| Phyla Earth Limited | Professional & scientific | 2020 |
| Phyla Regeneration Systems Limited | Professional & scientific | 2020 |
| Phyla Tech Limited | Agriculture & fishing | 2021 |
| Phyla UPM Jvco Limited | Financial services | 2024 |
| Physiofithollie Ltd | Health & social care | 2024 |
| Piccadilly Estates International Ltd | Construction | 2024 |
| Piccolino Fine Art Limited | Arts & recreation | 2009 |
| Pickled PUB Group Ltd | Hospitality | 2025 |
| Picturebank Photo Library Limited | Arts & recreation | 1983 |
| Piers Meadows Recruitment Limited | Administrative & support | 2003 |
| Piggy & Partners Limited | Professional & scientific | 2021 |
| Pilar House Ltd | Real estate | 2025 |
| Pilove Limited | Hospitality | 2022 |
| PINE3 Ltd | Real estate | 2011 |
| Pineapple Pizza Limited | Professional & scientific | 2025 |
| Pinetree Property Freehold Limited | Financial services | 2024 |
| Ping ANG Ltd | Arts & recreation | 2025 |
| Ping Kang Ltd | Health & social care | 2016 |
| Pink Blossom Ltd | Information & communication | 2013 |
| Pink Garlic Kingston Ltd | Hospitality | 2017 |
| Pinposh Ltd. | Wholesale & retail | 2025 |
| Pioneer Founds UK Limited | Financial services | 2025 |
| Pipeline Masters Limited | Information & communication | 2025 |
| Pippin Moss Productions Limited | Information & communication | 2026 |
| Piron Group Limited | Professional & scientific | 2017 |
| Pitch Hill Partners Limited | Information & communication | 2019 |
| Pitt Place Residents Association Limited | Households | 2002 |
| Pivot Point Finance Ltd | Professional & scientific | 2025 |
| Pivotal Moment Transitions Limited | Administrative & support | 2012 |
| Pixal Ltd | Information & communication | 2011 |
| Pixel Finish Post Production Limited | Information & communication | 2025 |
| Pixit Media Limited | Administrative & support | 2010 |
| Pizza BRO Ltd | Other services | 2019 |
| Pizzamia Limited | Hospitality | 2021 |
| PJD Health Ltd | Health & social care | 2025 |
| PJL Carpentry & Building Limited | Construction | 2025 |
| PJM Electrical Consulting Limited | Construction | 2019 |
| PJR Consultants Limited | Professional & scientific | 2009 |
| PJW Property Management Ltd | Construction | 2020 |
| Plan Apex Limited | Real estate | 2023 |
| Planet Systems and Consulting Limited | Information & communication | 2002 |
| Plant Based Kids Ltd | Hospitality | 2021 |
| Plants for Europe Limited | Professional & scientific | 2003 |
| Plassey Road Management Company Limited | Households | 2007 |
| Plastermind Limited | Construction | 2022 |
| Plastic Milk Limited | Information & communication | 2013 |
| Platinum Corp. Ltd. | Real estate | 2015 |
| Platinum Corporations Ltd | Hospitality | 2026 |
| Platinum Financial Planning & IFA Limited | Financial services | 2015 |
| Platinum INT. LLP | | 2015 |
| Play That Back Limited | Other services | 2015 |
| Playtime Camps Ltd | Arts & recreation | 2026 |
| Playtime Padel Ltd | Arts & recreation | 2024 |
| Plceurope Limited | Wholesale & retail | 2012 |
| Plci Limited | Construction | 1995 |
| Pleasance Investments Limited | Financial services | 2025 |
| Pletura Limited | Professional & scientific | 2014 |
| Plexus Projects Limited | Information & communication | 2008 |
| Plim Cooperation Ltd | Extraterritorial | 2014 |
| Plim Holding Ltd | Extraterritorial | 2015 |
| Plus House Limited | Construction | 2025 |
| Plyr Media Ltd | Other services | 2023 |
| PMW Events Ltd | Hospitality | 2023 |
| PNS (PVT) Limited | Real estate | 2019 |
| POD Rent Ltd | Wholesale & retail | 2023 |
| Podd Sound Limited | Administrative & support | 2003 |
| Pogo Group Ltd | Financial services | 2026 |
| POINT3 Software Limited | Information & communication | 2010 |
| Pointstand Carpentry Solutions Limited | Extraterritorial | 2007 |
| Poke Craft Ltd | Hospitality | 2025 |
| Polar Bear Live Limited | Arts & recreation | 2012 |
| Polar White Investments Limited | Real estate | 2013 |
| Polegal Limited | Other services | 2014 |
| Polish Hussars Ltd | Construction | 2023 |
| Polo Capital Management Ltd | Professional & scientific | 2025 |
| Polvino Store Ltd | Wholesale & retail | 2025 |
| Polyglot Limited | Information & communication | 2025 |
| Pomegranate Bistro Ltd | Hospitality | 2023 |
| Pontifex BR Limited | Financial services | 2020 |
| Poppet's Childcare Ltd | Education | 2011 |
| Porritt Consulting Limited | Professional & scientific | 2010 |
| Portcullis AMO Limited | Extraterritorial | 2014 |
| Portcullis PUB Co Limited | Hospitality | 2018 |
| Positive View Limited | Professional & scientific | 1995 |
| Possessed Music Box Ltd | Arts & recreation | 2020 |
| Possible Green Ltd | Wholesale & retail | 2015 |
| Potens Limited | Professional & scientific | 1988 |
| Potential Group Ltd | Information & communication | 2017 |
| Potion Sauces Limited | Manufacturing | 2024 |
| Potter Worx Ltd | Manufacturing | 2025 |
| Pottery Bar LLP | | 2015 |
| Pottery Tapas Bar Ltd | Hospitality | 2024 |
| Powell and Mitchell Associates Limited | Information & communication | 2015 |
| Poynders Freehold Limited | Households | 2024 |
| Ppdl (Southend) Limited | Real estate | 2006 |
| Ppgb Solutions Limited | Professional & scientific | 2011 |
| Ppua Limited | Professional & scientific | 2014 |
| PR Legal & Contractual Services Ltd | Professional & scientific | 2025 |
| Pracsys Security Consulting Limited | Information & communication | 2018 |
| Practical Wealth Creation Ltd | Extraterritorial | 2011 |