| Uhura Solutions Ltd | Greater London |
| UiParadox | |
| UK Access User Group | Gloucestershire |
| UK Biobank Ltd | Greater Manchester |
| UK Business Angels Association | |
| UK Business IT Ltd | Staffordshire |
| UK Circuits and Electronics Solutions Ltd | Greater Manchester |
| UK Collaborative Computational Projects | Cheshire |
| UK Data Archive | |
| UK Datahouse | |
| UK Design Group | Staffordshire |
| UK DEV Ltd | |
| UK Domains | Merseyside |
| UK Free Software Network | Hertfordshire |
| UK Gaming Computers Ltd | Essex |
| UK Ink Supplies | Lincolnshire |
| UK Internet Sites Ltd | Glasgow |
| UK IT Networks Ltd | Cheshire |
| UK IT Recycling Ltd | Shropshire |
| UK Language Solutions Ltd | West Midlands |
| UK Launch Services Ltd | |
| UK Logo Designs | |
| UK Marketing Management Ltd | West Midlands |
| UK PropTech Association Ltd | Greater London |
| UK Research and Innovation | |
| UK Robotics | |
| UK Software Company Ltd | West Midlands |
| UK Solar Generation | |
| UK Space Agency | |
| UK Startup Jobs | |
| UK Tech Investment News | |
| UK Tech News | Greater London |
| UK Telecom Ltd | Surrey |
| UK Web.Solutions Direct Ltd | Greater Manchester |
| UK Webhosting Ltd | Berkshire |
| UK Website Workshop Ltd | Greater Manchester |
| UK Wholesale | Greater Manchester |
| UK's Unix & Open Systems User Group | Hertfordshire |
| UK-2 Ltd | Greater Manchester |
| UK-Ukraine TechBridge | |
| UK.COM | |
| Uk1 | Lancashire |
| UKcentric Ltd | Surrey |
| UKDedicated Ltd | Hertfordshire |
| UKFast.Net Ltd | Greater Manchester |
| UKHost4u | Fife |
| UKIP | Lancashire |
| UKlinkology.co.uk | |
| UKLS Ltd | Cardiff |
| UKNetWeb Ltd | Cornwall |