| PIN IoT | |
| Pin Media Ltd | Staffordshire |
| Pinblox Blockchain Services | |
| Pineapple Builder | |
| Pineapple Lounge Ltd | |
| Ping Money | |
| PingPong | |
| PingPress Ltd | |
| Pink Connect | Warwickshire |
| Pink Pixel Creative | South Yorkshire |
| Pinnacle Internet Marketing Ltd | Cardiff |
| Pinpoint | |
| Pinsah Design | Northamptonshire |
| Piogroup Sofware | |
| Pioneer Computing | |
| Pioneer Software | Lincolnshire |
| Pipe Flow Software | Cheshire |
| Pipe Ten Hosting Ltd | South Yorkshire |
| Pipedream Design Ltd | Greater London |
| Pipit Global | |
| Pippas Web | Herefordshire |
| Piran Technologies Ltd | Cornwall |
| Piranha Designs | Gibraltar |
| Pirbright Institute | |
| Pisano Ltd | |
| Pisys | Aberdeen |
| Pitch Consultants | |
| Pitchbooking | Belfast |
| Pitman Training Group Ltd | West Yorkshire |
| Pivale Ltd | |
| Pivot Ltd | |
| Pivotal | |
| Pivotal Scientific Ltd | |
| Pixable Ltd | |
| Pixalytics Ltd | |
| Pixated Ltd | |
| Pixcell | |
| Pixel | |
| Pixel Air | |
| Pixel Builders Ltd | West Yorkshire |
| Pixel by Pixel Ltd | West Sussex |
| Pixel Cellar | Cheshire |
| Pixel Creation Ltd | Buckinghamshire |
| Pixel Fields Agency | |
| Pixel Freak Creative | |
| Pixel Hero Media Ltd | Bristol |
| Pixel Inspiration Holdings Ltd | Greater Manchester |
| Pixel Kicks | |
| Pixel Labs | Leicestershire |
| Pixel Pixel | |