| Prescience Solutions Limited | Professional & scientific | 2024 |
| Press CPF Limited | Professional & scientific | 2007 |
| Press Ssps Ltd | Professional & scientific | 2015 |
| Prestige Aviation Ltd | Administrative & support | 2020 |
| Prestige Builders Cambridge Ltd | Construction | 2025 |
| Prestige Building and Brickwork Ltd | Construction | 2022 |
| Prestige Carpentry Ltd | Manufacturing | 2021 |
| Prestige Doughnuts Ltd | Hospitality | 2018 |
| Prestige Executive & Data Group Ltd | Transport & logistics | 2025 |
| Prestige Maintenance 24/7 Ltd | Construction | 2020 |
| Prestige Outdoor Services Ltd | Administrative & support | 2025 |
| Prestige Park & Leisure Limited | Hospitality | 2019 |
| Prestige Personal Training Ltd | Other services | 2025 |
| Prestige Plumbing Solutions Ltd | Construction | 2020 |
| Prestige Socials Ltd | Administrative & support | 2025 |
| Prestige T&H Ltd | Hospitality | 2026 |
| Preston INK Limited | Information & communication | 2014 |
| Prestwick Court Residents Company Limited | Households | 1995 |
| Pretoria Biotrucks Limited | Administrative & support | 2026 |
| Pretoria Energy Company (Chittering 2) Limited | Energy | 2021 |
| Pretoria Energy Company (Chittering 3) Limited | Energy | 2025 |
| Pretoria Energy Company (Mepal 2) Limited | Energy | 2021 |
| Pretoria Energy Company Holdings 2 Limited | Financial services | 2021 |
| Pretoria Energy Group Limited | Manufacturing | 2021 |
| Pretty Useful Marketing Ltd | Administrative & support | 2012 |
| Pretvo Foods and Trading Ltd | Hospitality | 2025 |
| Pretvo International Limited | Manufacturing | 2025 |
| Pretvo Service Ltd | Wholesale & retail | 2024 |
| Price Holdings (Cambridge) Limited | Financial services | 2024 |
| Price Property Rentals Ltd | Arts & recreation | 2005 |
| Pride of Care Ltd | Health & social care | 2016 |
| Primacy Cars - Executive Transport Solutions Ltd | Transport & logistics | 2025 |
| Primal Authenticity Ltd | Professional & scientific | 2018 |
| Primal EYE Limited | Information & communication | 2012 |
| Primal Mouthguards Ltd | Manufacturing | 2025 |
| Primary Care Respiratory Society UK | Health & social care | 2001 |
| Prime Commitment Limited | Education | 2012 |
| Prime Fifty Limited | Wholesale & retail | 2013 |
| Prime Finish Cambridge Ltd | Construction | 2016 |
| Prime Giveaways Limited | Wholesale & retail | 2025 |
| Prime International Trade Co., Ltd | Wholesale & retail | 2025 |
| Prime Learning Ltd | Education | 2009 |
| Prime Meridian Advisory Ltd | Professional & scientific | 2026 |
| Prime UK Facilities Ltd | Real estate | 2023 |
| Prime Vista Store Ltd | Wholesale & retail | 2025 |
| Primejec Limited | Professional & scientific | 2016 |
| Primemore Ventures Limited | Professional & scientific | 2024 |
| Primescreed Limited | Construction | 2025 |
| Primesensus Ltd | Professional & scientific | 2021 |
| Primexcore Ltd | Information & communication | 2025 |
| Primexeon Limited | Information & communication | 2012 |
| Primilis Limited | Professional & scientific | 2006 |
| Primor Food Safety Ltd | Hospitality | 2020 |
| Primrose Lodge Management Ltd | Households | 2015 |
| Prince Henry Court Limited | Real estate | 2002 |
| Princey's Ltd | Wholesale & retail | 2023 |
| Principal Residential Properties Limited | Real estate | 2008 |
| Prins Properties Limited | Real estate | 2018 |
| Print Design Direct Ltd | Other services | 2006 |
| Printerbello Ltd | Manufacturing | 2015 |
| Prior Consulting (Cambridge) Limited | Professional & scientific | 2002 |
| Prior Scientific Instruments Cambridge Limited | Manufacturing | 2026 |
| Prior Scientific Instruments Limited | Manufacturing | 1946 |
| Priority Digital Health Limited | Information & communication | 2016 |
| Priority Group Services Ltd | Administrative & support | 2025 |
| Priority Healthcare Plus Ltd | Health & social care | 2024 |
| Priority Professional Placements Ltd | Administrative & support | 2015 |
| Priority Roofing and Scaffolding Limited | Construction | 2025 |
| Priority Scaffolding Ltd | Construction | 2026 |
| Priors Meadow Management Company Limited | Households | 2007 |
| Prisdean Advisory Ltd | Professional & scientific | 2026 |
| Prishma Ltd | Real estate | 2021 |
| Prishma Stores Limited | Wholesale & retail | 2022 |
| Prism Training & Consultancy Limited | Administrative & support | 2000 |
| Pristine Broadway Drycleaners Limited | Other services | 2008 |
| Pristine Today CIC | Health & social care | 2025 |
| Pritch Productions Limited | Administrative & support | 2017 |
| Private Cellar Limited | Wholesale & retail | 2005 |
| Private Hire 2 Go Ltd | Transport & logistics | 2022 |
| Private Medical Trustees Limited | Financial services | 2018 |
| Prkk Ltd | Hospitality | 2019 |
| Prmlink Trade Ltd | Wholesale & retail | 2025 |
| Pro CAM Agriculture Limited | Extraterritorial | 2008 |
| Pro CAM Agronomy Limited | Financial services | 2026 |
| Pro CAM CP Limited | Agriculture & fishing | 1979 |
| Pro CAM Europe Agronomy Limited | Financial services | 2026 |
| Pro CAM Europe Limited | Agriculture & fishing | 2007 |
| Pro CAM UK Limited | Financial services | 1989 |
| Pro Clean Cambridgeshire Ltd | Administrative & support | 2024 |
| Pro Lignum Limited | Manufacturing | 2014 |
| Pro Patch Limited | Construction | 2021 |
| Pro Pubs Ltd | Hospitality | 2022 |
| Pro-Glu Limited | Professional & scientific | 2014 |
| Pro-Lec Electrical Solutions Limited | Construction | 2010 |
| Pro-Veg Seeds Limited | Agriculture & fishing | 1990 |
| Proactive Training Ltd | Real estate | 2006 |
| Proauto-Mihaimotosport Ltd | Manufacturing | 2024 |
| Procam Limited | Extraterritorial | 2014 |
| Procare Plus Property Maintenance Limited | Households | 2025 |
| Procengineers Ltd | Professional & scientific | 2026 |