| Vypr Validation Technologies Ltd | |
| Vysiion Ltd | Wiltshire |
| Vyta Ltd | |
| Vytech Solutions | |
| W Communications | |
| w3Designs Ltd | Carmarthenshire |
| W3Layouts Ltd | Greater London |
| w3net Solutions Ltd | Devon |
| w3nutes | |
| WA&S Ltd | Bristol |
| WAA Chosen Ltd | |
| WaaS | |
| WabiSabi | |
| Wabsys Ltd | West Yorkshire |
| WadeDigital | |
| Waer Systems Ltd | West Sussex |
| Wafer Technology Ltd | Buckinghamshire |
| Wagada Digital | |
| Wagtail | |
| Waiterio | |
| Wakefield RISC OS Computer Club | West Yorkshire |
| Wakelet | |
| Wakestart Ltd | |
| Wakster | Worcestershire |
| Walker Communications | |
| Walker IT Support | |
| Walker Technology Solutions Ltd | |
| Wall to Wall Communications | Greater London |
| Wallscope Ltd | Edinburgh |
| Walsh Digital Marketing | |
| Walter Scott & Partners Ltd | |
| Walters Snowdon Advertising Ltd | |
| WalthamSoft.com | Greater London |
| WAMA | |
| Wannabe Creative Ltd | Glasgow |
| WaqarTech Ltd | West Midlands |
| Waracle | Greater London |
| Ward Security | |
| Wardley Electronics Ltd | Suffolk |
| Wardour | |
| Wareable Ltd | Greater London |
| Warehouse One Distribution Ltd | |
| Warlord Electronics Ltd | |
| Warminster Web | |
| Warnborough College | Kent |
| Warp Design | |
| Warsash IT Solutions Ltd | |
| Warwick Analytics | |
| Warwick Analytics Services Ltd | |
| Warwick Business School | |