| Pasona Limited | Professional & scientific | 2008 |
| Passionbuild Ltd | Construction | 2025 |
| Passleague Limited | Professional & scientific | 2014 |
| Passy Partners Ltd | Real estate | 2017 |
| Pasteurise Ltd | Administrative & support | 2017 |
| PAT Mcardle Properties Limited | Construction | 2015 |
| Patch Wonders Ltd | Wholesale & retail | 2025 |
| Patel H&J Limited | Construction | 2026 |
| Patel Trading Limited | Construction | 2012 |
| Path Construction Ltd | Construction | 2022 |
| Pathway Ministries International Ltd | Professional & scientific | 2023 |
| Patient Health Limited | Financial services | 2016 |
| Patlagica Ltd | Construction | 2013 |
| Patmania Limited | Professional & scientific | 2013 |
| Patmech Ltd | Construction | 2026 |
| Patras Buildworks Ltd | Construction | 2026 |
| Pattersonic Ltd | Manufacturing | 2016 |
| Paul Davies Sound Services Limited | Professional & scientific | 2018 |
| Paul Fortella Limited | Financial services | 2023 |
| Paul Howling Limited | Arts & recreation | 2003 |
| Pause & Create Ltd | Professional & scientific | 2025 |
| Pausha Investments Limited | Real estate | 2021 |
| PAV Gardens Ltd | Other services | 2017 |
| PAV Roti Ltd | Extraterritorial | 2019 |
| Pavila Construction Ltd | Construction | 2023 |
| Pavillion Freehold Limited | Financial services | 2022 |
| Pawpanda Ltd | Wholesale & retail | 2025 |
| Paxmoore Limited | Real estate | 2018 |
| Payment Loyalty Ltd | Information & communication | 2017 |
| Pazat Limited | Administrative & support | 2009 |
| Pbcare Ltd | Public administration | 2020 |
| PBJ Fashion Ltd | Wholesale & retail | 2016 |
| PBM Food Ltd | Hospitality | 2026 |
| PBM People Ltd | Professional & scientific | 2023 |
| PC House (UK) Limited | Information & communication | 1988 |
| PC Real Estate London Limited | Real estate | 2023 |
| PCN 1 Westeros Limited | Health & social care | 2023 |
| PD Gynae Ltd | Health & social care | 2025 |
| PD Specialist Consulting Ltd | Information & communication | 2023 |
| Pdcm Limited | Professional & scientific | 2021 |
| PDL Haulage Group Limited | Transport & logistics | 2022 |
| Peace Developer & Investment Limited | Other services | 2014 |
| Peach VAL Limited | Construction | 2005 |
| Peak Product Engineering Limited | Professional & scientific | 2024 |
| Peak Securities Limited | Real estate | 1961 |
| Pearl IT Systems (UK) Limited | Information & communication | 2017 |
| Pearl'E Global Investments Ltd | Construction | 2013 |
| Pearle Bexstar Project Ventures Limited | Construction | 2015 |
| Pearls of Life Limited | Wholesale & retail | 2024 |
| Pearlshine Limited | Information & communication | 1991 |
| Pearlson Limited | Real estate | 2022 |
| Pearly Whites Dental Ltd | Health & social care | 2017 |
| Peasey Hill Fish and Chips Limited | Hospitality | 2017 |
| PEC Contractors Limited | Administrative & support | 2017 |
| Pecna Care Ltd | Health & social care | 2019 |
| Peerless Globe Ltd | Wholesale & retail | 2020 |
| Pegwood Limited | Real estate | 2015 |
| Peking House Southampton Ltd | Hospitality | 2025 |
| Pekka Ltd | Financial services | 2024 |
| Pelburn Limited | Professional & scientific | 2025 |
| Pelbury Limited | Professional & scientific | 2024 |
| Peldond Limited | Professional & scientific | 2023 |
| Peldor Limited | Professional & scientific | 2024 |
| Pelican Trading Ltd | Financial services | 2023 |
| Pellicci Plumbing and Heating Ltd | Construction | 2026 |
| Pembola Limited | Professional & scientific | 2022 |
| Pembroke Beaumont Limited | Wholesale & retail | 2025 |
| Pembroke Properties (UK) Limited | Real estate | 2023 |
| Pembrokeshire Ventures Ltd | Financial services | 2026 |
| Pendell Consultancy Limited | Professional & scientific | 2013 |
| Penkz Care and Assisted Travels Limited | Health & social care | 2025 |
| Penkz Limited | Professional & scientific | 2008 |
| Penn Close Limited | Households | 2025 |
| Pennycook Enterprises Ltd | Financial services | 2025 |
| Penrose Clinic Ltd. | Wholesale & retail | 2020 |
| Pentagon Real Estates Ltd | Real estate | 1999 |
| Pentex Properties Limited | Construction | 1987 |
| Penth Limited | Real estate | 2019 |
| Penthplace Ltd | Hospitality | 2022 |
| Pentula Limited | Professional & scientific | 2019 |
| Peoentle Ltd | Health & social care | 2022 |
| Peoyame Ltd | Health & social care | 2024 |
| Pepita Limited | Transport & logistics | 2023 |
| Pepper POT Foods Ltd | Manufacturing | 2023 |
| Pepperdine Productions Limited | Information & communication | 2009 |
| Pepperyhouse UK Limited | Professional & scientific | 2018 |
| Peppo C.I.C. | Education | 2021 |
| Peraj Ltd | Hospitality | 2020 |
| Perfect Air and Heating Ltd | Construction | 2025 |
| Perfect Lash & Brow Bar Ltd | Other services | 2020 |
| Perfect REG Limited | Wholesale & retail | 2011 |
| Perfect Touch Cleaning Services Limited | Administrative & support | 2025 |
| Perfecto Crust Ltd | Hospitality | 2025 |
| Perfecto Kitchen Ltd | Hospitality | 2026 |
| Perfordiant Limited | Information & communication | 2014 |
| Pergold Limited | Health & social care | 2020 |
| Peri and Crust Dunstable Ltd | Hospitality | 2025 |
| Peri and Crust Ltd | Hospitality | 2025 |
| Periwinkle Empire UK Ltd | Real estate | 2023 |
| Perk Enterprise Ltd | Wholesale & retail | 2021 |