| Pluto Parcels LLP | | 2015 |
| Pmelville Ltd | Other services | 2022 |
| PMI Commercial Ltd | Wholesale & retail | 2015 |
| Pmis Associates Ltd | Construction | 2018 |
| PMJ Audio Visual Ltd | Professional & scientific | 2021 |
| PNM Electrical Ltd | Construction | 2011 |
| PNS Global Consulting Ltd | Professional & scientific | 2025 |
| POD Group Services Limited | Real estate | 2017 |
| Pogue Mahone Limited | Arts & recreation | 1985 |
| Point Fine Limited | Wholesale & retail | 2024 |
| Pointens Limited | Administrative & support | 2014 |
| Pollington Green Ltd | Arts & recreation | 2012 |
| Pomoco LLP | | 2011 |
| Pond House Management Company Limited | Households | 2003 |
| Pondstead Ltd | Information & communication | 2024 |
| Pool(Gb) Ltd. | Real estate | 2019 |
| Popcoins Ltd | Hospitality | 2025 |
| Poppadom-Enfield Ltd | Hospitality | 2018 |
| Poppinga Ltd | Real estate | 2021 |
| Popsox Ltd | Wholesale & retail | 2026 |
| Popular Baths Limited | Arts & recreation | 2023 |
| Porthminster 1 Ltd | Real estate | 2019 |
| Porthminster 2 Ltd | Real estate | 2022 |
| Porthminster 3 Ltd | Real estate | 2022 |
| Porthminster Investments Ltd | Construction | 2014 |
| Porthminster London Ltd | Construction | 2018 |
| Porthminster Ltd | Construction | 2009 |
| Portobello Rights Limited | Administrative & support | 2009 |
| Portswood Centre Ltd | Real estate | 2018 |
| Positive Garden Ltd | Professional & scientific | 2013 |
| Potion Limited | Information & communication | 2003 |
| Potter Mills Ltd | Professional & scientific | 2025 |
| Poultry Pros Limited | Agriculture & fishing | 2022 |
| Poverella Productions Ltd | Arts & recreation | 2026 |
| Power B Consulting Ltd | Professional & scientific | 2025 |
| Power Investments Holdings Ltd | Real estate | 2018 |
| Power Investments Limited | Real estate | 1970 |
| Power System Commissioning Limited | Energy | 2015 |
| Power-Net Distributors Limited | Administrative & support | 1999 |
| Powerplant Aero Consultancy Ltd | Professional & scientific | 2018 |
| Powertech Services Ltd | Information & communication | 1996 |
| Powervibe Fitness Studios Ltd | Arts & recreation | 2008 |
| Powys 2025 Ltd | Real estate | 2025 |
| Prabsk Ltd | Professional & scientific | 2025 |
| Praemium Intentus | Information & communication | 2014 |
| Pranzy Admiral Heathcare Ltd | Health & social care | 2025 |
| PRC Hi-Fi & Video Limited | Wholesale & retail | 1980 |
| Precis Digital Limited | Professional & scientific | 2017 |
| Precision Energy Reports Limited | Other services | 2024 |
| Prelude Consulting Limited | Extraterritorial | 1994 |
| Premier Caterers International (UK) Limited | Hospitality | 2012 |
| Premier Laser Clinic (UK) Ltd | Other services | 2009 |
| Premier Signature London Ltd | Hospitality | 2015 |
| Premier Signature Ltd | Hospitality | 2012 |
| Premium Brand Distributors Limited | Financial services | 2003 |
| Premium Preloved Ltd | Wholesale & retail | 2026 |
| Premium Steam Clean Ltd | Other services | 2023 |
| Prenga Homes Ltd | Real estate | 2025 |
| Prenga Limited | Construction | 2017 |
| Prenga Trades Ltd | Wholesale & retail | 2025 |
| Prestige Building & Conversions Ltd | Construction | 2023 |
| Prestige Plumbing 24/7 Ltd | Construction | 2016 |
| Prestige Whitening Ltd | Health & social care | 2020 |
| Prestiige Hand Car Wash Ltd | Other services | 2023 |
| Preston Cyber Security Limited | Information & communication | 2023 |
| Prilog Ltd | Wholesale & retail | 2020 |
| Primateria Ltd | Other services | 2017 |
| Prime Analytics Consulting Limited | Information & communication | 2022 |
| Prime Building Solutions & Services Ltd | Other services | 2024 |
| Prime Cabs Executive Limited | Transport & logistics | 2026 |
| Prime Entry Ltd | Wholesale & retail | 2026 |
| Prime Financial Advisory Ltd | Professional & scientific | 2023 |
| Prime FIX Group Ltd | Construction | 2025 |
| Prime Health Solutions Limited | Information & communication | 2023 |
| Prime Needle Ltd | Health & social care | 2025 |
| Prime Portfolio Properties Ltd | Real estate | 2025 |
| Prime Resources Ltd | Transport & logistics | 2016 |
| Prime Spectrum Solutions Limited | Wholesale & retail | 2024 |
| Prime Trajectory Ltd | Professional & scientific | 2025 |
| Prime Vehicle Solutions (London) Ltd | Wholesale & retail | 2021 |
| Primecraft Joinery Limited | Manufacturing | 2024 |
| Primedealuk Ltd | Wholesale & retail | 2026 |
| Primegsearch Limited | Professional & scientific | 2019 |
| Primera Property Limited | Real estate | 2023 |
| Primestar Limited | Real estate | 2012 |
| Prince Albert Drive Limited | Professional & scientific | 2021 |
| Prince Investments Limited | Financial services | 1995 |
| Prinvern Limited | Wholesale & retail | 2024 |
| Priory Court Residents Association Limited | Households | 1987 |
| Priory Grange (Hatfield Peverel) Management Company Limited | Households | 2020 |
| Pristelle Limited | Wholesale & retail | 2025 |
| Private Capital House Limited | Financial services | 2025 |
| PRM Recruitment Limited | Administrative & support | 2017 |
| Pro Aspect Ltd | Manufacturing | 2022 |
| Pro Build London Ltd | Construction | 2025 |
| Pro Electrical Services Limited | Construction | 2002 |
| Pro London Residential Limited | Real estate | 2022 |
| Pro Quantum Solutions Ltd | Construction | 2006 |
| Pro Secure Solutions Ltd | Administrative & support | 2015 |
| Pro-Balance Accounting Limited | Professional & scientific | 2022 |