (UK) Ltd - Northamptonshire - Corby
- M Ormond Fabrications - Northamptonshire - Corby
- Marriott Ltd. - Northamptonshire - Rushden
- Martin & Partners Ltd. - Northamptonshire - Northampton
- Marwood Group - Northamptonshire - Northampton
- Mawsley Machinery Ltd - Northamptonshire - Northampton
- Maypine Construction Ltd. - Northamptonshire - Wellingborough
- Mila Hardware UK - Northamptonshire - Daventry
- Miracle Design & Play Ltd. - Northamptonshire - Northampton
- N Stephenson & Son (Kettering) Ltd. - Northamptonshire - Kettering
- Noone Pipelines Ltd - Northamptonshire - Corby
- Orchard Plant - Northamptonshire - Wellingborough
- Perco Engineering Services Ltd. - Northamptonshire - Northampton
- Peter Bennie Ltd - Northamptonshire - Northampton
- Pinnegar and Barnes - Northamptonshire - Northampton
- Postensioned Structures (U K) Ltd. - Northamptonshire - Northampton
- Quantum Windows Ltd. - Northamptonshire - Corby
- R B Services - Northamptonshire - Towcester
- Robert Speck Ltd. - Northamptonshire - Towcester
- Sharman Plant Ltd. - Northamptonshire - Kettering
- Shenstone Plant Ltd. - Northamptonshire - Northampton
- Shepherd Engineering Services Ltd. - Northamptonshire - Northampton
- Shepherd Park & Leisure Homes Ltd. - Northamptonshire - Rushden
- Smc Construction (2000) Ltd. - Northamptonshire - Kettering
- South Midlands Construction Ltd. - Northamptonshire - Wellingborough
- Sovereign Plant Ltd. - Northamptonshire - Kettering
- Steel Solutions Ltd. - Northamptonshire - Northampton
- Steele and Bray Ltd - Northamptonshire - Northampton
- Stertil UK Ltd - Northamptonshire - Northampton
- T & W Holdings Ltd. - Northamptonshire - Northampton
- The Central Carpet Co. Ltd. - Northamptonshire - Northampton
- Thomas (Haulage) Ltd. - Northamptonshire - Northampton
- Towcester Building Supplies Ltd - Northamptonshire - Towcester
- Travis Perkins Plc - Northamptonshire - Northampton
- Tripod Crest Ltd. - Northamptonshire - Northampton
- Uk Generators Ltd - Northamptonshire - Corby
- Unipas Services Ltd. - Northamptonshire - Northampton
- Versalift Distributors (U K ) Ltd. - Northamptonshire - Kettering
- Volkerinfra Ltd. - Northamptonshire - Kettering
- Volvina Ltd. - Northamptonshire - Northampton
- Weldtech Services - Northamptonshire - Daventry
- Welland Timber Products Ltd. - Northamptonshire - Corby