| Pg&D Services Ltd | Construction | 2014 |
| PH Consortium Ltd | Extraterritorial | 2024 |
| Phaino Consultancy & Investment Limited | Professional & scientific | 2009 |
| Phase Control Limited | Construction | 2019 |
| Phil Lavender Building Contractors Ltd | Construction | 2011 |
| Phil's Digital Marketing Ltd | Professional & scientific | 2021 |
| Phlora Build Ltd | Construction | 2024 |
| Phlora Properties Ltd | Real estate | 2025 |
| Phoebeanne Limited | Health & social care | 2020 |
| Phoenix Care Consultants Limited | Health & social care | 2019 |
| Photify Limited | Professional & scientific | 2024 |
| PI Building & Painting Ltd | Other services | 2021 |
| Pillar Private Care Ltd | Administrative & support | 2026 |
| Pine & Bean Ltd | Wholesale & retail | 2025 |
| Pinnacle Construction Alliance Ltd | Construction | 2023 |
| PIP Nation Ltd | Education | 2018 |
| Pisa Nova Ltd | Construction | 2026 |
| Pixelproducts Ltd | Information & communication | 2025 |
| Pizza 2 Night (Catford) Ltd | Hospitality | 2018 |
| Pizza 2 Night Limited | Hospitality | 2002 |
| Pizza Hot 4 U Limited | Professional & scientific | 2003 |
| Pizza Mariano Ltd | Hospitality | 2024 |
| PJ H&S Care Service Ltd | Health & social care | 2017 |
| PJ H&S Consultancy Ltd | Construction | 2012 |
| PJ Tips Limited | Water & waste | 2025 |
| PJ3 Limited | Hospitality | 2023 |
| Pkcol Ltd | Administrative & support | 2024 |
| PL &M Limited | Wholesale & retail | 2020 |
| Planet Coucou Ltd | Extraterritorial | 2021 |
| Platanus.Pbs Ltd | Hospitality | 2025 |
| Platinum Consultancy and Site Services Ltd | Professional & scientific | 2022 |
| Platinum Pallet Services Ltd | Transport & logistics | 2018 |
| Platts & Projects International Company Ltd | Mining & quarrying | 2024 |
| Playnest (Grimsby) Ltd | Health & social care | 2025 |
| Plouta Technologies Ltd | Information & communication | 2025 |
| Plumblife Ltd | Construction | 2016 |
| Plyworx International Ltd | Wholesale & retail | 2025 |
| PMN Care Ltd | Health & social care | 2023 |
| Polad Ltd | Transport & logistics | 2024 |
| Polish Refurbishment Services Ltd | Construction | 2015 |
| Popa Team Construction Ltd | Construction | 2022 |
| Portrait House Limited | Professional & scientific | 2026 |
| Portraits and Pods Limited | Professional & scientific | 2026 |
| Portuscale Ltd | Wholesale & retail | 2020 |
| Posh Pads Home Improvement Services Ltd | Construction | 2015 |
| Power PMO Ltd | Administrative & support | 2021 |
| Power Works Estate Management Limited | Other services | 1991 |
| Powerful Creations Limited | Hospitality | 2020 |
| Ppdml Properties Ltd | Real estate | 2022 |
| Practical Accounting & Training Limited | Education | 2019 |
| Pradya Ltd | Real estate | 2019 |
| Pradya Technologies Ltd | Information & communication | 2020 |
| Pragma HR Solutions Ltd | Professional & scientific | 2021 |
| Praiseline Limited | Professional & scientific | 2013 |
| Precious Consulting Limited | Health & social care | 2012 |
| Precision Borehole Services Ltd | Construction | 2025 |
| Precision Plaster Mouldings Ltd | Construction | 2026 |
| Preet Kang Ltd | Construction | 2025 |
| Premier Talent Group Ltd | Professional & scientific | 2026 |
| Premiere Works and Property Services Limited | Administrative & support | 2024 |
| Press B Consultancy Limited | Professional & scientific | 2023 |
| Pretty Hair by Becky Ltd | Other services | 2020 |
| Pretty Horseware Ltd Ltd | Wholesale & retail | 2023 |
| Prime BG Limited | Transport & logistics | 2016 |
| Prime Projects Design and Management Limited | Professional & scientific | 2014 |
| Primrose Healthcare Services Bexley Limited | Health & social care | 2025 |
| Prince of Wales (T.Wells) Ltd | Wholesale & retail | 2013 |
| Prinik Ltd | Real estate | 2024 |
| Pristine Housing Solutions Ltd | Real estate | 2023 |
| Prized Consulting Limited | Information & communication | 2008 |
| Pro Elite Trainers Ltd | Health & social care | 2016 |
| Procurenow Ltd | Wholesale & retail | 2022 |
| Professional Caregiver Ltd | Health & social care | 2022 |
| Proffiy Limited | Administrative & support | 2021 |
| Proficient Eco Limited | Administrative & support | 2020 |
| Proguard Security Solutions Limited | Administrative & support | 2026 |
| Project Electronics Limited | Professional & scientific | 1993 |
| Project Manufacturing Limited | Manufacturing | 1997 |
| Project Technologies Limited | Professional & scientific | 1997 |
| Projectile Consultancy Limited | Professional & scientific | 2013 |
| Projip Capital Ventures Limited | Financial services | 2023 |
| Promax Logistics Ltd | Transport & logistics | 2023 |
| Proof Finishes Ltd | Construction | 2022 |
| Proper Clean Services Ltd | Administrative & support | 2020 |
| Properties Correct Ltd | Real estate | 2025 |
| Property Business Training UK Ltd | Households | 2018 |
| Propertybe Limited | Real estate | 2016 |
| Propstar Solutions Ltd | Real estate | 2025 |
| Propteck Ltd | Information & communication | 2026 |
| Prosperity Lettings Ltd | Real estate | 2021 |
| Prostandarduk Limited | Administrative & support | 2018 |
| Providence Centered Care Ltd | Health & social care | 2023 |
| Providon Limited | Construction | 2019 |
| Prowells Consult Ltd | Professional & scientific | 2011 |
| Prowells Property Management Ltd | Real estate | 2019 |
| PS Electrical Building Installations Limited | Construction | 2019 |
| PSR Aspire Ltd | Administrative & support | 2021 |
| Pulp Friction Ltd | Water & waste | 2019 |
| Pump Technical Sales Limited | Real estate | 1990 |
| Pump Technical Services Group Holdings Limited | Financial services | 2020 |