| PR IT Consulting Ltd | Information & communication | 2018 |
| Prabha Wellbeing Limited | Wholesale & retail | 2024 |
| Practical Antitrust Ltd | Professional & scientific | 2025 |
| Pratibha UK Ltd | Arts & recreation | 2017 |
| Prayuk Medicare Limited | Health & social care | 2013 |
| PRE Loved Stuff Ltd | Transport & logistics | 2020 |
| Precious Natural OIL Ltd | Manufacturing | 2020 |
| Precise Finance Systems UK Limited | Information & communication | 2023 |
| Precise Financial Systems Limited | Information & communication | 2018 |
| Precise Plumbing & GAS Limited | Construction | 2018 |
| Precision Claims Services Limited | Professional & scientific | 2026 |
| Precision Clean Solutions Ltd | Administrative & support | 2025 |
| Precision EYE Health Ltd | Health & social care | 2025 |
| Predictcare.Ai Ltd | Information & communication | 2026 |
| Preform Management Limited | Wholesale & retail | 1991 |
| Premier (UK) Property Management Limited | Real estate | 1998 |
| Premier BR1 DRY Cleaners Ltd | Other services | 2024 |
| Premier Dental & Implant Centre Ltd | Health & social care | 2022 |
| Premier Property Refurbishments Limited | Construction | 2018 |
| Pres Drink Limited | Wholesale & retail | 2025 |
| Preserve Energy Ltd | Professional & scientific | 2022 |
| Presidential Clothing Ltd | Wholesale & retail | 2026 |
| Press & Co (UK) Limited | Other services | 2019 |
| Press Start Films Limited | Information & communication | 2019 |
| Pressure Football Limited | Information & communication | 2018 |
| Prestige Bespoke Tables Ltd | Manufacturing | 2018 |
| Prestige Decorators London Ltd | Construction | 2024 |
| Prestige Home Solutions Limited | Construction | 2014 |
| Prestige Storage Ltd | Real estate | 2019 |
| Preston Hall Aylesford Management Company Limited | Professional & scientific | 2014 |
| Preston Hall Freehold Company Limited | Households | 2017 |
| Pretoria Court Freehold Limited | Real estate | 2013 |
| Prevail Tuition Limited | Education | 2019 |
| Prevention and Detection (Holdings) Limited | Real estate | 1979 |
| Priam Estates Limited | Real estate | 1953 |
| Price Psychological Consultancy Ltd | Other services | 2025 |
| Price Warton Consulting Limited | Administrative & support | 2016 |
| Primahomeholdings Limited | Real estate | 2025 |
| Primal 2 312 Ltd | Real estate | 2026 |
| Primal 76 1 Ltd | Real estate | 2026 |
| Primal 76 5 Ltd | Real estate | 2026 |
| Primary Care Workforce Academy Community Interest Company | Health & social care | 2018 |
| Primaryfuse Ltd | Construction | 2020 |
| Primaxis Consulting Ltd | Professional & scientific | 2026 |
| Prime Houseware (SE) Ltd | Wholesale & retail | 2026 |
| Prime Management (PS) Limited | Households | 2012 |
| Prime Properties OZ Ltd | Real estate | 2024 |
| Prime Reside Property Investment & Management Ltd | Households | 2024 |
| Prime Scaffold and Structural Designs Limited | Professional & scientific | 2018 |
| Prime Touch Ltd | Other services | 2021 |
| Primer Construction Ltd | Construction | 2026 |
| Primewaste Solutions Ltd | Water & waste | 2025 |
| Primula Maintenance Limited | Construction | 2026 |
| Princes Tower Residents Management Limited | Households | 1995 |
| Princess Court Freehold Limited | Households | 2005 |
| PRINT4YOU (UK) Limited | Wholesale & retail | 2013 |
| Prior Design & Consultancy Limited | Professional & scientific | 2015 |
| Prior Estates Limited | Real estate | 1984 |
| Prioritise Commerce Consultants Ltd | Professional & scientific | 2026 |
| Priority Air Conditioning Limited | Other services | 2026 |
| Priority Boiler Install & Repairs Limited | Construction | 2024 |
| Priority Drainage Ltd | Water & waste | 2025 |
| Priority Electrical and Renewables Limited | Construction | 2025 |
| Pristine London Plumbing Ltd | Construction | 2022 |
| Priya Chandy Ltd | Information & communication | 2026 |
| Priya Properties Development Ltd | Real estate | 2020 |
| Pro Journey Limited | Information & communication | 2026 |
| Pro Online Ltd | Wholesale & retail | 2015 |
| Pro-Invent Limited | Other services | 2009 |
| Pro. Palm (UK) Ltd | Wholesale & retail | 2022 |
| Probody Group Ltd | Wholesale & retail | 2025 |
| Procad Systems (UK) Limited | Information & communication | 1994 |
| PRODUCTION92 Limited | Administrative & support | 2022 |
| Professional Audio Visual Solutions Limited | Administrative & support | 2002 |
| Professional Language Services Ltd | Professional & scientific | 2020 |
| Profi-Kom Ltd | Wholesale & retail | 2012 |
| Profighter Ltd | Wholesale & retail | 2023 |
| Profitrade Ltd | Wholesale & retail | 2022 |
| Progetto Design & Build Limited | Construction | 2016 |
| Progetto Studio Limited | Construction | 2025 |
| Progress Together | Other services | 2022 |
| Progression Solutions Education Consultancy Limited | Education | 2012 |
| Progressive Fitness Partners Ltd | Wholesale & retail | 2025 |
| Progressive Fitness UK Limited | Other services | 2016 |
| Progressive Signalling Limited | Administrative & support | 2012 |
| Project 23 Works Ltd | Professional & scientific | 2018 |
| Project Cargo Shipping Limited | Transport & logistics | 2012 |
| Project II Clothing Ltd | Wholesale & retail | 2025 |
| Project Sustainability Ltd | Professional & scientific | 2012 |
| Projectronic Developments Limited | Manufacturing | 1995 |
| Prolific Player Development Ltd | Education | 2025 |
| Proluxe Ltd. | Wholesale & retail | 2016 |
| Prometheus Investment Partners Ltd | Financial services | 2022 |
| Promotor Events Limited | Administrative & support | 2004 |
| Pronexus Holdings UK Limited | Administrative & support | 2017 |
| Prop Hire Project Ltd | Wholesale & retail | 2025 |
| Propco 235HS Limited | Real estate | 2019 |
| Propelle (Network) Ltd | Education | 2019 |
| Proper Football Ltd | Information & communication | 2024 |
| Proper Lush Property Ltd | Real estate | 2020 |