| Povertyover CIC | Education | 2025 |
| Powell Estates Limited | Real estate | 2017 |
| Power 4 Build Ltd | Construction | 2023 |
| Power Construction Ltd | Construction | 2024 |
| Power EMS Limited | Arts & recreation | 2025 |
| Power London Ltd | Wholesale & retail | 2024 |
| Power of Soul Limited | Education | 2023 |
| Power Progress Limited | Wholesale & retail | 2016 |
| Power Units Ltd | Wholesale & retail | 2017 |
| Powered UP Games Limited | Information & communication | 2005 |
| Powerful Training Limited | Administrative & support | 2020 |
| Powerhouse Global Ltd | Information & communication | 2018 |
| Powershell Technologies Ltd | Information & communication | 2023 |
| Powis Investment Company Limited | Real estate | 1947 |
| Powltech Limited | Real estate | 2025 |
| Ppcarr Ltd | Real estate | 2025 |
| PPK Building Contractors Limited | Construction | 2017 |
| Pplt Properties Ltd | Real estate | 2025 |
| PPW Trading Limited | Financial services | 2025 |
| PR Greens Ltd | Wholesale & retail | 2026 |
| Practicals Limited | Wholesale & retail | 2004 |
| Practice Leads on to Success Ltd | Other services | 2019 |
| Practicebox Ltd | Information & communication | 2017 |
| Practicegenie Ltd | Education | 2024 |
| Practick Ltd | Construction | 2026 |
| Prairie London Limited | Real estate | 2022 |
| Prajjen Limited | Hospitality | 2023 |
| Prakash Constructions Ltd | Construction | 2025 |
| Prakash Services Ltd | Other services | 2020 |
| Pramukh Convenience Limited | Wholesale & retail | 2022 |
| Prana Wellness Ltd | Professional & scientific | 2019 |
| Pranay Patel & Co Ltd | Wholesale & retail | 2015 |
| Pranpa Properties Limited | Real estate | 2025 |
| Prasun Service Ltd | Professional & scientific | 2022 |
| Praxis Block Management Ltd | Administrative & support | 2016 |
| Prayav Limited | Hospitality | 2025 |
| Prayomah Limited | Real estate | 2024 |
| PRE Loved Autos Ltd | Wholesale & retail | 2025 |
| Precious Envy Ltd | Wholesale & retail | 2019 |
| Precious Hair and Beauty Salon Limited | Administrative & support | 2017 |
| Precious Little Fingers Ltd. | Wholesale & retail | 2019 |
| Precious Opara Limited | Professional & scientific | 2021 |
| Precious Treasure Furniture C.I.C. | Health & social care | 2021 |
| Precision Food Trading Ltd | Wholesale & retail | 2019 |
| Precision Legal Services Limited | Professional & scientific | 2026 |
| Precision Nexus Consulting Limited | Professional & scientific | 2024 |
| Precision Property Maintenance London Ltd | Administrative & support | 2019 |
| Pree Ltd | Construction | 2020 |
| Preeminent Care Services Ltd | Health & social care | 2018 |
| Preet Properties Limited | Real estate | 2004 |
| Prem Urbanbuild Ltd | Construction | 2026 |
| Premier Companies Trustees Limited | Financial services | 2014 |
| Premier Crabbs Cross Limited | Wholesale & retail | 2025 |
| Premier Fruit & NUT Limited | Wholesale & retail | 1986 |
| Premier Investment Consulting Limited | Financial services | 2021 |
| Premier Learning Limited | Education | 2014 |
| Premier Life Trustees Limited | Financial services | 2014 |
| Premier Locks &Security Ltd | Manufacturing | 2019 |
| Premier Mastertrusts Limited | Financial services | 2014 |
| Premier Pensions Management Limited | Financial services | 2003 |
| Premier Power Network Ltd | Energy | 2025 |
| Premier Programmes Limited | Professional & scientific | 2012 |
| Premier Showfreight (International) Limited | Transport & logistics | 2005 |
| Premier Showfreight Limited | Transport & logistics | 2003 |
| Premier Stores Coventry Limited | Wholesale & retail | 2023 |
| Premier Supermarket and News Limited | Wholesale & retail | 2011 |
| Premier UK Driving School Ltd | Education | 2024 |
| Premiere Wings Ltd | Education | 2016 |
| Premium Build Solutions Ltd | Construction | 2026 |
| Premium Building Maintenance Ltd | Construction | 2024 |
| Premium Fitting Services Limited | Construction | 2022 |
| Premium Foods Coventry Limited | Hospitality | 2026 |
| Premium Group Services Limited | Administrative & support | 2024 |
| Premium Pizza Hot Ltd | Hospitality | 2026 |
| Premtrade Limited | Administrative & support | 2025 |
| Prepsus Ltd | Information & communication | 2014 |
| Prescott Place Limited | Households | 2020 |
| Presentia Products and Packaging Limited | | 1962 |
| Prestige Accident & Bodywork Ltd | Wholesale & retail | 2025 |
| Prestige Assets Limited | Real estate | 2024 |
| Prestige Beauty and Nails Ltd | Other services | 2021 |
| Prestige Consult Limited | Extraterritorial | 2013 |
| Prestige Corporate Events & Hospitality (Essex) Ltd | Arts & recreation | 2025 |
| Prestige Corporate Events & Hospitality (Travel) Ltd | Arts & recreation | 2024 |
| Prestige Enterprises Limited | Financial services | 2011 |
| Prestige Hairdresser Limited | Other services | 2014 |
| Prestige International U.K. Limited | Administrative & support | 1992 |
| Prestige Kitchen Solutions Ltd | Hospitality | 2024 |
| Prestige M.O.T Centre Ltd | Wholesale & retail | 2012 |
| Prestige Motor Trader Limited | Wholesale & retail | 2024 |
| Prestige Nails & Beauty Ltd | Other services | 2023 |
| Prestige Private Catering London Ltd | Hospitality | 2025 |
| Prestige Property Lettings & Management Limited | Households | 2023 |
| Prestigecarpetcleaning Ltd | Administrative & support | 2025 |
| Prestigeresale Ltd | Wholesale & retail | 2025 |
| Prestigesets Ltd | Wholesale & retail | 2026 |
| Prestigious Gifts Ltd | Wholesale & retail | 2014 |
| Prestigious Villas Ltd | Construction | 2024 |
| Prestine Cleaning Solutions Ltd | Administrative & support | 2018 |
| Preston Spencer Ltd | Real estate | 2021 |