| Name | Region |
|---|---|
| Genius 2000 Software | Cambridgeshire |
| Genius Group Ltd | |
| Genius Hub | |
| GenoME Diagnostics Ltd | |
| GenomeKey | |
| Genomics Ltd | |
| Genomics plc | |
| Gensyn | |
| Gentronix Ltd | |
| GENZ Biotechnology | |
| Geologix Ltd | Norfolk |
| Geomatic Ventures Ltd | |
| GeoMEM Ltd | Dundee |
| Geoplan | North Yorkshire |
| George James Software Ltd | Surrey |
| George Medicines | Greater London |
| Georgia Design Associates | Merseyside |
| Geospatial Insight | |
| GeoSpock | Cambridgeshire |
| Geostream Solutions Ltd | Nottinghamshire |
| Geovation | |
| GerritForge Ltd | Greater London |
| GerritHub | |
| Get Borderless Ltd | |
| Get Down On I.T. Ltd | West Midlands |
| Get Glow Ltd | |
| Get IT Experts | |
| Get Licensed Ltd | |
| Get Review | |
| Get Safe Online Ltd | West Midlands |
| Get Savvy Marketing Ltd | |
| GetAgent Ltd | Greater London |
| GetDotted | Essex |
| Getech Ltd | Suffolk |
| GetExtra | East Riding of Yorkshire |
| Getform | |
| GetGround | |
| Gethyn Jones | Hampshire |
| GetJohn | |
| GetKnow | |
| GetMediaWise Ltd | |
| Getonfast Ltd | Lincolnshire |
| GetOnIT | Dorset |
| GetOnline Ltd | Cheshire |
| GetSited Ltd | West Midlands |
| getyouonline.co.uk | Nottinghamshire |
| GForce Web Design | |
| GG Link | |
| GGM360 | |
| GGMR |