County Index - Mid Glamorgan
- 1001 Security Systems - Mid Glamorgan - Caerphilly
- 1ST Solutions Recruitment Ltd. - Mid Glamorgan - Pontypridd
- 21st Century Discos Ltd - Mid Glamorgan - Bridgend
- 24 Hour Recovery Services - Mid Glamorgan - Bridgend
- 24/7 Courier Network Ltd - Mid Glamorgan - Bridgend
- 3 D Render Specialists - Mid Glamorgan - Mountain Ash
- 5 Star Vans - Mid Glamorgan - Hengoed
- 7 Day Tools - Mid Glamorgan - Treharris
- A M J Engineering Ltd. - Mid Glamorgan - Mountain Ash
- A & A Plastics Ltd. - Mid Glamorgan - Bridgend
- A & B Waste - Mid Glamorgan - Caerphilly
- A & C Soft Furnishings - Mid Glamorgan - Porthcawl
- A & K Cash Registers - Mid Glamorgan - Caerphilly
- A & K Roller Shutter Doors - Mid Glamorgan - Merthyr Tydfil
- A A Dry Lining Contractors Ltd - Mid Glamorgan - Pontyclun
- A B Acoustics - Mid Glamorgan - Tonypandy
- A C P Computer Systems - Mid Glamorgan - Tonypandy
- A G S (Technology) Ltd. - Mid Glamorgan - Caerphilly
- A J Gill & Son - Mid Glamorgan - Tonypandy
- A L & E J Webb & Sons Contractors - Mid Glamorgan - Pontypridd
- A L Adams Builders Ltd - Mid Glamorgan - Pontypridd
- A L B Autocare - Mid Glamorgan - Bridgend
- A Lea (Jewellers) Ltd - Mid Glamorgan - Aberdare
- A Lewis - Mid Glamorgan - Aberdare
- A Marshall Surveying & Site Engineering Services - Mid Glamorgan - Pontypridd
- A P Discounts - Mid Glamorgan - Aberdare
- A Plus Training and Business Services Ltd - Mid Glamorgan - Caerphilly
- A R Thomas - Mid Glamorgan - Bridgend
- A R W Design & Build - Mid Glamorgan - Bridgend
- A T Plant & Building Contractors - Mid Glamorgan - Tonypandy
- A W C Dairies Ltd - Mid Glamorgan - Treorchy
- A W Thomas - Mid Glamorgan - Tonypandy
- A Williams & Sons - Mid Glamorgan - Treorchy
- A. N. Supplies (Wholesale Electrical Distributors) Ltd - Mid Glamorgan - Bridgend
- A1 Survey Ltd - Mid Glamorgan - Caerphilly
- A48 Auto Salvage - Mid Glamorgan - Bridgend
- AB Connectors Ltd - Mid Glamorgan - Mountain Ash
- Abba Scrap Metal Merchants - Mid Glamorgan - Merthyr Tydfil
- Abbatoir Caerphilly, The - Mid Glamorgan - Caerphilly
- Abbey Tile Centre Ltd. - Mid Glamorgan - Bridgend
- Abbeystreet Ltd - Mid Glamorgan - Caerphilly
- Abc Web Design - Mid Glamorgan - Bridgend
- Aber-Dashery - Mid Glamorgan - Aberdare
- Aberaman Discount Food Store - Mid Glamorgan - Aberdare
- Abercynon French Polisher - Mid Glamorgan - Mountain Ash
- Aberdare Demolition Ltd - Mid Glamorgan - Aberdare
- Aberdare Picture Stall - Mid Glamorgan - Aberdare
- Abril Industrial Waxes Ltd. - Mid Glamorgan - Bridgend
- Abtest Ltd. - Mid Glamorgan - Mountain Ash
- Acacia Joinery Ltd. - Mid Glamorgan - Bridgend
- Academy Surrounds - Mid Glamorgan - Merthyr Tydfil
- Accu-Tech Systems Ltd. - Mid Glamorgan - Caerphilly
- Ace Scaffolding - Mid Glamorgan - Bridgend
