| Practically Essential Ltd | Construction | 2018 |
| Practically Moved Ltd | Administrative & support | 2011 |
| Practice Plan for Opticians Limited | Professional & scientific | 2008 |
| Practice-Bot Limited | Information & communication | 2025 |
| Praedium Homes Ltd | Real estate | 2026 |
| Pragmatically Agile Ltd | Information & communication | 2012 |
| Pravara Limited | Extraterritorial | 2023 |
| Precise Inventory Services Ltd | Real estate | 2021 |
| Precisian Ltd | Professional & scientific | 2017 |
| Precision Skin Bath Ltd | Other services | 2026 |
| Prelude Records Limited | Manufacturing | 1986 |
| Premier Construction Consultancy Ltd | Professional & scientific | 2014 |
| Premier Health (U.K.) Limited | Transport & logistics | 2003 |
| Premier MSN Ltd | Extraterritorial | 2011 |
| Premier Pilates Limited | Health & social care | 2003 |
| Prentice Wealth Management Ltd | Financial services | 2025 |
| Press Property Management Limited | Real estate | 2017 |
| Prestige Development Group Ltd | Construction | 2025 |
| Prestige Event Equipment Hire Ltd | Administrative & support | 2010 |
| Prestige Guardians Ltd | Other services | 2018 |
| Prestige Property Holdings (SW) Limited | Real estate | 2020 |
| Prestigious Consultancy Ltd | Information & communication | 2025 |
| Preston East Ltd | Construction | 2023 |
| Pretty Penny Property Ltd | Real estate | 2025 |
| Price Medical Limited | Health & social care | 2018 |
| Priddy Engineering Services Limited | Construction | 2009 |
| Priest Associates Limited | Professional & scientific | 2019 |
| Prima Stays Ltd | Real estate | 2026 |
| Primary Drive Limited | Information & communication | 1999 |
| Prime Access Limited | Construction | 2007 |
| Prime Construction (SW) Limited | Construction | 2024 |
| Primedime Limited | Real estate | 2021 |
| Primeequipment Limited | Wholesale & retail | 2026 |
| Primelocal Property Management Limited | Households | 1990 |
| Primrose Hill Community Woodland Trust | Agriculture & fishing | 1999 |
| Prince PR Limited | Professional & scientific | 2003 |
| Princeway Innovation Limited | Professional & scientific | 2024 |
| Principle Partners UK Limited | Professional & scientific | 2006 |
| Prior HR Health Recruitment Ltd | Administrative & support | 2011 |
| Prior Park Educational Trust | Education | 1980 |
| Prior Park Enterprises Limited | Education | 1988 |
| Prior Park Freehold Limited | Households | 2013 |
| Prior Park Garden Centre Limited | Extraterritorial | 2026 |
| Prior Park Holdings Limited | Education | 2015 |
| Priority One Infrastructure Limited | Information & communication | 2025 |
| Priory Vale (Nominees) Limited | Professional & scientific | 2017 |
| Priory Vale Limited | Real estate | 2003 |
| Private Practice Ninja Limited | Health & social care | 2015 |
| Prodigio Limited | Real estate | 1998 |
| Professional Golf Limited | Arts & recreation | 2017 |
| Professional Tourist Guide Training (Ptgt) Limited | Administrative & support | 2016 |
| Profex Associates Ltd. | Professional & scientific | 2002 |
| Profitsgrowth Limited | Extraterritorial | 2002 |
| Progenx Ltd | Information & communication | 2006 |
| Progress Accounting Services Ltd | Professional & scientific | 2008 |
| Project Finance Limited | Administrative & support | 2002 |
| Project Logic Limited | Professional & scientific | 2013 |
| Project N Limited | Professional & scientific | 2022 |
| Project Parnell Limited | Wholesale & retail | 2025 |
| Projects Holdings Limited | Financial services | 2018 |
| Prokits Limited | Manufacturing | 2001 |
| Proletariat Productions Ltd | Information & communication | 2024 |
| Prolific Digital Ltd | Information & communication | 2024 |
| Promising Change Ltd | Professional & scientific | 2023 |
| Promote Online Digital Ltd | Professional & scientific | 2018 |
| Propeast Limited | Professional & scientific | 2012 |
| Proper Match Property Ltd | Real estate | 2026 |
| Properteez Lettings Ltd | Real estate | 2023 |
| Properties of Bath Ltd | Real estate | 2026 |
| Property 8 Club Ltd | Real estate | 2021 |
| Property Carrot Ltd | Real estate | 2021 |
| Property Link Estates Limited | Real estate | 2008 |
| Property Management Bath Ltd | Administrative & support | 2017 |
| Property Universe Limited | Hospitality | 2016 |
| Propriety Stays Limited | Construction | 2023 |
| Prorsus Limited | Real estate | 2009 |
| Proscrew Ltd | Construction | 2019 |
| Prosecco Watch Ltd | Extraterritorial | 2018 |
| Protean Code Ltd | Information & communication | 2014 |
| Protechcomputers Ltd | Wholesale & retail | 2025 |
| Protected Area Strategy Consulting Limited | Extraterritorial | 2021 |
| Protest Electrical Solutions Ltd | Construction | 2021 |
| Proteus Business Sales & Consulting Ltd | Professional & scientific | 2012 |
| Proton Medical Ltd | Professional & scientific | 2019 |
| Prototoy Limited | Professional & scientific | 2007 |
| Provenias Ltd | Information & communication | 2017 |
| Providence Hotels Limited | Hospitality | 2016 |
| Providence Hotels Midco Limited | Financial services | 2025 |
| Providence Hotels Midco SPV1 Limited | Hospitality | 2025 |
| Providence Hotels Midco SPV2 Limited | Hospitality | 2025 |
| Providence Hotels Midco SPV3 Limited | Hospitality | 2025 |
| Providence Hotels Midco SPV4 Limited | Hospitality | 2025 |
| Providence Hotels Midco SPV5 Limited | Hospitality | 2025 |
| Providence Hotels Midco SPV6 Limited | Hospitality | 2025 |
| Providence Hotels Midco SPV7 Limited | Hospitality | 2026 |
| Providence Hotels Midco SPV8 Limited | Hospitality | 2026 |
| Providence Hotels Midco SPV9 Limited | Hospitality | 2026 |
| Provost Intelligence Limited | Information & communication | 2026 |
| Prudence Enterprises Ltd | Real estate | 2020 |
| Pryworth Limited | Professional & scientific | 2019 |