| Ppsv Limited | Education | 2013 |
| Pratik Shah Ltd | Health & social care | 2009 |
| Precise A.V. Limited | Manufacturing | 2008 |
| Precision Electric Services (Chalfont) Limited | Construction | 2003 |
| Premier Food & Wine (UK) Limited | Wholesale & retail | 2011 |
| Premier Red Property Limited | Real estate | 2012 |
| Prescient Growth Ltd | Information & communication | 2023 |
| Preservation - AD1 Limited | Professional & scientific | 2013 |
| Preservation Holdings Limited | Professional & scientific | 2013 |
| Pressbeau (Beds.) Limited | Health & social care | 2013 |
| Pressbeau Care Services Limited | Health & social care | 2018 |
| Pressbeau Holdings Limited | Financial services | 2021 |
| Pressbeau Limited | Health & social care | 1984 |
| Prestige Heating & Plumbing Limited | Construction | 1999 |
| Prestige Mobile Car Valeting Ltd | Wholesale & retail | 2019 |
| Prime Bricks Consultancy Ltd | Professional & scientific | 2021 |
| Prime Value Software Limited | Information & communication | 2025 |
| Priority Management Associates Limited | Information & communication | 2002 |
| Priory Park Care Ltd | Health & social care | 2020 |
| Prism RE Limited | Financial services | 2009 |
| Proactive Martial Arts Club Ltd | Arts & recreation | 2025 |
| Proactive Martial Arts Ltd | Arts & recreation | 2022 |
| Procure Worldwide Ltd | Other services | 2019 |
| Product IQ Limited | Information & communication | 2021 |
| Product PIX Ltd | Information & communication | 2026 |
| Production Studio Limited | Administrative & support | 2007 |
| Progress Plumbing Ltd | Construction | 2024 |
| Project Perfection Ltd | Construction | 2013 |
| Prologix BTL Limited | Real estate | 2024 |
| Prologix Limited | Information & communication | 1993 |
| Pronics Solutions Ltd | Information & communication | 2010 |
| Propcraft Limited | Other services | 2013 |
| Properties 4 ALL Seasons Limited | Real estate | 2025 |
| Prophet Omega Limited | Information & communication | 2021 |
| Propstar Productions Limited | Other services | 2018 |
| Prosper Mortgage Solutions Limited | Financial services | 2025 |
| Prosper Psychology Ltd | Health & social care | 2022 |
| Protectify Limited | Financial services | 2024 |
| Proven Property Developments Limited | Real estate | 2025 |
| Proven Property Holdings Ltd | Construction | 2026 |
| Proventures Media Rentals Ltd | Administrative & support | 2026 |
| Prozame Limited | Health & social care | 2024 |
| Pruzame Ltd | Information & communication | 2014 |
| PSB Consultancy Ltd | Professional & scientific | 2026 |
| Psme Limited | Professional & scientific | 2018 |
| Psychling Health Ltd | Health & social care | 2022 |
| PT Sportscars Ltd | Wholesale & retail | 2013 |
| PTJ (UK) Limited | Information & communication | 2005 |
| Public Health Action Support Team CIC | Health & social care | 2008 |
| Pudz Productions Limited | Other services | 2012 |
| Pulse Pilatesx Limited | Arts & recreation | 2025 |
| Punjabi Circle International Limited | Other services | 2014 |
| Pura Vida Builders Ltd | Construction | 2023 |
| Pure Football Opportunities Ltd | Health & social care | 2012 |
| Pure Logic Charters Ltd | Professional & scientific | 2018 |
| Purewal Family Investments Limited | Financial services | 2021 |
| Purple Marketing Limited | Professional & scientific | 2021 |
| Purple Star GX Ltd | Other services | 2022 |
| Purple Turtle Media Ltd | Information & communication | 2023 |
| Purton Court (Farnham Royal) Limited | Real estate | 1972 |
| Puttiq Ltd | Manufacturing | 2026 |
| Puzzlewood Construction & Carpentry Limited | Construction | 2020 |
| PWH Wealth Group UK Ltd | Financial services | 2022 |
| Pythagoras Capital Limited | Financial services | 2012 |
| Pythagoras Recoveries Limited | Financial services | 2023 |
| Q-Hr Limited | Administrative & support | 2017 |
| Qcurb Build Ltd | Construction | 2018 |
| Qidanchi Ltd | Professional & scientific | 2018 |
| Quad Consulting Limited | Professional & scientific | 2006 |
| Quadra Strat Limited | Information & communication | 2022 |
| Quadworks Software Limited | Information & communication | 1997 |
| Quaisr Limited | Information & communication | 2020 |
| Qualitube Trading Limited | Extraterritorial | 2017 |
| Quality Care Housing Ltd | Professional & scientific | 2023 |
| Quality Endo Limited | Health & social care | 2019 |
| Quality Homes Management Limited | Real estate | 2008 |
| Quantum Digital Marketing Limited | Professional & scientific | 2025 |
| Quarterre Studio Ltd | Professional & scientific | 2018 |
| Quayside Property Limited | Professional & scientific | 2021 |
| QUE Vida, LA Vida Productions Limited | Information & communication | 2014 |
| Queensgate Bracknell Ltd | Real estate | 2016 |
| Quest Marine Towage Ltd | Transport & logistics | 2018 |
| Quick Drop Logistics Ltd | Transport & logistics | 2018 |
| Quidita Ltd | Information & communication | 2022 |
| Quiet Wolf Ltd | Information & communication | 2026 |
| Quietcircle Ltd | Professional & scientific | 2026 |
| Quietfield Limited | Construction | 2002 |
| Quill Comms Limited | Information & communication | 2017 |
| Qwest Gaming Ltd | Information & communication | 2023 |
| QZ Investments Limited | Health & social care | 2024 |
| R & F Restaurants Soho Limited | Hospitality | 2020 |
| R Bird Building Services Limited | Construction | 2019 |
| R E Webb Company Limited | Construction | 1999 |
| R J P Associates Limited | Real estate | 1997 |
| R&D JOL Investments Limited | Real estate | 2018 |
| R&K Juneja Limited | Real estate | 2020 |
| R&R Properties (South) Ltd | Real estate | 2021 |
| R&Rw Homes Limited | Construction | 2021 |
| R&S Dhillon Services Ltd | Health & social care | 2015 |
| R. M. J Properties Ltd | Real estate | 2013 |