| PLB Consultancy and Trading Ltd | Wholesale & retail | 2024 |
| PLB Plumbing and Heating Limited | Construction | 2021 |
| Pleasant Property Ltd | Real estate | 2017 |
| Pleuvoir Limited | Wholesale & retail | 2025 |
| Plexor Consulting Limited | Professional & scientific | 1999 |
| PLM Projects Ltd | Construction | 2020 |
| Plumbear London Ltd | Construction | 2025 |
| Plumbworx Services Ltd | Construction | 2016 |
| Pluris Consulting Limited | Professional & scientific | 2009 |
| Plus Four International Limited | Professional & scientific | 1990 |
| Plusform Limited | Administrative & support | 2002 |
| Pluto Technologies Ltd | Information & communication | 2022 |
| Plutus Accountants Limited | Professional & scientific | 2022 |
| Plutus Insurance Consultants Limited | Financial services | 2022 |
| PLV Holdings Limited | Financial services | 2015 |
| PLV Properties Limited | Real estate | 2011 |
| PM Tech Consulting Limited | Information & communication | 2010 |
| PM Tech Properties Ltd | Real estate | 2019 |
| PMB Care Limited | Health & social care | 2018 |
| Pmbb Estates Ltd | Real estate | 2024 |
| Pmss Properties Ltd | Real estate | 2024 |
| Pmtk Properties Ltd | Real estate | 2022 |
| PN Controls Services Limited | Construction | 2016 |
| Pnat Consulting Ltd | Professional & scientific | 2022 |
| PNB Global Ltd. | Wholesale & retail | 2016 |
| PND Structures Ltd | Extraterritorial | 2018 |
| Pndr Limited | Real estate | 2025 |
| PO Girl Limited | Wholesale & retail | 2017 |
| Point 6 Media Ltd | Information & communication | 2016 |
| Poku Pharma Ltd | Wholesale & retail | 2013 |
| Polar Media House Limited | Information & communication | 2019 |
| Polar PM Ltd | Professional & scientific | 2004 |
| Polaris Law Solicitors Ltd | Professional & scientific | 2023 |
| Polaris WEB3 Solutions Ltd | Professional & scientific | 2024 |
| Polaska Assets Limited | Real estate | 2022 |
| Polbuild Limited | Construction | 2020 |
| Pole to Pole Challenges Limited | Administrative & support | 2024 |
| Policywave Limited | Financial services | 2016 |
| Polished Nail Bucks Ltd | Other services | 2026 |
| Polly Medical Ltd | Health & social care | 2023 |
| Polmac (UK) Limited | Wholesale & retail | 1998 |
| Polo Consultancy Ltd | Professional & scientific | 2023 |
| Polo Pony Power LLP | | 2015 |
| Poltek Communications Limited | Information & communication | 2001 |
| Polyatrics Limited | Professional & scientific | 2022 |
| Poma Transformation Ltd | Financial services | 2016 |
| Pomme Consultants Ltd | Information & communication | 2020 |
| Pomme Pubs Ltd | Hospitality | 2025 |
| Ponybox Limited | Professional & scientific | 2011 |
| Pooches Retreat Ltd | Other services | 2017 |
| Popcorn Serviced Accommodation Limited | Real estate | 2017 |
| Poplars Resource Management Company Limited | Water & waste | 1991 |
| Poppy Almond Design Ltd | Arts & recreation | 2025 |
| Poppyfields (Benwick) Residents Association Limited | Extraterritorial | 2006 |
| Pops Property Care Ltd | Administrative & support | 2025 |
| Porsch Kitchen & Bedrooms Ltd | Construction | 2021 |
| Portaprompt Limited | Manufacturing | 1976 |
| Portaprompt Trustee Ltd | Professional & scientific | 2026 |
| Porter Channing Investments Limited | Real estate | 2015 |
| Porter-Gray Property Investment UK Limited | Real estate | 2023 |
| Portland Wexford Group Ltd | Health & social care | 2025 |
| Portsmouth Communications Limited | Information & communication | 1999 |
| Portway Drive Limited | Real estate | 2004 |
| Poseidon Heating Ltd | Construction | 2019 |
| Posh Hippy Property Ltd | Real estate | 2026 |
| Positive Community Finance Ltd | Professional & scientific | 2020 |
| Positive Curve Consulting Limited | Professional & scientific | 2025 |
| Positive I.T. Limited | Extraterritorial | 2007 |
| Positive Impact Fitness Ltd | Arts & recreation | 2007 |
| Positive Strength BJJ Ltd | Arts & recreation | 2022 |
| Positive Well Being Association | Health & social care | 2019 |
| Posperity Ltd | Wholesale & retail | 2023 |
| Post Parcel Depot Ltd | Transport & logistics | 2011 |
| Postcode Estates Ltd | Real estate | 2025 |
| Postmark Residents Management Company Limited | Households | 2020 |
| Posy & Alex Ltd | Construction | 2021 |
| Potentiality UK Ltd | Information & communication | 2010 |
| Pottalkaadu UK Ltd | Professional & scientific | 2024 |
| Poulton Electrical Limited | Construction | 2026 |
| Power in Grace Yoga Ltd | Arts & recreation | 2024 |
| Power Pilates UK Limited | Arts & recreation | 2014 |
| Powercom Electrical Services Limited | Construction | 1998 |
| Powergrid Limited | Construction | 2004 |
| Powerspark Systems Ltd | Other services | 2024 |
| PP Gutters Ltd | Administrative & support | 2016 |
| PP Produce Ltd | Transport & logistics | 2016 |
| PP Vehicle Solutions Limited | Wholesale & retail | 2024 |
| PPV Ventures Ltd | Hospitality | 2022 |
| PR & JR Developments Limited | Financial services | 2023 |
| Practical Itsm Limited | Information & communication | 2025 |
| Practical Testing Ltd | Information & communication | 2019 |
| Praktica Limited | Manufacturing | 2015 |
| Pramo Tech Limited | Information & communication | 2022 |
| Pranic Healing Ltd | Other services | 2013 |
| Pravaha Homes Ltd | Real estate | 2024 |
| Pravoo Buddha Limited | Hospitality | 2024 |
| PRC Consultancy Services Ltd | Professional & scientific | 2015 |
| Prdsgn Ltd | Professional & scientific | 2012 |
| Prebendal Avenue Limited | Extraterritorial | 2018 |
| Precision Cargo Services Limited | Transport & logistics | 1990 |