| Coderra Ltd | |
| CodersGlobe | |
| CoderTalent | |
| Coderus Ltd | |
| Codesigner.uk | |
| Codesky | |
| Codestorm Ltd | |
| Codetank | |
| Codethink Ltd | Greater Manchester |
| Codevate Ltd | |
| Codeworks | |
| Codeworx Developers | |
| Codex Media | |
| Codex Software Solutions Ltd | |
| CodeYourFuture | |
| CodeZela | |
| Codier | |
| Codify Ltd | Aberdeen |
| Codigital Ltd | |
| Coding Black Females Ltd | |
| Coding IT | |
| Coding Sprint | |
| Coding.bio | |
| Codixy Ltd | |
| Codora | |
| Codurance | |
| Coeus Software Ltd | |
| Coffee Black | West Midlands |
| Coffee Cup Solutions | |
| Cogapp | |
| CogBooks Ltd | |
| Cogent Focus | Perth and Kinross |
| Cogent2 | |
| Cogna Ltd | |
| Cognetivity Neurosciences Ltd | |
| Cognica | Wiltshire |
| Cognidox Ltd | Cambridgeshire |
| Cognimatic Ltd | |
| Cognino.ai | |
| Cognique | |
| Cognism Ltd | |
| CogniSoft Ltd | Greater Manchester |
| Cognitive.Business Ltd | |
| Cognito | |
| Cognito iQ | Berkshire |
| Cognito Learning | |
| Cognitronics Ltd | Nottinghamshire |
| Cogsy | |
| Coherence Consulting Ltd | |
| Coherent | |