| Premier Logistics Centre Ltd | Administrative & support | 2017 |
| Premier Players Ltd | Arts & recreation | 2025 |
| Premiere Kitchens Limited | Manufacturing | 2003 |
| Premiere Nutrition Limited | Health & social care | 2012 |
| Premium Pages Limited | Transport & logistics | 1999 |
| Premium Waste Solutions Limited | Water & waste | 2020 |
| Prepress Express Limited | Manufacturing | 2002 |
| Presa Construction Ltd | Construction | 2018 |
| Presciense Limited | Information & communication | 2015 |
| Prescott Cars Company Ltd | Wholesale & retail | 2026 |
| Pressed Number Plates Ltd | Wholesale & retail | 2022 |
| Prest Clothing Limited | Wholesale & retail | 2025 |
| Prestenergy Limited | Construction | 2024 |
| Prestige BIO Aesthetics Ltd | Health & social care | 2026 |
| Prestige Building & Maintenance (UK) Limited | Construction | 2004 |
| Prestige Domestic and Commercial Maintenance Ltd | Construction | 2025 |
| Prestige House Style Ltd | Wholesale & retail | 2023 |
| Prestige Property Landscaping Ltd | Administrative & support | 2025 |
| Prestige Worldwide Events Limited | Hospitality | 2019 |
| Prestige Worldwide NO 1 Ltd | Construction | 2016 |
| Prevention and Health Limited | Health & social care | 2015 |
| Prfm Limited | Transport & logistics | 2007 |
| Price Murrell Holdings Ltd | Financial services | 2017 |
| Price Murrell Investments Ltd | Real estate | 2017 |
| Priceyinfluence Limited | Professional & scientific | 2024 |
| Pride Barbers Shop Ltd | Other services | 2011 |
| Priestland Places Ltd | Real estate | 2026 |
| Prima Healthcare Group Limited | Manufacturing | 2010 |
| Primal Property Investments Ltd | Real estate | 2025 |
| Primal Property Services Ltd | Construction | 2021 |
| Primalift Nutrition Ltd | Wholesale & retail | 2025 |
| Primary Quest Multi-Academy Trust | Education | 2011 |
| Prime Building Solutions Limited | Construction | 2016 |
| Prime Company Property Ltd | Real estate | 2026 |
| Prime DCM Limited | Construction | 2020 |
| Prime Developments (SW) Limited | Construction | 2019 |
| Prime Drainage Services Limited | Water & waste | 2025 |
| Prime Fast Track Ltd | Wholesale & retail | 2025 |
| Prime IA Ltd | Information & communication | 2024 |
| Prime Line Transport Ltd | Transport & logistics | 2025 |
| Prime Plastering South West Ltd | Construction | 2023 |
| Prime Vista Cleaning Solutions Ltd | Administrative & support | 2026 |
| Primeair Compressors Ltd | Professional & scientific | 2025 |
| Primebase Digital Ltd | Information & communication | 2026 |
| Primebridge Commerce Limited | Wholesale & retail | 2025 |
| Primecare Academy Limited | Health & social care | 2018 |
| Primecentral Property Management Limited | Households | 1989 |
| Primesafe Consulting Ltd | Professional & scientific | 2026 |
| Primesta Ltd | Real estate | 2023 |
| Primrose & Josephsons Properties Limited | Real estate | 2025 |
| Principium Properties UK Limited | Real estate | 2023 |
| Prinknash Abbey Bird and Deer Park Ltd | Arts & recreation | 2025 |
| Prinknash Abbey Enterprises Limited | Manufacturing | 1996 |
| Printopia Ltd | Wholesale & retail | 2024 |
| Printworks Glos Ltd | Real estate | 2022 |
| Priority Health and Care Ltd | Health & social care | 2023 |
| Priority One Building Solutions Ltd | Construction | 2024 |
| Priory Farm Road Ltd | Real estate | 2025 |
| Priory Gallery Limited | Wholesale & retail | 1985 |
| Pristine Domiciliary Care Ltd | Administrative & support | 2020 |
| Pristine Plots Ltd | Administrative & support | 2026 |
| Pristine Roofing Services Ltd | Construction | 2023 |
| Pritchard Jones & Associates Limited | Professional & scientific | 1989 |
| Pritchard Motor Services Limited | Wholesale & retail | 2011 |
| Private Health Partners Limited | Financial services | 2026 |
| Prmd Associates Limited | Information & communication | 2011 |
| Pro Audio UK Limited | Extraterritorial | 2022 |
| Pro Carpentry and Joinery Ltd | Construction | 2019 |
| Pro Clerking Ltd | Education | 2023 |
| Pro Clubs Weekly Limited | Information & communication | 2023 |
| Pro Dispatch Limited | Wholesale & retail | 2023 |
| Pro Global Holdings Ltd | Financial services | 2016 |
| Pro Grime Busters Ltd | Administrative & support | 2025 |
| Pro Insurance Solutions Limited | Financial services | 1993 |
| Pro Legal Solutions Ltd | Professional & scientific | 2025 |
| Pro MGA Holdings Ltd | Financial services | 2021 |
| Pro MGA Solutions Ltd | Financial services | 2017 |
| Pro MGU UK Ltd | Financial services | 2025 |
| Pro Performance Clothing Ltd | Wholesale & retail | 2024 |
| Pro Rentals Ltd | Administrative & support | 2018 |
| Pro-Active Pest Management Services Ltd. | Professional & scientific | 2005 |
| Pro-Tile Limited | Construction | 2014 |
| Pro-Trowel Ltd | Construction | 2025 |
| Proactrac Limited | Professional & scientific | 2022 |
| Proarecruitment Limited | Administrative & support | 2025 |
| Probe IT Consult Ltd | Administrative & support | 2018 |
| Probin's Plumbing & Heating Limited | Construction | 2019 |
| Probo Medical Holdings Limited | Wholesale & retail | 2018 |
| Probo Medical Ltd | Manufacturing | 1997 |
| Procare Gloucestershire Services Ltd | Public administration | 2020 |
| Procare Services Plus Ltd | Public administration | 2023 |
| Process Solutions (Nuclear) Limited | Professional & scientific | 2007 |
| Proclene Limited | Other services | 2012 |
| Procook (Kitchens) Limited | Extraterritorial | 2019 |
| Procook (Steamer Trading) Limited | Wholesale & retail | 2019 |
| Procook Group PLC | Wholesale & retail | 2021 |
| Procook Limited | Wholesale & retail | 2008 |
| Product Development Consulting Limited | Professional & scientific | 2026 |
| Professional Resources Limited | Extraterritorial | 1991 |
| Profoil Limited | Manufacturing | 1996 |