- Acemaster Services Ltd. - Mid Glamorgan - Bridgend
- Acorn Recruitment - Mid Glamorgan - Pontypridd
- Acorn Travel South Wales Ltd - Mid Glamorgan - Treharris
- Acreharrow Ltd. - Mid Glamorgan - Bridgend
- Acw Technology Ltd. - Mid Glamorgan - Tonypandy
- Adata Systems - Mid Glamorgan - Caerphilly
- Adawall Construction Chemicals - Mid Glamorgan - Aberdare
- Adcock Express - Mid Glamorgan - Hengoed
- Addis Germany Ltd - Mid Glamorgan - Bridgend
- Addis Housewares Ltd. - Mid Glamorgan - Bridgend
- Addis Ltd - Mid Glamorgan - Bridgend
- Adrian Llewellyn Groundworks Ltd - Mid Glamorgan - Bridgend
- Advance Computing Technology - Mid Glamorgan - Caerphilly
- Advanced Computing Technology - Mid Glamorgan - Caerphilly
- Advanced Fire Technologies Ltd - Mid Glamorgan - Caerphilly
- Advanced Pro Tools Ltd - Mid Glamorgan - Pontypridd
- Advasign Sign Writers - Mid Glamorgan - Pentre
- Aerial Supplies - Mid Glamorgan - Hengoed
- Aeroresponse Ltd - Mid Glamorgan - Mountain Ash
- Aerospace Wales Forum Ltd - Mid Glamorgan - Bridgend
- AES Tiling - Mid Glamorgan - Aberdare
- Affordable Awnings - Mid Glamorgan - Rhondda
- Air Cleaning Systems Ltd - Mid Glamorgan - Pontyclun
- Air Conditioning Systems (Wales) Ltd - Mid Glamorgan - Caerphilly
- Air Conditioning Systems Wales Ltd - Mid Glamorgan - Caerphilly
- Aircraft Maintenance Support Services Ltd. - Mid Glamorgan - Bridgend
- Aircraft Materials Ltd. - Mid Glamorgan - Bridgend
- Airport Specialists - Mid Glamorgan - Hengoed
- Airtech Ventilation Ltd - Mid Glamorgan - Caerphilly
- Akela Ltd - Mid Glamorgan - Bridgend
- Akg Uk Ltd. - Mid Glamorgan - Porth
- Aks Plastering Ltd - Mid Glamorgan - Aberdare
- Al-Met Ltd - Mid Glamorgan - Pontyclun
- Alan David Carvell - Mid Glamorgan - Bridgend
- Alans General Store - Mid Glamorgan - Aberdare
- Alans Toolbox - Mid Glamorgan - Bridgend
- Alas Wheelchair Depot - Mid Glamorgan - Pontypridd
- Alb Print Services Ltd. - Mid Glamorgan - Caerphilly
- Albert & Flaherty Ltd - Mid Glamorgan - Merthyr Tydfil
- Albion Flue Systems Ltd - Mid Glamorgan - Pontypridd
- Albion Storage Equipment Ltd - Mid Glamorgan - Pontypridd
- Alert Health & Safety - Mid Glamorgan - Bridgend
- Alfred Hawker & Sons Ltd. - Mid Glamorgan - Hengoed
- Algebra Business Solutions Ltd - Mid Glamorgan - Pontyclun
- Alison's Pantry - Mid Glamorgan - Aberdare
- Alito (U K) Ltd - Mid Glamorgan - Bridgend
- All Seasons Blinds Ltd. - Mid Glamorgan - Caerphilly
- All Sewn Up - Mid Glamorgan - Bridgend
- Allan Stuckey Architects - Mid Glamorgan - Aberdare
- Allevard Springs Ltd. - Mid Glamorgan - Tonypandy
- Allfit Installations - Mid Glamorgan - Pontypridd
- Alliance Computers - Mid Glamorgan - Bridgend
- Alliance Design Computers - Mid Glamorgan - Porthcawl
- Alliance Storage - Mid Glamorgan - Pontyclun
