| VitVio | |
| Vivacity Labs Ltd | |
| Vivan Therapeutics | |
| Vivid Creative Ltd | |
| Vividfish Ltd | |
| VividQ Ltd | |
| Vivo Telecommunications Ltd | West Midlands |
| Vivo Web Marketing | Glasgow |
| VixT | |
| Vizability.io Web Design, LLP | |
| Vizcom Design Ltd | Greater Manchester |
| Vizero Ltd | |
| Vizibility Design Ltd | Stirling |
| Vizibl | |
| Vizion Network Ltd | |
| VizionOnline | |
| Vizlib | |
| Vizulate Digital Ltd | West Yorkshire |
| Vizzo | Cumbria |
| Vizzuality | Cambridgeshire |
| VJM Computers | |
| VL Tech Digital | |
| VLDB Solutions Ltd | Merseyside |
| VMC (UK) Ltd | Warwickshire |
| Vodafone Group plc | Berkshire |
| Vodafone Ltd | Berkshire |
| Vodworks | |
| Vogal Design Ltd | West Yorkshire |
| Voice Services Ltd | Hertfordshire |
| Voice Technologies Ltd | Renfrewshire |
| VoiceHost Ltd | Norfolk |
| VoiceIPComms Ltd | Cheshire |
| Voicekey | |
| Voicenotes | |
| VoicePower Ltd | West Yorkshire |
| Voices.com, Inc. | |
| Voicescape | |
| Voicetapp | |
| VOiD Applications Ltd | |
| VoIP Unlimited | Dorset |
| VoipSwitch | Greater London |
| Voisey Entertainment Ltd | |
| Voldex Entertainment Ltd | |
| Volex plc | |
| Volo Commerce Ltd | Gloucestershire |
| Volt Technologies Holdings Ltd | |
| Volta Creative | |
| Volteras Technologies Ltd | |
| Volume Group Ltd | |
| Volume Ltd | Berkshire |