| Pmbs Holding Limited | Financial services | 2014 |
| PMG Worldwide Limited | Wholesale & retail | 1993 |
| Pmgw Investment Limited | Financial services | 2025 |
| PMJ Electrical & Fire Ltd | Construction | 2019 |
| PMK Tyres Ltd | Wholesale & retail | 2018 |
| PNB Sweets Ltd | Hospitality | 2025 |
| PNK Group (UK) Limited | Professional & scientific | 2024 |
| PNP - Pesa Nasha Pyar Ltd | Wholesale & retail | 2022 |
| PNP UK Enterprises Limited | Wholesale & retail | 2024 |
| PO Housing Limited | Households | 2026 |
| Podq Limited | Manufacturing | 2022 |
| Point Estimation Ltd | Information & communication | 2018 |
| POINT0LABS Ltd | Information & communication | 2018 |
| Polar Diagnostics LLP | | 2009 |
| Polaris Group UK Ltd | Administrative & support | 2025 |
| Pole IT Ltd | Information & communication | 2019 |
| Polerare Ltd | Financial services | 2024 |
| Polish Removers & Storers Ltd | Transport & logistics | 2021 |
| Polish Traditional Foods Ltd | Hospitality | 2015 |
| Pollux Group Ltd | Administrative & support | 2019 |
| Polski Sklep Ltd | Wholesale & retail | 2014 |
| Polski Sklep Smaczek (High Wycombe) Ltd | Wholesale & retail | 2009 |
| Polski Sklep Smaczek (Reading) Limited | Wholesale & retail | 2011 |
| Polski Sklep Smaczek Ltd | Wholesale & retail | 2008 |
| Polycell Products Limited | Professional & scientific | 1971 |
| Ponder Design & Develop Ltd | Construction | 2025 |
| Poonam Kaur Ltd | Information & communication | 2024 |
| Poornima Organics Ltd | Agriculture & fishing | 2025 |
| Popa Expedition Ltd | Water & waste | 2025 |
| Poppins of London Limited | Other services | 2015 |
| Poppy Cooks Ltd | Professional & scientific | 2024 |
| Portico Property Maintenance Ltd | Construction | 2006 |
| Portland Building Contractors Ltd | Construction | 2011 |
| Portotrans Ltd | Transport & logistics | 2015 |
| Posh Bloom Ltd | Wholesale & retail | 2025 |
| Positive Communications London Limited | Wholesale & retail | 2021 |
| Positive Elevator Services Ltd | Manufacturing | 2021 |
| Positive Links Community CIC | Health & social care | 2020 |
| Positive Locksmiths Ltd | Manufacturing | 2014 |
| Pospixel Ltd | Manufacturing | 2008 |
| Postgrad Consultant Ltd | Professional & scientific | 2025 |
| Postmill (UK) Limited | Construction | 2015 |
| Postnsgb Ltd | Public administration | 2020 |
| Potato Express Ltd | Hospitality | 2020 |
| Pottersway Care Home Limited | Health & social care | 2023 |
| Pound Ground Ltd | Transport & logistics | 2021 |
| Pound Trees Ltd | Wholesale & retail | 2022 |
| Poundcloud Limited | Wholesale & retail | 2020 |
| Povey & Povey Ltd | Professional & scientific | 2014 |
| Powell Civils Limited | Construction | 2014 |
| Power Grizzly Ltd | Information & communication | 2014 |
| Power Management Solutions Ltd. | Professional & scientific | 2016 |
| Power Surge Nutrition Limited | Wholesale & retail | 2024 |
| Power to Networks Ltd | Construction | 2020 |
| Poweractive Limited | Construction | 2003 |
| Powertrans Ltd | Transport & logistics | 2025 |
| Poxo Ltd | Wholesale & retail | 2026 |
| Poyter Ltd. | Administrative & support | 2018 |
| PP Building Services Ltd | Construction | 2016 |
| Pppv Ltd | Administrative & support | 2022 |
| PPX Motorworks Ltd | Information & communication | 2026 |
| PPX Trading Ltd | Real estate | 2023 |
| PR Industrial Concrete Ltd | Construction | 2026 |
| Prabhjeet Singh Ltd | Construction | 2024 |
| Prabhu Properties Ltd | Real estate | 2021 |
| Pradi Solutions Ltd | Information & communication | 2020 |
| Praeses Ltd | Information & communication | 2016 |
| Pragmatic Technologies Limited | Information & communication | 2011 |
| Prajay Properties Limited | Real estate | 2025 |
| Prakash Consultancy Limited | Information & communication | 2022 |
| Prakrish Solutions Ltd | Information & communication | 2024 |
| Prasad Highways Limited | Professional & scientific | 2014 |
| Prasainfotech Ltd | Information & communication | 2019 |
| Prasana Ltd | Administrative & support | 2020 |
| Prashar Healthcare Ltd | Health & social care | 2020 |
| Prashar Homes Ltd | Real estate | 2021 |
| Pratac Health Care Limited | Health & social care | 2018 |
| Pravi Solutions Ltd | Information & communication | 2023 |
| Pravish Properties PVT Ltd | Real estate | 2022 |
| PRE Infinite Ltd | Wholesale & retail | 2023 |
| Precious Denstel Services Limited | Administrative & support | 2009 |
| Precious Thoughts Ltd | Arts & recreation | 2023 |
| Precision Establishments Ltd | Construction | 2025 |
| Precision Landscaping & Home Improvements Ltd | Administrative & support | 2024 |
| Precision Pharma Ltd | Wholesale & retail | 2024 |
| Precision Therapy and Fitness Ltd | Health & social care | 2022 |
| Precisionpoint Software Limited | Information & communication | 2002 |
| Preet Pannu Haulier Ltd | Transport & logistics | 2025 |
| Preet Services Ltd | Transport & logistics | 2016 |
| Preet Solutions Ltd | Information & communication | 2017 |
| Preet Uppal Ltd | Transport & logistics | 2024 |
| Preety Bakes Ltd | Extraterritorial | 2021 |
| Premier Brains Advisory Limited | Professional & scientific | 2026 |
| Premier Car Wash Limited | Wholesale & retail | 2026 |
| Premier Drylining Ltd | Construction | 2018 |
| Premier Farms Ltd | Administrative & support | 2024 |
| Premier Health Solutions Ltd | Health & social care | 2019 |
| Premier MBP Limited | Manufacturing | 2014 |
| Premier Painters Ltd | Construction | 2025 |
| Premier Passenger Transfer Services Ltd | Transport & logistics | 2024 |