| RMR Control & Automation Ltd | Northamptonshire |
| RMS | |
| RNA Automation Ltd | |
| RNDpoint Ltd | |
| Road Tech Computer Systems Ltd | Hertfordshire |
| Road Traffic Solutions Ltd | |
| RoadSense Advanced Technologies Ltd | |
| Rob Fenech | |
| Roband Electronics plc | Surrey |
| Robert Bethell | Lancashire |
| Robert Gordon University | Aberdeen |
| Robert Gordon University Aberbeen - School of Computing | |
| Robert Young Associates Ltd | Greater Manchester |
| Robin AI | |
| RoboK | |
| Robot Bits | Greater London |
| Robot Electronics | Norfolk |
| Robotica Machine Learning Ltd | |
| Robotical Ltd | |
| Robotics Installations Ltd | |
| RoboTraders | |
| Robots Direct | Gloucestershire |
| Roc Pro | Greater London |
| Roc Search | Berkshire |
| Roca Systems | Belfast |
| Rochen Ltd | Dundee |
| Rock Mission | Greater London |
| Rock Solid Knowledge Ltd | |
| Rocket Communication Ltd | |
| Rocket Launch | |
| Rocket Research | |
| Rocket Sports | |
| Rocket Website Design | |
| RocketAI | |
| rocketAI | |
| Rocketmakers | |
| Rocketmakers Ltd | |
| RocketPhone.ai Ltd | |
| Rocketvan | |
| Rocketware | |
| Rockford Components Ltd | Suffolk |
| RockIT Ltd | Greater London |
| RockMill Ltd | East Sussex |
| Rockpool Digital Ltd | |
| Rockport Software Ltd | Berkshire |
| Rockstar North | Edinburgh |
| Rocktime | Dorset |
| Rocky Robots Ltd | |
| RocSearch | |
| Rodeo Games | |