| Platform Consultancy Property Ltd | Real estate | 2020 |
| Platinhome Ltd | Wholesale & retail | 2009 |
| Platinum Training Limited | Professional & scientific | 2017 |
| Plaza Services Limited | Health & social care | 2017 |
| Pldrive 91 Ltd | Transport & logistics | 2018 |
| Plena Health UK Ltd | Other services | 2021 |
| Plichta Transport Limited | Transport & logistics | 2022 |
| Pliniana Pictures Limited | Information & communication | 2007 |
| PLM Automotive Consultants Limited | Extraterritorial | 2008 |
| Plum Park Holdings Ltd | Real estate | 2023 |
| Plum Park Manor Ltd | Real estate | 2023 |
| Plum Park Operations Ltd | Real estate | 2023 |
| Plumbing 2 YOU Ltd | Construction | 2020 |
| Plumtree Private Limited | Health & social care | 2025 |
| PLV Digital Limited | Wholesale & retail | 2026 |
| Pmas Consultancy Ltd | Information & communication | 2024 |
| PMD Trans Limited | Transport & logistics | 2026 |
| PMK - Plamen Pashev Ltd | Transport & logistics | 2018 |
| PMS UK European Services Ltd | Transport & logistics | 2021 |
| PN Logistics Ltd | Transport & logistics | 2012 |
| Pneu-Matic Limited | Wholesale & retail | 1997 |
| PNI Logisitics Ltd | Administrative & support | 2016 |
| PNK Retail Ltd | Wholesale & retail | 2025 |
| Podiatry Footcare Limited | Health & social care | 2009 |
| POE Lines Ltd | Transport & logistics | 2014 |
| Pogo Media Ltd. | Wholesale & retail | 2024 |
| Pokego Limited | Hospitality | 2017 |
| Pole Position Marketing LLP | | 2016 |
| Poliv Italia Import Ltd | Wholesale & retail | 2020 |
| Polrevagh Investments Limited | Agriculture & fishing | 2017 |
| Polyhandy Ltd | Wholesale & retail | 2025 |
| Pomander Interiors Limited | Professional & scientific | 2022 |
| Pooches Dog Grooming Ltd | Other services | 2023 |
| Poonah Investments Limited | Real estate | 2011 |
| Poppy Rose Care Limited | Health & social care | 2021 |
| Poppy's Pantry Ltd | Hospitality | 2026 |
| Porschebroker LHD UK Limited | Wholesale & retail | 2005 |
| Porta Logistics Ltd | Transport & logistics | 2022 |
| Posejdon Ltd | Transport & logistics | 2015 |
| Positive Float Ltd | Professional & scientific | 2019 |
| Positive Space Pictures Ltd | Information & communication | 2021 |
| Post Office and Telecommunications Christian Association Trust Limited(The) | Other services | 1971 |
| Posterkinzuk Ltd | Wholesale & retail | 2023 |
| Potter Technologies Ltd | Information & communication | 2021 |
| Potter&Mags International Limited | Wholesale & retail | 2019 |
| Pouchpack Limited | Wholesale & retail | 2017 |
| Poulton Ventures Ltd | Real estate | 2026 |
| Poutney Management Services Ltd | Hospitality | 2024 |
| Powash Limited | Wholesale & retail | 2021 |
| Powerplay TEK Limited | Arts & recreation | 2025 |
| PPF International Limited | Administrative & support | 2002 |
| PPY Properties Ltd | Real estate | 2024 |
| Praakin Technologies PVT Limited | Information & communication | 2025 |
| Practical Action | Health & social care | 1966 |
| Practical Action Consulting Limited | Professional & scientific | 1969 |
| Practical Action Pension Scheme Trustee Limited | Other services | 2022 |
| Practical Action Publishing Limited | Information & communication | 1974 |
| Practice Matters Ltd | Professional & scientific | 2011 |
| Pradhas Investments Ltd | Real estate | 2022 |
| Pradhasit Ltd | Information & communication | 2018 |
| Pragathi Infotech Limited | Information & communication | 2021 |
| Pragmatisch Solutions Private Limited | Information & communication | 2021 |
| Pramac-Generac UK Limited | Wholesale & retail | 1979 |
| Pramukh Mahant Homes Ltd | Real estate | 2018 |
| Prana Solutions Ltd | Information & communication | 2012 |
| Pranav Technologies UK Limited | Construction | 2011 |
| Prayaan Tech Solutions Limited | Information & communication | 2019 |
| Prebo Digital Ltd | Professional & scientific | 2026 |
| Precision and Research Technology Systems Limited | Manufacturing | 2021 |
| Precision Racing & Karting Academy Ltd | Education | 2022 |
| Preidys Ltd | Transport & logistics | 2025 |
| Prem Prop Ltd | Administrative & support | 2014 |
| Prem Work Limited | Administrative & support | 2020 |
| Prembest Ltd | Transport & logistics | 2020 |
| Premfixuk Ltd | Wholesale & retail | 2025 |
| Premier Contractor Management Limited | Construction | 2026 |
| Premier Damage Management Limited | Water & waste | 2016 |
| Premier Global Tutoring Limited | Education | 2024 |
| Premier Serviced Accommodation Ltd | Real estate | 2021 |
| Premier Utilities (UK) Limited | Other services | 2023 |
| Premier Work Support Holdings Limited | Professional & scientific | 2008 |
| Premier Work Support Limited | Administrative & support | 2004 |
| Premium Estates Ltd | Financial services | 2019 |
| Prepto Limited | Information & communication | 2025 |
| Presently ME Ltd | Health & social care | 2024 |
| Prestbuild Limited | Other services | 2014 |
| Prestige AA Properties Ltd | Real estate | 2024 |
| Prestige Aesthetics Lounge Ltd | Administrative & support | 2019 |
| Prestige Eagle Properties Limited | Real estate | 2024 |
| PRESTIGE4MOTOR Limited | Wholesale & retail | 2025 |
| Prestwood Software Limited | Information & communication | 1984 |
| Pricey Properties Ltd | Construction | 2025 |
| Prient Safety Ltd | Professional & scientific | 2025 |
| Prima Learning Ltd | Education | 2025 |
| Prima Lingua (UK) Limited | Information & communication | 2002 |
| Primal Transaction Consultancy Limited | Professional & scientific | 2022 |
| Prime Building Contractors Ltd | Construction | 2004 |
| Prime Nextgen Bay Ltd | Wholesale & retail | 2026 |
| Prime Personal Finance Ltd | Financial services | 2019 |
| Primecore Technology Ltd | Information & communication | 2026 |