| Prime Flow Plumbing & Heating Ltd | Construction | 2025 |
| Prime Grading Limited | Administrative & support | 2016 |
| Prime Home Services Limited | Real estate | 2017 |
| Prime Logistics Rentals Limited | Administrative & support | 2026 |
| Prime Move Lettings Ltd | Real estate | 2020 |
| Prime Nest Mart Limited | Wholesale & retail | 2026 |
| Prime Physio Care Limited | Other services | 2020 |
| Prime Pick Mart Limited | Wholesale & retail | 2025 |
| Prime Plus Enterprise Limited | Wholesale & retail | 2024 |
| Prime Retail Traders Limited | Wholesale & retail | 2026 |
| Prime Satcom Consulting Limited | Information & communication | 2003 |
| Prime Scrap & Removal Limited | Water & waste | 2026 |
| Prime Security and FM Solutions Ltd | Administrative & support | 2023 |
| Prime Services and Facilities Ltd | Wholesale & retail | 2022 |
| Prime Shuttle Ltd | Transport & logistics | 2026 |
| Prime Surveying & Sustainability Ltd | Professional & scientific | 2023 |
| Prime Sweep Ltd | Administrative & support | 2023 |
| Prime Threads Limited | Wholesale & retail | 2025 |
| Prime Travel Services Limited | Transport & logistics | 2019 |
| Prime UK Vends Limited | Hospitality | 2026 |
| Prime Wipe & Shine Limited | Administrative & support | 2023 |
| Primealbertsales Ltd | Wholesale & retail | 2023 |
| Primebridge Marketing Limited | Administrative & support | 2025 |
| Primecore Developments Limited | Construction | 2025 |
| Primecrest Solutions Ltd | Education | 2026 |
| Primed Homes Ltd | Hospitality | 2023 |
| Primeedge Facilities Ltd | Administrative & support | 2025 |
| Primehub Solutions Ltd | Wholesale & retail | 2024 |
| PRIMEMEATS4U Ltd | Wholesale & retail | 2024 |
| Primenestuk Ltd | Wholesale & retail | 2026 |
| Primepoint Commerce Ltd | Wholesale & retail | 2025 |
| Primepoint Store Limited | Wholesale & retail | 2024 |
| Primesource International Ltd | Information & communication | 2023 |
| Primestone Group Ltd | Administrative & support | 2023 |
| Primetruzt Ltd | Construction | 2025 |
| Primevale Trading Ltd | Wholesale & retail | 2025 |
| Primex Edge Ltd | Wholesale & retail | 2025 |
| Primex Trading Services Ltd | Wholesale & retail | 2017 |
| Primo Equus Ltd | Other services | 2007 |
| Primo Milestone Limited | Information & communication | 2016 |
| Primo's Gentlemen's Barber Shop Limited | Other services | 2018 |
| Primstone Consulting Limited | Professional & scientific | 1996 |
| Primus Home Improvements Ltd | Construction | 2026 |
| Primus Plastering Solutions Ltd | Construction | 2012 |
| Princess K Ltd | Extraterritorial | 2020 |
| Principal Housing Limited | Health & social care | 2018 |
| Principle Capital Ltd | Administrative & support | 2004 |
| Principle Technologies UK Limited | Information & communication | 2009 |
| Print-Toners.Co.Uk Ltd | Wholesale & retail | 2020 |
| Printaura Limited | Wholesale & retail | 2026 |
| Printbay Ltd | Information & communication | 2016 |
| Printco Packaging Ltd | Manufacturing | 2024 |
| Printquick Limited | Manufacturing | 2013 |
| Priority Print Limited | Manufacturing | 2001 |
| Priory Heights RTM Company Limited | Households | 2009 |
| Priory Press (Dunstable) Limited | Information & communication | 1992 |
| Pripaq Limited | Professional & scientific | 2004 |
| Prisca Ltd | Health & social care | 2023 |
| Prishtine Ltd | Transport & logistics | 2026 |
| Prishwa Limited | Real estate | 2025 |
| Prism Glazing Ltd | Construction | 2020 |
| Prisma Clean Cleaning Ltd | Administrative & support | 2025 |
| Pristine Auto Care Ltd | Wholesale & retail | 2024 |
| Pristine Baobab Limited | Real estate | 2025 |
| Pristine Carpet & Upholstery Service Ltd | Administrative & support | 2025 |
| Pristine Chauffeuring Ltd | Transport & logistics | 2025 |
| Pritpal Singh Chakal Ltd | Construction | 2023 |
| Privacy Protect Services Ltd | Extraterritorial | 1998 |
| Private Advisory Centre Ltd | Professional & scientific | 2011 |
| Private and Commercial Flooring Ltd | Construction | 2024 |
| Privilege Linguistics Limited | Professional & scientific | 2014 |
| Privilege Secureguard Ltd | Administrative & support | 2026 |
| Priyan Property Ltd | Real estate | 2021 |
| Prizel Energy Tecnologies Ltd | Construction | 2026 |
| Pro Accountancy Ltd | Professional & scientific | 2019 |
| Pro Billings Ltd | Wholesale & retail | 2025 |
| Pro Building Solutions Ltd | Construction | 2026 |
| Pro Excavations Limited | Construction | 2024 |
| Pro Fit Kitchens Ltd | Administrative & support | 2015 |
| Pro FIX Maintenance LTN Limited | Construction | 2025 |
| Pro Gadget Services Ltd | Wholesale & retail | 2025 |
| Pro Heating Solutions Ltd | Construction | 2013 |
| Pro Labore DEI | Health & social care | 2003 |
| Pro Plant Repair Ltd | Manufacturing | 2025 |
| Pro Vantage Roofing & Building Services Ltd | Construction | 2025 |
| Pro Wash Exterior Limited | Administrative & support | 2025 |
| Pro-Install Contractors Ltd | Other services | 2013 |
| Pro-Man(Uk) Ltd | Administrative & support | 2016 |
| Pro-Ren Services Ltd | Construction | 2020 |
| Pro-Source Plastics Limited | Manufacturing | 2021 |
| PRO4UK Limited | Manufacturing | 2017 |
| Proactive Marketing and Consultancy Ltd | Real estate | 2024 |
| Probitts & Co Limited | Professional & scientific | 2018 |
| Probuild Direct Limited | Construction | 2024 |
| Probuild Support Services Ltd | Construction | 2024 |
| Probus Investment Limited | Real estate | 2024 |
| Procaremonitor Limited | Health & social care | 2024 |
| Proconect DMT Construct Ltd | Construction | 2017 |
| Proconect DMT Services Ltd | Construction | 2020 |
| Procure Logic Limited | Professional & scientific | 2019 |