| NLSQL Ltd | |
| NM Cabling Solutions | Hertfordshire |
| NNC Group plc | |
| No Code Founders | |
| No CS Degree | |
| No Ink Marketing | |
| No Logo Media, LLC | |
| NoBa Capital Advisers Ltd | |
| NoBlue2 | |
| NoCode.tech | |
| NoCodeLab | |
| Node London | |
| Node4 | Hertfordshire |
| NodeNova | |
| Nodes & Links | |
| Nodus Labs | |
| Nodus Oncology | Edinburgh |
| NoFools Ltd | Nottinghamshire |
| Noisemedia | Lincolnshire |
| Noisy Little Monkey Ltd | Bristol |
| Nolan Business Solutions plc | Hampshire |
| Nomadix Media & International Ltd | |
| Nomas Training | Northumberland |
| Nomical Ltd | Greater Manchester |
| Nomify | |
| Nominate | Bedfordshire |
| Nominet | Oxfordshire |
| Nominet Registrar Services Ltd | Oxfordshire |
| Nonacus Ltd | |
| Nonlinear Dynamics Ltd | Tyne and Wear |
| Nonweiler Ltd | Berkshire |
| nooQ | |
| Noovo Creative | North Yorkshire |
| Norcott Technologies Ltd | Cheshire |
| Nordstar Partners Ltd | |
| Nordstone | |
| Norfolk Web Support | Norfolk |
| Norgic | |
| Norse Consulting | |
| Nortech Control Systems Ltd | Torfaen |
| Nortech Network Services | |
| Nortech Software | Shropshire |
| North | Glasgow |
| North Devon Design | Devon |
| North Devon Electronics Ltd | Devon |
| North Devon Plus | |
| North East Technology Park | County Durham |
| North East Telecommunications Ltd | |
| North Wales Computer Services | Conwy |
| North West Aerospace Alliance | |