- Allied Aerosystems Ltd. - Mid Glamorgan - Pontypridd
- Allied Aspects Ltd - Mid Glamorgan - Pontypridd
- Allsafe Locksmiths - Mid Glamorgan - Caerphilly
- Almesco Ltd. - Mid Glamorgan - Bridgend
- Alpha Steel Buildings Ltd - Mid Glamorgan - Caerphilly
- Alpine Land Surveyors Ltd - Mid Glamorgan - Aberdare
- Alrod Ltd - Mid Glamorgan - Merthyr Tydfil
- Alsamex Products Ltd - Mid Glamorgan - Pontyclun
- ALTech UK Labelling Technologies Ltd - Mid Glamorgan - Bridgend
- Altern8 Media - Mid Glamorgan - Merthyr Tydfil
- Aluminium Windows & Shopfronts Ltd. - Mid Glamorgan - Bridgend
- AMA Vehicle Finance Limted - Mid Glamorgan - Bridgend
- Amaris Granite & Marble Ltd. - Mid Glamorgan - Bridgend
- Ambassador Fire Solutions - Mid Glamorgan - Pontypridd
- Amber Battery & Engineering Co. Ltd. - Mid Glamorgan - Pontypridd
- Amber Engineering Ltd - Mid Glamorgan - Hengoed
- Amberfalls - Mid Glamorgan - Pontyclun
- Amberwell Engineering Services Ltd - Mid Glamorgan - Bridgend
- Amgen Cymru - Mid Glamorgan - Aberdare
- Amnitec Ltd. - Mid Glamorgan - Merthyr Tydfil
- Andrew Ball Brickwork & Building Contractor - Mid Glamorgan - Caerphilly
- Andrews Sykes Hire Ltd - Mid Glamorgan - Pontypridd
- Angel - Mid Glamorgan - Caerphilly
- Angel Machine Guarding - Mid Glamorgan - Caerphilly
- Animal & Garden Supplies Ltd - Mid Glamorgan - Bridgend
- Anrod Industrial Supplies - Mid Glamorgan - Pontypridd
- Anthony Jenkins & John Gould - Mid Glamorgan - Bridgend
- Anthony Peter David - Mid Glamorgan - Bridgend
- Anthony R & L - Mid Glamorgan - Bridgend
- Antur I Gymru Newydd Cyfyngedig - Mid Glamorgan - Porth
- Apex Surveyors Ltd. - Mid Glamorgan - Aberdare
- Apollo Alarms Ltd - Mid Glamorgan - Caerphilly
- Applied Arials & Satelites - Mid Glamorgan - Aberdare
- Applied Automation Ltd. - Mid Glamorgan - Bridgend
- Applied Power Services (South Western) Ltd - Mid Glamorgan - Rhondda
- Aquasafe Building Services Engineers Ltd - Mid Glamorgan - Bridgend
- Arc Radius Electrics - Mid Glamorgan - Caerphilly
- Arch Services - Mid Glamorgan - Tonypandy
- Architectural & Structural Engineering Ltd - Mid Glamorgan - Caerphilly
- Architecture Ir - Mid Glamorgan - Merthyr Tydfil
- Arco Ltd - Cardiff - Mid Glamorgan - Cardiff
- Ardagh Metal Packaging Uk Ltd (Merthyr Tydfil) - Mid Glamorgan - Merthyr Tydfil
- Arena Supplies Ltd - Mid Glamorgan - Pontyclun
- Armada Industries & Technologies - Mid Glamorgan - Caerphilly
- Armed Forces Careers Offices - Mid Glamorgan - Bridgend
- Army Careers Information Office - Mid Glamorgan - Merthyr Tydfil
- Arrow Polybags - Mid Glamorgan - Merthyr Tydfil
- Art by Design - Mid Glamorgan - Bridgend
- Arthur Lewis - Mid Glamorgan - Tonypandy
- Arthurleah Ltd - Mid Glamorgan - Porthcawl
- Artificial Floral Supplies - Mid Glamorgan - Pontypridd
- Artisan Framing - Mid Glamorgan - Bridgend
