| VMC (UK) Ltd | Warwickshire |
| Vodafone Group plc | Berkshire |
| Vodafone Ltd | Berkshire |
| Vogal Design Ltd | West Yorkshire |
| Voice Services Ltd | Hertfordshire |
| Voice Technologies Ltd | Renfrewshire |
| VoiceHost Ltd | Norfolk |
| VoiceIPComms Ltd | Cheshire |
| Voicekey | |
| VoicePower Ltd | West Yorkshire |
| Voices.com, Inc. | |
| Voicescape | |
| VoIP Unlimited | Dorset |
| VoipSwitch | Greater London |
| Voisey Entertainment Ltd | |
| Volex plc | |
| Volo Commerce Ltd | Gloucestershire |
| Volt | |
| Volta Creative | |
| Volteras Technologies Ltd | |
| Volume Group Ltd | |
| Volume Ltd | Berkshire |
| Volute Ltd | Nottinghamshire |
| Vone Services Ltd | Essex |
| Voodoo IT Ltd | Bristol |
| Voodoo Ltd | Greater London |
| Voodoochilli Design Ltd | |
| Vooware Ltd | |
| Vortex Interactive | Merseyside |
| Vortex IQ | |
| Vortexa Ltd | |
| Vostra Media Ltd | |
| Voxpopme Ltd | |
| Voxpopme Ltd | |
| VoxSmart | |
| Voyager Networks | Berkshire |
| Voyager Software Ltd | Hampshire |
| VPW Systems (UK) Ltd | Devon |
| VR Capital Group Ltd | |
| VRPark Ltd | |
| VSense Ltd | West Sussex |
| VSN International Ltd | Hertfordshire |
| VST Enterprises Ltd | Greater Manchester |
| Vtec Solutions Ltd | |
| VTEX | Greater London |
| vTime Holdings Ltd | Merseyside |
| VTM (UK) Ltd | Hertfordshire |
| VTS Software Ltd | |
| VTS Web Services | |
| VTUK | Oxfordshire |