| Pro Care & Support Services Limited | Abercarn | 2017 |
| Pro Sprinklers Limited | Delph | 2017 |
| Pro-Active Physiocare Limited | Isleworth | 2025 |
| Pro-Help Limited | Leicester | 2018 |
| Pro-Help Support Limited | Leicester | 2026 |
| Pro-Tech Fire and Security Ltd | Carluke | 2025 |
| Pro-Tech Security (Leeds) Ltd | London | 2024 |
| Proace Ltd | Stafford | 2021 |
| Proace Plus Ltd. | Newcastle Upon Tyne | 2025 |
| Proactive Fire Ltd | Oldham | 2024 |
| Proactive Safeguarding Ltd | Maidstone | 2022 |
| Probe Security Services Limited | Ramsgate | 2024 |
| Procare Gloucestershire Services Ltd | Gloucester | 2020 |
| Procare Services Plus Ltd | Gloucester | 2023 |
| Proctor Partnerships (Yorkshire) Limited | Sheffield | 2012 |
| Producer Link UP Project CIC | London | 2025 |
| Production Safety Solutions Limited | Birmingham | 2026 |
| Productive Pigeon Consultants Ltd | London | 2022 |
| Professional Health & Care Practitioners Limited | Birmingham | 2021 |
| Professional Safety Consultants Limited | Middlesbrough | 2024 |
| Professional Training Group UK Limited | London | 2019 |
| Professional Witnesses Limited | Atherton | 1997 |
| Proformance Clinics Limited | Bournemouth | 2018 |
| Profqual Ltd | London | 2020 |
| Progenitri Limited | Exeter | 2025 |
| Programme Delivery Support Limited | Weymouth | 2018 |
| Progress Makers Limited | Bradford | 2024 |
| Progressive Consultancy and Training Limited | Waterlooville | 2019 |
| Progressive Fitness & Physiotherapy Limited | Cookstown | 2021 |
| Progressive Independence Limited | Liverpool | 2023 |
| Progressive Independent Visitors Limited | York | 2022 |
| Progressive Safety (Suffolk) Limited | Barking | 2021 |
| Proguard SOL Ltd | London | 2025 |
| Proinspect Safety Private Limited | London | 2026 |
| Project Communities CIC | Huddersfield | 2020 |
| Project Heart C.I.C. | Newton Le Willows | 2018 |
| Project Runner Limited | Fareham | 2012 |
| Project Scimus Ltd | London | 2024 |
| Projectvsmayhem Ltd | London | 2026 |
| Prolife Medics Ltd | Blackpool | 2022 |
| Prometheus Fire Detection and Security Ltd | Sittingbourne | 2020 |
| Prometheus Fire Safety Solutions Limited | Peterborough | 2019 |
| Prometheus FSS Ltd | Stratford | 2022 |
| Prometheus Safety Services Ltd | Birkenhead | 2021 |
| Prominent Mind CIC | Harlow | 2025 |
| Promise Academy Limited | Northampton | 2023 |
| Promote Healthcare Ltd | Birmingham | 2023 |
| Proofit Group Ltd | London | 2026 |
| Proper Healthcare Ltd | London | 2020 |
| Proper Property Protection Ltd | Enfield | 2024 |
| Property Fire Protection Limited | Horsham | 2013 |
| Proqr UK Limited | Port Talbot | 2009 |
| Prosperity Care Solutions Ltd | Nottingham | 2023 |
| Protea Fire Ltd. | London | 2009 |
| Protea Sonos Imaging Ltd | Maidstone | 2025 |
| Protect & Prevent Ltd | Ware | 2019 |
| Protection Regulation Outsourcing Limited | Hexham | 2019 |
| Protivnick Training Ltd | Felixstowe | 2025 |
| Proton Fire UK Ltd | London | 2023 |
| Proud to BE Sylheti Welfare Trust UK | London | 2021 |
| Provent Solutions Ltd | High Wycombe | 2022 |
| Provide.Guide.Protect Ltd | Nottingham | 2022 |
| Provident Healthcare ENG Ltd | Rugby | 2020 |
| Provident Healthcare Scotland Ltd | Glasgow | 2020 |
| PROVIDER24/7 Limited | London | 2022 |
| Prowidein Limited | Manchester | 2024 |
| Prudent Healthcare Services Ltd | Willenhall | 2019 |
| Prydwyn Consulting Ltd | Blackwood | 2022 |
| Pryme Tyme Care Service Ltd | Darlington | 2025 |
| PS & ED Limited | Huddersfield | 2025 |
| PS Complexcare Limited | Coventry | 2022 |
| PS Safeguarding Ltd | Uxbridge | 2022 |
| PSL Logistics Ltd | Aberdeen | 2020 |
| PSM Fire Ltd | Wokingham | 2017 |
| PSM Safety Limited | Middlesbrough | 2025 |
| Psych VA Ltd | Darlington | 2022 |
| Psychiatryglobal Limited | London | 2026 |
| Psychology Grounded Ltd | Liverpool | 2018 |
| Psychro Fire and Security Protection Limited | Bexley | 2019 |
| Psyq Centre Limited | Camberley | 2024 |
| PT Professional Consultancy Services Ltd | Bridgwater | 2016 |
| PTA Public Sector Limited | Looe | 2013 |
| PTL Fire & Security Ltd | Lichfield | 2017 |
| Ptotect Fire Limited | London | 2023 |
| PTS Living Limited | Walsall | 2019 |
| PUB & Club Security Services Limited | Inverness | 2001 |
| Public Accountability Training Limited | Winchester | 2024 |
| Public Health Care Ltd | Barking | 2021 |
| Public Health Register | Birmingham | 2003 |
| Public Sector Partnership Services Ltd | Salford | 2010 |
| Publica Group ( Support) Limited | Cirencester | 2017 |
| Publico Limited | Peterborough | 2016 |
| Puchini Consultancy Limited | London | 2019 |
| Pulms Limited | Norwich | 2021 |
| Pulse Point Care Limited | London | 2025 |
| Pulse Safety Solutions Limited | Abertillery | 2019 |
| Pulselink-Healthcare Ltd | Croydon | 2025 |
| Pure Childcare Solutions Ltd | Slough | 2025 |
| Pure OH Limited | Rugby | 2015 |
| Purebei Limited | Poole | 2023 |