- Arundel Decorating Services Ltd - Mid Glamorgan - Pontyclun
- Asbri Golf Ltd - Mid Glamorgan - Caerphilly
- Ascend I T Services - Mid Glamorgan - Aberdare
- Ascend IT Services - Mid Glamorgan - Aberdare
- Ascent Group Ltd, The - Mid Glamorgan - Pontypridd
- Ashtead - Mid Glamorgan - Bridgend
- Aspect Business Communications Ltd - Mid Glamorgan - Bridgend
- Aspect Business Communications Ltd - Mid Glamorgan - Bridgend
- Aspect Business Mobiles Ltd - Mid Glamorgan - Bridgend
- Aspen Design Services Ltd. - Mid Glamorgan - Bridgend
- Assured Computers - Mid Glamorgan - Bridgend
- Astra Cabs Ltd - Mid Glamorgan - Pontyclun
- Astra Games Holdings Ltd - Mid Glamorgan - Bridgend
- Astra Plant Ltd. - Mid Glamorgan - Treharris
- Astra Plant Wales - Mid Glamorgan - Treharris
- Astutis - Mid Glamorgan - Cardiff
- Astutis Ltd - Mid Glamorgan - Cardiff
- Atlantic Plastics Ltd. - Mid Glamorgan - Bridgend
- Aubrey Electrical - Mid Glamorgan - Bridgend
- Aubrey Road General Store - Mid Glamorgan - Tonypandy
- Aucom Ltd - Mid Glamorgan - Hengoed
- Aucom Ltd - Mid Glamorgan - Cardiff
- Authentic Alignment Ltd - Mid Glamorgan - Caerphilly
- Auto Sprays Paint Supplies - Mid Glamorgan - Pontypridd
- Avalon Plastics South Wales Ltd - Mid Glamorgan - Hengoed
- Avanti Solar Ltd - Mid Glamorgan - Porth
- Avonride Ltd. - Mid Glamorgan - Maesteg
- Ayjay Group - Mid Glamorgan - Caerphilly
- Azon U K Ltd - Mid Glamorgan - Hengoed
- B & W Tunnelling Ltd. - Mid Glamorgan - Bridgend
- B & C Foundry Ltd - Mid Glamorgan - Caerphilly
- B & M Retail Ltd (Porthcawl) - Mid Glamorgan - Porthcawl
- B & R Building Services - Mid Glamorgan - Porthcawl
- B and C Non-Ferrous Foundry Ltd - Mid Glamorgan - Caerphilly
- B C R - Mid Glamorgan - Caerphilly
- B C R Cash Registers - Mid Glamorgan - Caerphilly
- B J Plant Services - Mid Glamorgan - Bridgend
- B R C Sportswear Specialist Ltd - Mid Glamorgan - Caerphilly
- B W Griffiths - Mid Glamorgan - Caerphilly
- B W M Ltd - Mid Glamorgan - Pontypridd
- B.G.S Motors & Mowers Ltd - Mid Glamorgan - Bridgend
- Badgers Landscape and Garden Design Centre Ltd - Mid Glamorgan - Bridgend
- Bailey (Pentre) - Mid Glamorgan - Pentre
- Balloons by Bev - Mid Glamorgan - Caerphilly
- Banbury Technology Ltd - Mid Glamorgan - Bridgend
- Bank Farm Trailers Ltd - Mid Glamorgan - Bridgend
- Barafundle C D's - Mid Glamorgan - Bridgend
- Baraka Foods Ltd. - Mid Glamorgan - Pentre
- Bargain Blinds - Mid Glamorgan - Pontyclun
- Barnett R E & M - Mid Glamorgan - Pontyclun
- Baron Jackson Ltd. - Mid Glamorgan - Bridgend
- Barrie Lewis & Co. Ltd. - Mid Glamorgan - Caerphilly
- Barry Cosslett Ltd - Mid Glamorgan - Pontypridd
- Barwoods - Mid Glamorgan - Merthyr Tydfil
- Bathroom Installation Services - Mid Glamorgan - Bridgend
- Baxter Healthcare Ltd - Mid Glamorgan - Merthyr Tydfil