| Pharos Consulting Limited | Professional & scientific | 2026 |
| Phat Buns London Ltd | Hospitality | 2026 |
| Phcst Limited | Administrative & support | 2022 |
| PHI Property Solutions Limited | Construction | 2025 |
| Phil's Removals and Deliveries Limited | Transport & logistics | 2012 |
| Philbert Consulting Ltd | Information & communication | 2025 |
| Philip and Peacock Gardening Services Limited | Administrative & support | 2026 |
| Phiresafe Ltd | Construction | 2025 |
| Phoenix Accountancy Limited | Professional & scientific | 2023 |
| Phoenix Accountancy Service Ltd | Professional & scientific | 2013 |
| Phoenix Capital (U.K.) Limited | Financial services | 2021 |
| Phoenix Care (Havering) Limited | Health & social care | 2017 |
| Phoenix Chandeliers Ltd | Administrative & support | 2024 |
| Phoenix Developments London Ltd | Construction | 2010 |
| Phoenix Finserv UK Limited | Financial services | 2023 |
| Phoenix Finstitute Ltd | Education | 2026 |
| Phoenix Franchise Ltd | Professional & scientific | 2026 |
| Phoenix Group (U.K.) Limited | Professional & scientific | 2025 |
| Phoenix Manor Ltd | Real estate | 2021 |
| Phoenix Megamart Limited | Wholesale & retail | 2025 |
| Phoenix Motor Engineering Ltd | Wholesale & retail | 2018 |
| Phoenix Plumbing Services Limited | Construction | 2018 |
| Phoenix Traffic Surveys Limited | Information & communication | 2018 |
| Photographer Paul Ltd | Professional & scientific | 2024 |
| Phs(Limited) Limited | Financial services | 2019 |
| Physical Audio Limited | Professional & scientific | 2015 |
| Physio 1ST UK Limited | Health & social care | 2024 |
| Physio Rehabilitation Ltd | Other services | 2024 |
| Phyton Games Limited | Information & communication | 2026 |
| Picasso's of London Ltd | Construction | 2023 |
| Pickle Pictures Limited | Information & communication | 2012 |
| Picklepioneer Ltd | Manufacturing | 2023 |
| Picture Perfect Ltd | Information & communication | 2015 |
| Piera Ltd | Construction | 2022 |
| Pierce Marketing Ltd | Other services | 2025 |
| Pierr Wood Construction Limited | Construction | 2015 |
| Pike's Properties Limited | Real estate | 2025 |
| Pilgrims Concepts Limited | Administrative & support | 2025 |
| Pillar and Beam Ltd | Construction | 2026 |
| Pillarcraft Limited | Construction | 2025 |
| PIM Joinery Ltd | Construction | 2026 |
| Pimco Accessories Ltd | Wholesale & retail | 2025 |
| Pimea Property Limited | Real estate | 2023 |
| Pims Removals and Storage Ltd | Transport & logistics | 2026 |
| PIN Circle Ltd | Wholesale & retail | 2025 |
| Pindoria Property Services Limited | Financial services | 2017 |
| Pine Grove Developments Ltd | Construction | 2025 |
| Pingu Letting Ltd | Real estate | 2025 |
| Pingu Properties Ltd | Real estate | 2022 |
| Pink Berry Cars Limited | Transport & logistics | 2013 |
| Pink Cube IT Ltd | Administrative & support | 2019 |
| Pink Eyed Emma Ltd | Construction | 2022 |
| Pink Foodie Ltd | Hospitality | 2020 |
| Pink Lemonade Media Ltd | Other services | 2017 |
| Pinkbaes Aesthetics Ltd | Other services | 2022 |
| Pinkstar Consultancy Limited | Professional & scientific | 2025 |
| Pinnacle (London) Limited | Real estate | 2025 |
| Pinnacle Advisors Limited | Professional & scientific | 2025 |
| Pinnacle Care and Recruitment Limited | Administrative & support | 2022 |
| Pinnacle Event Security Limited | Administrative & support | 2026 |
| Pinnacle Heights Limited | Hospitality | 2018 |
| Pinnacle Projects Limited | Construction | 2024 |
| Pinnacle Reports Ltd | Health & social care | 2024 |
| Pinnacle UK Consultants Ltd | Public administration | 2020 |
| Pinnup Records Ltd | Information & communication | 2023 |
| Pinpro Secure Ltd | Administrative & support | 2024 |
| Pintados Healthcare Limited | Health & social care | 2023 |
| Pioneer Asset Technologies Limited | Information & communication | 2020 |
| Pioneer Site Services Limited | Construction | 2015 |
| Piper Mellor Limited | Professional & scientific | 2022 |
| Pira Construct Ltd | Construction | 2025 |
| Piracha Ltd | Health & social care | 2015 |
| Piro Kitchen Ltd | Hospitality | 2025 |
| Pistol Ltd | Construction | 2022 |
| Pitbuild Ltd | Construction | 2012 |
| Pitch United Ltd | Professional & scientific | 2026 |
| Pitchx Ltd | Professional & scientific | 2024 |
| Pitsy UK Ltd | Wholesale & retail | 2025 |
| Pivotal Transport Management & Consultancy Ltd | Professional & scientific | 2020 |
| Pixel London Gaming Ltd | Information & communication | 2022 |
| Pixelaura Digital Ltd | Information & communication | 2025 |
| Pixelnomics Ltd | Wholesale & retail | 2022 |
| Pixi Phones Limited | Wholesale & retail | 2020 |
| Pixie Dust Events Management Ltd. | Professional & scientific | 2011 |
| Pizza Bite Express Ltd | Administrative & support | 2017 |
| Pizza Fusion Ltd | Wholesale & retail | 2025 |
| Pizzeria DI Napoli Limited | Hospitality | 2019 |
| Pizzeria Liri Limited | Hospitality | 2025 |
| PJ Crescent Limited | Hospitality | 2018 |
| PJM Contract Solutions Ltd | Professional & scientific | 2012 |
| PJM Group Supplies Limited | Administrative & support | 2019 |
| PJM Lettings Limited | Real estate | 2025 |
| PK Plumbing & Maintenance Limited | Construction | 2008 |
| PK Strategic Solutions Limited | Professional & scientific | 2015 |
| Pkba Ltd | Wholesale & retail | 2025 |
| PKC Electrical Consultants Limited | Construction | 2026 |
| Pkcraft Ltd | Manufacturing | 2026 |
| PKT Properties Limited | Real estate | 2024 |
| Pk’S Beauty Lounge Ltd | Wholesale & retail | 2023 |
| Places Care Services Limited | Health & social care | 2024 |