| GEEIQ | Greater London |
| Geek Designs Ltd | |
| Geek Guru IT Support | West Midlands |
| Geekflare | |
| Geeks Ltd | Greater London |
| Geeks Toy | Northamptonshire |
| Geeky Tech | |
| Gel Creative | Kent |
| Gel Solutions | Berkshire |
| GEL Studios Ltd | |
| GEM Cable Solutions | Hertfordshire |
| Gemfish IT Ltd | South Yorkshire |
| Gemini 2000 Ltd | Dorset |
| Gemini Communications Ltd | Cumbria |
| Gemini Networks Ltd | |
| Gemini Systems | |
| GeminiTec Ltd | Hampshire |
| GEMsoft7 Ltd | Glasgow |
| Gemstone IT Services Ltd | |
| Gen2 Neuroscience Ltd | |
| Genactis Group Ltd | |
| Genalog Ltd | Kent |
| Gendo | |
| Genedrive plc | |
| Genedrive plc | |
| GeneFirst Ltd | |
| Genei | |
| Gener8 | |
| General Architecture for Text Engineering | South Yorkshire |
| General Information Systems Ltd | Cambridgeshire |
| Generate UK | Berkshire |
| Generation Community Ventures Ltd | |
| Generation Investment Management, LLP | |
| Generation X Computers Ltd | Shropshire |
| Generation10 | |
| generationNet | Leicestershire |
| Generative Vision Ltd | |
| Generator Creative Consultants Ltd | |
| Genese Solution | |
| Genesis Business Systems | East Riding of Yorkshire |
| Genestack | |
| GeneticDigital | |
| Genflow Biosciences plc | |
| Genie AI Ltd | |
| Genie Internet Technologies Ltd | |
| Genie Ventures | Cambridgeshire |
| Genie Ventures Ltd | Cambridgeshire |
| GenieConnect | |
| GENinCode plc | |
| Genisys | Belfast |