| Belmont Communications Ltd | Aberdeenshire |
| Belmonte Business Equipment Ltd | Greater Manchester |
| Below Zero Hosting Ltd | Edinburgh |
| BeMyEye Holdings Ltd | |
| Ben Dodson | Bristol |
| Ben Everard - Web Developer | Somerset |
| Ben Robertson | South Yorkshire |
| Ben Sky Ltd | West Yorkshire |
| Ben Smith Website Design | Bristol |
| Ben Stokes Marketing | Staffordshire |
| Benchmark Capital Ltd | |
| Benchmark Software Ltd | |
| Benchmarq Ltd | West Sussex |
| Bendi Software Ltd | |
| Benedict Wallis Ltd | |
| Bent Oak Systems | |
| Bentley Walker Ltd | Hampshire |
| Bento Bioworks Ltd | |
| Bergo | Inverclyde |
| Beringar Ltd | |
| Berry Cloud Ltd | |
| Bertey Ltd | |
| Bertha.ai | |
| Berwick Partners | |
| Berwick-upon-Tweed Telecommunications Ltd | |
| Bespak | |
| Bespoke Computing Ltd | Shropshire |
| Bespoke Digital Ltd | |
| Bespoke Internet Ltd | Lancashire |
| Bespoke Software Development Ltd | |
| Best Designs Agency | |
| Best SEO Service London | |
| Best Web Design London | Greater London |
| Best4Systems | West Sussex |
| BestSEO4u Digital Agency | |
| BestStartup.asia | Greater London |
| BestStartup.eu | |
| Betable Group | |
| BetaDen | |
| Betasoft Ltd | |
| Betelguise Web Design | Shropshire |
| Bethnal Green Ventures | |
| Bethnal Green Ventures | |
| Betley Whitehorne Image | |
| BettaPages | |
| Better Agency | |
| Better Brand Agency Ltd | |
| Better Origin | |
| Better Websites | |
| Better-IT | |