| Provision Map | Pembrokeshire |
| Provitech Ltd | Leicestershire |
| Provoke Design Ltd | Staffordshire |
| ProVu Communications Ltd | West Yorkshire |
| Proweb (UK) Ltd | Nottinghamshire |
| ProWritingAid | |
| Proxima Software Solutions Ltd | |
| Proximie | |
| Proximity | |
| Proximity Resourcing Ltd | |
| ProxiSmart Ltd | |
| Proxy Ventures UK Ltd | Greater London |
| Prozomix Ltd | |
| PRP Telecom | Surrey |
| Pryme Group Holdings Ltd | |
| PS Training | Flintshire |
| PS Website Design Ltd | |
| Psand Ltd | Bristol |
| psd2html.org | Berkshire |
| PSI-Pay Ltd | West Sussex |
| PSLWeb | Norfolk |
| PSP Academy Ltd | |
| PSP Asset Protection Ltd | Suffolk |
| PSP People Systems Process Ltd | |
| PST Business Solutions Ltd | Berkshire |
| PSU Technology Group | Gloucestershire |
| Psyomics | |
| PSYT Ltd | |
| Psytech International | Warwickshire |
| PT Solutions Ltd | Hampshire |
| PTLGateway Ltd | |
| PTR | Berkshire |
| PTT | Cornwall |
| PublicInput | |
| Publishing Software Company Ltd | Worcestershire |
| Pudsey Computers | West Yorkshire |
| Pufferfish | |
| Puffin Solutions Ltd | Buckinghamshire |
| Pugh Computers Ltd | Ceredigion |
| Pukka Digital | Angus |
| Pull the Pin Agency | |
| Pulmocide | |
| Pulsant Ltd | Berkshire |
| Pulsat.com | North Yorkshire |
| Pulse Power & Measurement Ltd | |
| Pulse Web Design | Newport |
| Pulse-Eight Ltd | Dorset |
| Pulse8 | |
| Pulsestar Software Ltd | |
| Pulsic Ltd | Bristol |