| CompuDOS | |
| Compunet Systems Ltd | |
| Compusense-UK Ltd | Essex |
| Computacenter plc | Hertfordshire |
| Computair Ltd | Bedfordshire |
| Computalabel International | Leicestershire |
| Computaplace | |
| Compute4U Ltd | Kent |
| Computeam Ltd | Greater Manchester |
| CompuTech Services Ltd | Isle of Man |
| Computek Consultancy | Rhondda Cynon Taf |
| Computency Ltd | Berkshire |
| Computer & Control Systems Ltd | West Lothian |
| Computer Advice Centre | |
| Computer Aided Development Corporation Ltd | Hertfordshire |
| Computer Angels | Greater London |
| Computer Application Services Ltd | Edinburgh |
| Computer Assistance Oxford | |
| Computer Automation Technology Ltd | |
| Computer Bargains Ltd | Greater Manchester |
| Computer Being Ltd | |
| Computer Care Services | Berkshire |
| Computer Care UK | |
| Computer Clinik Ltd | Lincolnshire |
| Computer Communications Ltd | Hampshire |
| Computer Components Ltd | Devon |
| Computer Connect Ltd | Hertfordshire |
| Computer Design Ltd | Greater London |
| Computer Disposals Ltd | Cheshire |
| Computer Doctors Ltd | |
| Computer Forensics Lab | |
| Computer forensics online Ltd | Suffolk |
| Computer FX Ltd | North Yorkshire |
| Computer Geeks Ltd | Bristol |
| Computer King | |
| Computer Links Ltd | West Lothian |
| Computer Literate | Nottinghamshire |
| Computer Marvels | Greater London |
| Computer Network Cabling Ltd | Devon |
| Computer Network Defence Ltd | Somerset |
| Computer Orbit | Tyne and Wear |
| Computer Place | Greater London |
| Computer Planet Ltd | Cheshire |
| Computer Rehab | Hertfordshire |
| Computer Repair Ltd | |
| Computer Repair Norwich | |
| Computer Repair Shop | |
| Computer Repairs UK | Kent |
| Computer Response Ltd | |
| Computer Service Centre Ltd | Norfolk |