| Portsmouth City Transport Limited | Transport & logistics | 2024 |
| Portwest Holdings Limited | Construction | 2022 |
| Portwood Limited | Manufacturing | 2025 |
| Poseidon Offshore (Safety and Health) Ltd | Transport & logistics | 2007 |
| Poseidon Pharmaceutical UK Limited | Wholesale & retail | 2003 |
| Position Trader Ltd | Information & communication | 2025 |
| Positive Cyber Solutions Ltd | Information & communication | 2024 |
| Positive Difference Ltd | Education | 2016 |
| Positive Parenting Publications & Programmes | Education | 1996 |
| Positively YOU Education Limited | Education | 2020 |
| Positively YOU Group Limited | Financial services | 2020 |
| Pospro Group Ltd | Wholesale & retail | 2020 |
| Possibletools Global Limited | Wholesale & retail | 2024 |
| Potato Paradise Ltd | Hospitality | 2025 |
| Pots & Patios Limited | Real estate | 2022 |
| Potter's Touch Limited | Construction | 2025 |
| Powdr Coater Ltd | Other services | 2020 |
| Power Electrical Ltd | Construction | 2026 |
| Power Poles Limited | Wholesale & retail | 2015 |
| Powercut Hair Designers Bargoed Limited | Other services | 2025 |
| Poweron Electrical Engineering Ltd | Construction | 2025 |
| Powrie Electrical Ltd | Construction | 2025 |
| PPM Holdings Limited | Professional & scientific | 2022 |
| PPM Waterside Ltd | Real estate | 2014 |
| PQQ Developments Ltd | Construction | 2025 |
| PR Brickwork Ltd | Construction | 2023 |
| Practitioner Services Limited | Professional & scientific | 2008 |
| Praganna Ltd | Wholesale & retail | 2025 |
| Pragmatiqa Ltd | Information & communication | 2013 |
| Pragsys Limited | Information & communication | 2007 |
| Praj Shan Properties Limited | Real estate | 2025 |
| Praktis Limited | Professional & scientific | 2024 |
| Pranav Private Limited | Real estate | 2024 |
| PRB Construction Services Ltd | Construction | 2017 |
| Prec Limited | Information & communication | 2015 |
| Precast Concrete Structures Limited | Construction | 2002 |
| Precast Holdings Limited | Professional & scientific | 2019 |
| Precious Upvc Installations Ltd | Construction | 2022 |
| Precision Chiropractic Ltd | Health & social care | 2012 |
| Precision Editions Ltd | Wholesale & retail | 2026 |
| Precisionmed Consulting Ltd | Public administration | 2025 |
| Preditor Media Limited | Information & communication | 2008 |
| Preloved Tech Ltd | Wholesale & retail | 2019 |
| Premier Andys Convenience Store Ltd | Wholesale & retail | 2021 |
| Premier Asset Holdings Ltd | Construction | 2002 |
| Premier Car Care (Shropshire) Ltd | Wholesale & retail | 2009 |
| Premier Commercial Catering Ltd | Hospitality | 2026 |
| Premier Commercial Wealth Management Ltd | Financial services | 2012 |
| Premier Copier Solutions Limited | Wholesale & retail | 2010 |
| Premier Finish Property Construction Ltd | Water & waste | 2025 |
| Premier Fleet & Vehicle Services Ltd | Administrative & support | 2025 |
| Premier Forest Acquisitions Limited | Extraterritorial | 2024 |
| Premier Forest Group Limited | Professional & scientific | 2007 |
| Premier Forest Products Limited | Wholesale & retail | 1993 |
| Premier Forest UK Group Holdings Limited | Professional & scientific | 2021 |
| Premier Golf (Newport) Limited | Administrative & support | 2013 |
| Premier Group (UK) Limited | Manufacturing | 2002 |
| Premier Group EOT Limited | Administrative & support | 2025 |
| Premier LEISURE(2026) Limited | Hospitality | 2025 |
| Premier Trading Services Ltd | Wholesale & retail | 2019 |
| Premiere Photography Ltd | Professional & scientific | 2007 |
| Premiership Investment Holdings Limited | Real estate | 2014 |
| Premiership Investments Limited | Extraterritorial | 2015 |
| Premiership Limited | Transport & logistics | 1986 |
| Premiership Philco Limited | Financial services | 2020 |
| Premiher Ltd | Wholesale & retail | 2022 |
| Premium Corporate Services Ltd | Education | 2025 |
| Premium Transportation Ltd | Transport & logistics | 2022 |
| Preplica Ltd | Wholesale & retail | 2021 |
| Press Orange Limited | Financial services | 2024 |
| Press Red Rentals Ltd | Real estate | 2003 |
| Pressed & Fresh Ltd | Other services | 2025 |
| Prestige Bricklaying and Landscaping Ltd | Construction | 2025 |
| Prestige Memorials Limited | Manufacturing | 2005 |
| Preston and Sons Limited | Construction | 2026 |
| Preston Avenue Management Company Limited | Households | 2017 |
| Pretty Puds (Newport) Ltd | Wholesale & retail | 2021 |
| Pretty Puds Wholesale Ltd | Manufacturing | 2019 |
| Pretty Unusual Gifts Limited | Wholesale & retail | 2023 |
| Prevention 1ST Fire Compliance Limited | Administrative & support | 2023 |
| Price Developments & Sons Ltd | Real estate | 2025 |
| Price Digital Ltd | Wholesale & retail | 2019 |
| Price Holidays Limited | Real estate | 2020 |
| Price Home Rental Limited | Real estate | 2020 |
| Price Right Group Ltd | Wholesale & retail | 2019 |
| Prices Accident Repair Centre Limited | Other services | 2013 |
| Primary Film Limited | Information & communication | 2009 |
| Prime Complexcare Ltd | Health & social care | 2024 |
| Prime ERP Limited | Information & communication | 2008 |
| Prime Grocery Ltd | Wholesale & retail | 2023 |
| Prime Media Safety Ltd | Administrative & support | 2003 |
| Prime Payroll Services Ltd | Professional & scientific | 2024 |
| Prime Payroll Solutions Ltd | Professional & scientific | 2024 |
| Prime Service Solutions Ltd | Administrative & support | 2023 |
| Prime Tech Technologies Ltd | Information & communication | 2026 |
| Prime Travel Solutions Ltd | Transport & logistics | 2023 |
| Prime Vehicle Repair Centre Limited | Wholesale & retail | 2023 |
| Prime View Property Ltd | Hospitality | 2018 |
| Primed Health Limited | Manufacturing | 2022 |
| Primis Partners Ltd | Wholesale & retail | 2018 |