| Perry Hall Properties Ltd | Real estate | 2024 |
| Perrys Solutions Limited | Wholesale & retail | 2007 |
| Personalised Business Marketing (UK) Limited | Administrative & support | 2011 |
| Perspective Facades Limited | Construction | 2024 |
| Pesh Landscapes Ltd | Administrative & support | 2012 |
| Pet Packaging Technology Co., Ltd | Extraterritorial | 2020 |
| Petbrit Global Limited | Wholesale & retail | 2026 |
| Petsway Holding Co., Ltd | Extraterritorial | 2020 |
| PF Machinery Limited | Manufacturing | 2024 |
| PFG One Limited | Real estate | 2024 |
| PFG Two Ltd | Real estate | 2023 |
| Pfjs International Consulting Ltd. | Professional & scientific | 2010 |
| Pfos Limited | Professional & scientific | 2015 |
| PG Business Consulting Ltd | Professional & scientific | 2020 |
| PG Trading (China) Co., Limited | Extraterritorial | 2009 |
| PGH Carpentry Limited | Manufacturing | 2014 |
| Pglp Investments Limited | Real estate | 2020 |
| Phaeton Marine Engineering Service Co., Ltd | Manufacturing | 2021 |
| Pharma United Company Limited | Extraterritorial | 2013 |
| Pharmtisan International Limited | Extraterritorial | 2020 |
| Phelps Consulting Ltd | Professional & scientific | 2011 |
| Phenix Publishing (UK) Limited | Information & communication | 2018 |
| Phil Marchant Ltd | Information & communication | 2019 |
| Phillips Health Care Service Limited | Other services | 2013 |
| Philliro Trading Import and Export Co., Limited | Manufacturing | 2025 |
| Phloem Agrochemicals Limited | Professional & scientific | 2011 |
| Phoenix Accounting Ltd | Professional & scientific | 2006 |
| Phoenix Chemical Co., Ltd | Wholesale & retail | 2022 |
| Phoenix Cinema Works Limited | Information & communication | 2025 |
| Phoenix Payroll Solutions Ltd | Professional & scientific | 2013 |
| Phoenix Refining Ltd | Manufacturing | 2019 |
| Phoenix-Med Service Limited | Information & communication | 2025 |
| Phoenixmist Ltd | Wholesale & retail | 2025 |
| Phoenixtex Industrial Limited | Manufacturing | 2024 |
| Phoera Cosmetics Limited | Wholesale & retail | 2015 |
| Phokus Management Limited | Professional & scientific | 2018 |
| PHS Accountants Ltd | Professional & scientific | 2020 |
| Phsd Properties Ltd | Real estate | 2022 |
| PHU Group Co., Ltd | Extraterritorial | 2015 |
| Phystool Co., Ltd | Extraterritorial | 2010 |
| PI 227 Limited | Financial services | 2014 |
| Pickhurst Ventures Limited | Wholesale & retail | 2015 |
| Pictureimage Ltd | Professional & scientific | 2018 |
| Pier Luigi's Restaurant Limited | Hospitality | 2010 |
| Pierogicompany Limited | Wholesale & retail | 2019 |
| Pietro Home Ltd | Extraterritorial | 2023 |
| Piggy Enen (UK) Industry Ltd | Extraterritorial | 2020 |
| Pikgoolo Co., Ltd | Extraterritorial | 2021 |
| Pilcher Associates Limited | Professional & scientific | 2007 |
| Pillar Finance Limited | Financial services | 2024 |
| Pillarsuman Trading Limited | Extraterritorial | 2026 |
| Pilley Beckenham Limited | Construction | 2013 |
| Pilley Brickwork Limited | Construction | 2014 |
| Pilytec Co., Ltd | Extraterritorial | 2014 |
| Pimlico Painters and Decorators Limited | Construction | 2012 |
| Pine International Co., Ltd. | Extraterritorial | 2016 |
| Pingao Crafts Limited | Wholesale & retail | 2023 |
| Pink Elephants Nursery Ltd | Health & social care | 2018 |
| Pink IVY Ltd | Real estate | 2023 |
| Pink IVY Services Ltd | Construction | 2023 |
| Pinkylash Co., Ltd | Extraterritorial | 2018 |
| Pinnacleflow Trading Co., Ltd | Wholesale & retail | 2025 |
| Pinsoa Co., Ltd | Wholesale & retail | 2021 |
| Pipiiz Ltd | Wholesale & retail | 2022 |
| PIR (London) Limited | Professional & scientific | 2021 |
| Pistachio Mind Ltd | Professional & scientific | 2025 |
| Pististech Co., Limited | Wholesale & retail | 2024 |
| Pivotas Support Services Limited | Administrative & support | 2016 |
| Pixel Flare Ltd | Professional & scientific | 2021 |
| Pixie Day Nursery Ltd | Education | 2015 |
| Pjford Ltd | Construction | 2019 |
| PJS Bright-Light Limited | Administrative & support | 2020 |
| PJT Professional Limited | Administrative & support | 2008 |
| Pjux Ltd | Information & communication | 2018 |
| PK1004 Limited | Health & social care | 2024 |
| PKB Motor Company Limited | Wholesale & retail | 2020 |
| Pktr Limited | Construction | 2019 |
| PL Global Properties Ltd | Households | 2024 |
| Place Park Limited | Administrative & support | 2024 |
| Placebloc Ltd | Administrative & support | 2023 |
| Plain Finance Ltd | Administrative & support | 2018 |
| Planning Redefined Limited | Administrative & support | 2018 |
| Plantsman Holding Co., Ltd. | Wholesale & retail | 2025 |
| Plastic Industrial Group (PIG) Co., Ltd | Extraterritorial | 2015 |
| Platinum Mortgages Limited | Financial services | 2017 |
| Playa Blanca Plots UK Ltd | Real estate | 2025 |
| Plentex Textile Technology Co., Limited | Extraterritorial | 2024 |
| Plenty Divitiae Trade Limited | Agriculture & fishing | 2024 |
| Plmm Investment UK Limited | Real estate | 2021 |
| Ploit Recycling Resource International Limited | Extraterritorial | 2019 |
| PLT Industrial Co., Ltd | Extraterritorial | 2018 |
| Pluanu (UK) Industrial Automation Co., Ltd | Manufacturing | 2022 |
| Plugplus Audio Ltd | Extraterritorial | 2013 |
| Plumbwiser Limited | Extraterritorial | 1997 |
| Plumus Merchant Limited | Wholesale & retail | 2024 |
| Plus 44 Brand Marketing Limited | Wholesale & retail | 2018 |
| Plus Square Design Ltd | Professional & scientific | 2021 |
| Plutus Applied Technology Co., Ltd | Extraterritorial | 2010 |
| Pmactuarial Limited | Administrative & support | 2019 |
| PMC Foundations Limited | Construction | 1990 |