| Pharmasource (UK) Ltd | Health & social care | 2001 |
| Philip Gebhard Limited | Construction | 2009 |
| PHL Property Ltd | Construction | 2019 |
| Phoenix Running Crystal Palace Ltd | Arts & recreation | 2025 |
| PHOENIX88 Investment Ltd | Financial services | 2023 |
| PHONEFIX4U Ltd. | Information & communication | 2017 |
| PI Enterprise Solutions Ltd | Real estate | 2022 |
| Pianillo Takeaway Ltd | Hospitality | 2024 |
| Picanté Pilates Ltd | Arts & recreation | 2025 |
| Pick ME UP Chauffeurs Limited | Transport & logistics | 2025 |
| Pine Mews Residents Association Limited | Households | 1963 |
| Pinnacle Freight Systems Limited | Construction | 2024 |
| Pipa Capital Limited | Wholesale & retail | 2019 |
| Pipeline Group Holdings Ltd | Construction | 2023 |
| Pipeline Plumbing & Heating Limited | Construction | 2006 |
| Pista Motors Ltd | Wholesale & retail | 2025 |
| PIT Stop Scenic Services Ltd | Other services | 2019 |
| PJ Progressive Building Ltd | Construction | 2017 |
| PJS Property Investments Ltd | Real estate | 2023 |
| Plastestrip (Profiles) Limited | Extraterritorial | 1978 |
| Plasticstockist.Com Limited | Extraterritorial | 2006 |
| Playball AR Ltd | Education | 2022 |
| Playball LM Ltd | Education | 2017 |
| Plenti Impact Ltd | Professional & scientific | 2025 |
| PNA Holdings Limited | Financial services | 2018 |
| Pntsync Limited | Professional & scientific | 2025 |
| Poleworks Group Ltd | Manufacturing | 2026 |
| Pony Grove Limited | Education | 2018 |
| Populus Pictures (UK) Limited | Information & communication | 2012 |
| Porsche Projects Ltd | Manufacturing | 2019 |
| Port Douglas Investments Limited | Real estate | 2025 |
| Portmar House & Co. Ltd | Wholesale & retail | 2026 |
| Possy Limited | Manufacturing | 2015 |
| Power in Numbers Ltd | Professional & scientific | 2006 |
| Powercomm Engineering Limited | Construction | 2020 |
| PPA Transport Services Ltd | Transport & logistics | 2015 |
| PPB Aviation Limited | Transport & logistics | 2014 |
| Pradhan Enterprises Ltd | Hospitality | 2023 |
| Pragma Labs Limited | Information & communication | 2026 |
| Pramod Kumar Real Estate Group Ltd | Real estate | 2026 |
| PRARUSA3 Ltd | Administrative & support | 2017 |
| Prasanna Limited | Professional & scientific | 2018 |
| Premier Medics Ltd | Health & social care | 2020 |
| Premier Parcel & Pallet Services Ltd | Transport & logistics | 2020 |
| Premier Squad Limited | Transport & logistics | 2019 |
| Pren Draig Ltd | Manufacturing | 2025 |
| Prestige Moving Solutions Ltd | Transport & logistics | 2025 |
| Primaflora Design and Build Ltd | Construction | 2002 |
| Prime IT Services Limited | Information & communication | 2020 |
| Prime Supreme Ltd | Information & communication | 2023 |
| Pristine Car Valeting Station Ltd | Wholesale & retail | 2026 |
| Private Limited | Extraterritorial | 2002 |
| Pro 1 Scaffolding Ltd | Construction | 2010 |
| Pro Drive Group Ltd | Transport & logistics | 2024 |
| Pro Lion Roofing & Building Ltd | Construction | 2026 |
| Pro Media Solutions Limited | Administrative & support | 2012 |
| PRO1 Materials Ltd | Water & waste | 2026 |
| Probuild Construction (Surrey) Ltd | Construction | 2024 |
| Professional Paving Services Ltd | Administrative & support | 2025 |
| Project Unparalleled Ltd | Financial services | 2025 |
| Proper Investment in Great Britain Ltd | Real estate | 2024 |
| Propertyworkz Inc Limited | Real estate | 2020 |
| Prophetic Awakening | Other services | 2023 |
| Props on SET Limited | Information & communication | 2026 |
| Proud Alien Ltd | Information & communication | 2021 |
| PRS Child Care Limited | Administrative & support | 2017 |
| Psyg Investment Limited | Real estate | 2025 |
| Puffin Management LLP | | 2023 |
| Puffin Restoration Ltd | Information & communication | 2023 |
| Puja Inventure Ltd | Administrative & support | 2016 |
| Pumpty Limited | Financial services | 2017 |
| Pure Carpet Care & Cleaning Solutions Ltd | Administrative & support | 2026 |
| Pure Design and Build Ltd | Construction | 2022 |
| Pure Eyecare Ltd | Professional & scientific | 2020 |
| Pure Misting Limited | Professional & scientific | 2020 |
| PWR PR Limited | Professional & scientific | 2019 |
| Q D Film Services Limited | Professional & scientific | 2007 |
| Quadratic Administration Limited | Administrative & support | 2001 |
| Quadratic Properties Limited | Real estate | 2008 |
| Quality EYE Care Ltd | Health & social care | 2003 |
| Quantum Business Advisory (UK) Limited | Information & communication | 2009 |
| Quantum Europoint Limited | Wholesale & retail | 2015 |
| Quarry Mount Care Limited | Health & social care | 2004 |
| R & T Rentals Ltd | Real estate | 2026 |
| R Electrical Ltd | Construction | 2009 |
| R Fleming Consultancy Limited | Administrative & support | 2006 |
| R Maysing Design & Build Limited | Construction | 2013 |
| R Sarees Ltd | Wholesale & retail | 2025 |
| R&D Professional Cleaning Ltd | Administrative & support | 2026 |
| R33DYS Limited | Construction | 2023 |
| Rachel Allcock Ltd | Transport & logistics | 2018 |
| Radford Limited | Other services | 2022 |
| RAE Property Consulting Limited | Financial services | 2024 |
| RAF Care Services Limited | Health & social care | 2017 |
| RAH Aviation Training Services Limited | Administrative & support | 2008 |
| Rainbow Painting Contractors Ltd | Construction | 2017 |
| Rainbow Property Holdings Limited | Real estate | 2021 |
| RAJ Chauffeur Ltd | Transport & logistics | 2023 |
| Range of Motion Massage Ltd | Other services | 2018 |
| Rathod & Sons Limited | Real estate | 2021 |