| Braemac Ltd | |
| Braided Communications Ltd | |
| Brain Flare Technologies | |
| Brain Labs Digital Ltd | |
| Brainbox Webtech Ltd | Greater London |
| Brainboxes Ltd | Merseyside |
| Braincures | |
| Braindigit | |
| Brainomix Ltd | |
| BrainsHub | |
| Brainwave | |
| Brainwave AI Technologies Ltd | |
| Brainwave Discovery Ltd | |
| BrainWeb Ltd | Norfolk |
| BrainZ Digital | |
| Bramble Energy | |
| Bramfit Tech Labs Ltd | |
| Bramfitt Technology Labs | |
| Branchspace | |
| Brand Communications Ltd | Cambridgeshire |
| Brand Dezign Ltd | |
| Brand House Group Ltd | |
| Brand Magic Media Ltd | Buckinghamshire |
| Brand Planet Ltd | |
| Brand Web Designs | Greater London |
| Brand42 | |
| Brandan Computer Solutions Ltd | Devon |
| Brandbassador | |
| Branding Mate | |
| Brandix Pro | |
| Brandix Soft | |
| Brandon Cross Technologies Ltd | |
| Brandpa | |
| BrandRefinery | |
| Brandshout | Cambridgeshire |
| Brandtastic Ltd | |
| Brandwatch | |
| Brandworkz Ltd | |
| Bransom Retail Systems Ltd | Hertfordshire |
| Brass Agency | West Yorkshire |
| Brave Agency | |
| Brave Bear Marketing | |
| Braveheart Web Design | |
| Bravo Networks | |
| Bray Leino CX | Bristol |
| Breakline Ltd | |
| Breakwater IT Ltd | Norfolk |
| Breakway Digital | |
| Breathe | West Sussex |
| Breathe Digital Solutions Ltd | |