| Pilgrim 4 Ukrainian Kids C.I.C. | Administrative & support | 2023 |
| Pilot Your Future CIC | Education | 2025 |
| PIN Mill Design Limited | Professional & scientific | 2022 |
| Ping Technologies Ltd | Information & communication | 2026 |
| Pinnacle Financial Contracts Limited | Financial services | 1998 |
| Pinnacle Printing & Stationery Ltd | Manufacturing | 2011 |
| Pinpoint LDN Limited | Transport & logistics | 2026 |
| Pinto O Limited | Information & communication | 2019 |
| Pioneer Health Care Services Limited | Health & social care | 2023 |
| Piped to Perfection Ltd | Construction | 2021 |
| Piperight Plumbing Ltd | Construction | 2026 |
| Pishon Global Ltd | Real estate | 2023 |
| Pison Accountancy Training Limited | Education | 2020 |
| Pison Lexhaus Ltd | Professional & scientific | 2025 |
| Pison Properties Limited | Real estate | 2020 |
| Pisons Resources Ltd | Administrative & support | 2020 |
| Pitt Property Group Ltd | Real estate | 2024 |
| Pitts-Webster Acquisitions Limited | Professional & scientific | 2026 |
| Pitts-Webster Developments Limited | Construction | 2026 |
| Pitts-Webster Property Limited | Construction | 2025 |
| Pixelpros Advertising Ltd | Professional & scientific | 2024 |
| Pizza Pimp & Burger Babe Limited | Hospitality | 2025 |
| PJB Management Services Ltd | Administrative & support | 2016 |
| PJD Motors Ltd | Wholesale & retail | 2023 |
| PJN Care Ltd | Public administration | 2019 |
| PJP Property Limited | Real estate | 2016 |
| PJW Electrical Limited | Construction | 2021 |
| PK Haulage Ltd | Transport & logistics | 2018 |
| PL3 Ltd | Construction | 2025 |
| Place to Place Carriers Limited | Transport & logistics | 2023 |
| Placement Box Ltd | Wholesale & retail | 2023 |
| Plainpaper Care Services Ltd | Health & social care | 2020 |
| PLAN2SHOP Ltd | Wholesale & retail | 2022 |
| Planet Pizza & Chicken Ltd | Hospitality | 2025 |
| Planned Maintenance (Kent) Ltd | Construction | 2021 |
| Planning Support Service Ltd | Construction | 2020 |
| Planr Financial Planning Limited | Financial services | 2022 |
| Plantline UK Ltd | Wholesale & retail | 2019 |
| Platform 24 Limited | Health & social care | 2026 |
| Platform 26 Padel Limited | Arts & recreation | 2025 |
| Platinum Events Ltd | Administrative & support | 2019 |
| Platinum Living Care Limited | Health & social care | 2020 |
| Platinum Residential Care (UK) Ltd | Households | 2020 |
| Platinum Tool Care Ltd | Manufacturing | 2025 |
| Platoon Stores Limited | Wholesale & retail | 2010 |
| Plaxtol Investments Limited | Real estate | 1986 |
| Plaxtol Management Services Limited | Professional & scientific | 1997 |
| Play Like a Pro Football Academy CIC | Education | 2023 |
| Play on Purpose Occupational Therapy Ltd | Health & social care | 2025 |
| Pleasant & Green Accountancy Ltd | Professional & scientific | 2013 |
| Pleasant & Green Estates Ltd | Real estate | 2014 |
| Plum Bro's Ltd | Wholesale & retail | 2019 |
| Plumb Wright Services Ltd | Construction | 2017 |
| Plumbros Properties Limited | Real estate | 2026 |
| Plumbtech Kent Limited | Construction | 2017 |
| Plumwood Inter Group Services Ltd | Real estate | 2017 |
| Plumwood Limited | Professional & scientific | 2009 |
| Plus 8 Properties Ltd | Real estate | 2025 |
| PLUS7 Properties Limited | Real estate | 2018 |
| Pluscoreenergy Limited | Professional & scientific | 2026 |
| Plusu Ltd | Wholesale & retail | 2022 |
| PMB Devine Limited | Wholesale & retail | 2020 |
| PML Plumbing & Heating (Sussex) Ltd | Construction | 2022 |
| PNG One Solution Ltd | Real estate | 2014 |
| PNJ Consulting Limited | Professional & scientific | 2003 |
| Pnmp Limited | Information & communication | 1986 |
| PNN Healthcare Ltd | Health & social care | 2025 |
| Pocket Caddy Limited | Information & communication | 2026 |
| Poco Loco (Kent) Ltd. | Hospitality | 2016 |
| Poco Loco Music Bar Ltd | Hospitality | 2024 |
| Poco Loco on Tour Ltd | Hospitality | 2024 |
| Podkin Limited | Real estate | 2013 |
| Pointaccess Limited | Construction | 1996 |
| Polar Plastering Ltd | Construction | 2023 |
| Pooma Fuel Limited | Wholesale & retail | 2019 |
| POP Supernova Ltd | Education | 2026 |
| Pop-Up Property Limited | Real estate | 2025 |
| Pope Plant Limited | Administrative & support | 2003 |
| Porsh Nurturing Nook Ltd | Education | 2026 |
| Portal Trading Ltd | Professional & scientific | 2026 |
| Portnall Properties Limited | Construction | 2013 |
| Positive Construction Ltd | Construction | 2020 |
| Positive Performance Consulting Limited | Administrative & support | 2026 |
| Positively ME Kids Coaching Ltd | Health & social care | 2024 |
| Powell Collective Ltd | Other services | 2025 |
| Powercut Events Ltd | Professional & scientific | 2024 |
| Powered Installations Limited | Other services | 2011 |
| Powerlift March Limited | Manufacturing | 2003 |
| Powerplan Limited | Construction | 2012 |
| Powerstone Estates Ltd | Real estate | 2026 |
| Powertrainr Ltd | Arts & recreation | 2026 |
| PP UK Services Ltd | Construction | 2017 |
| PPC Medway Ltd | Hospitality | 2024 |
| Ppps Care and Support Services Limited | Administrative & support | 2014 |
| PR Surfacing Limited | Construction | 2021 |
| Practical GAS Ltd | Energy | 2015 |
| Prammel Limited | Professional & scientific | 2023 |
| Prayer and Liberation Ministry Limited | Other services | 2023 |
| Pre-Met Holdings Limited | Professional & scientific | 2004 |
| Precise Placements Ltd | Administrative & support | 2009 |