| P Hull Consultants Limited | Professional & scientific | 2023 |
| P J Livesey Country Homes (Eastern) Limited | Construction | 2001 |
| P J Livesey Country Homes (Merseyside) Limited | Construction | 2001 |
| P J Livesey Homes (1) Limited | Construction | 2017 |
| P J Livesey Homes (10) Limited | Construction | 2022 |
| P J Livesey Homes (2) Limited | Construction | 2020 |
| P J Livesey Homes (3) Limited | Construction | 2020 |
| P J Livesey Homes (4) Limited | Construction | 2020 |
| P J Livesey Homes (5) Limited | Construction | 2020 |
| P J Livesey Homes (6) Limited | Construction | 2022 |
| P J Livesey Homes (7) Limited | Construction | 2022 |
| P J Livesey Homes (8) Limited | Construction | 2022 |
| P J Livesey Homes (9) Limited | Construction | 2022 |
| P J Livesey Homes Limited | Construction | 2010 |
| P J Livesey Living Space (1) Limited | Construction | 2007 |
| P J Livesey Living Space (11) Limited | Construction | 2005 |
| P J Livesey Living Space (12) Limited | Construction | 2001 |
| P J Livesey Living Space (5) Limited | Construction | 2007 |
| P J Livesey Living Space (6) Limited | Construction | 2010 |
| P J Livesey Living Space (9) Limited | Construction | 2010 |
| P J Livesey Living Space (North) Limited | Construction | 2004 |
| P J Livesey North Limited | Construction | 2001 |
| P J Livesey South Eastern Limited | Construction | 2005 |
| P K Flooring Ltd | Wholesale & retail | 2018 |
| P M Assistance Limited | Information & communication | 2002 |
| P M Ramos Interpreting & Translations Limited | Administrative & support | 2015 |
| P Murphy Services Limited | Professional & scientific | 2022 |
| P N P Financial Services Limited | Professional & scientific | 2016 |
| P S Richardson Consulting Limited | Professional & scientific | 2023 |
| P Thompson Consulting Limited | Administrative & support | 2023 |
| P&E Property Management Ltd | Real estate | 2021 |
| P&O Princess American Holdings | Professional & scientific | 1979 |
| P&O Princess Cruises International Limited | Extraterritorial | 2000 |
| P&Ruk Ltd | Other services | 2020 |
| P-Rec Aggregation Facility Limited | Financial services | 2026 |
| P. J. Q. Construction Limited | Construction | 2003 |
| P. W. Gannon Building Limited | Construction | 2004 |
| P.J. Livesey (Manufacturing) Limited | Manufacturing | 1986 |
| P.J. Livesey Country Homes Limited | Construction | 1998 |
| P.J. Livesey Group Limited | Professional & scientific | 2006 |
| P.J. Livesey Heritage Homes North West Limited | Construction | 2002 |
| P.J. Livesey Holdings Limited | Construction | 1996 |
| P.J. Livesey Living Space Limited | Construction | 1996 |
| P.R.O Automation Limited | Professional & scientific | 2025 |
| P.W.C. Transport Ltd | Transport & logistics | 2023 |
| P/E Investments UK Associates Ltd. | Financial services | 2022 |
| P1 Orbital UK Limited | Manufacturing | 2026 |
| P1 Testing Services Limited | Professional & scientific | 2025 |
| P2P Care Ltd | Health & social care | 2025 |
| P2P Communications Limited | Information & communication | 2002 |
| P2P ERP Solutions Limited | Professional & scientific | 2023 |
| P3 People Management Limited | Professional & scientific | 2004 |
| PAC Ventilation Ltd | Construction | 2021 |
| Pacific Wilmslow Ltd | Hospitality | 2026 |
| Paddy's Pizza Altrincham Ltd | Hospitality | 2026 |
| Padel & Pickle Limited | Arts & recreation | 2023 |
| Padmorgan Ltd | Hospitality | 2022 |
| Padova Enterprises Ltd | Financial services | 2025 |
| Pakan Ltd | Manufacturing | 2023 |
| Pakman Ltd. | Wholesale & retail | 2008 |
| Paktinat Limited | Real estate | 2018 |
| Palace Lamp (Holdings) Limited | Wholesale & retail | 1998 |
| Palace Lamp Company Limited | Wholesale & retail | 1939 |
| Palifico Consulting Ltd | Professional & scientific | 2025 |
| Palin Consulting Ltd | Professional & scientific | 2016 |
| Pallma AI Limited | Information & communication | 2025 |
| Palm Arts Limited | Arts & recreation | 2007 |
| Palm Tree Capital UK Limited | Professional & scientific | 2010 |
| Palmer Snell Limited | Professional & scientific | 2002 |
| Palmlove Care Services Ltd. | Health & social care | 2018 |
| Pals Wear Limited | Wholesale & retail | 2020 |
| PAM Healthcare Personnel Ltd | Administrative & support | 2023 |
| Pama Property Ltd | Real estate | 2019 |
| PAN Aegean Estates Limited | Real estate | 2024 |
| Panacea Building Systems Limited | Manufacturing | 2018 |
| Panacea Ceilings and Partitions Limited | Construction | 2021 |
| Panacea Holdco Limited | Financial services | 2020 |
| Panacea Patient Recruitment Limited | Professional & scientific | 2019 |
| Panacia Limited | Education | 2016 |
| Panapics Ltd | Professional & scientific | 2026 |
| Panashe Consulting Limited | Professional & scientific | 2026 |
| Panasports Ltd | Professional & scientific | 2019 |
| Panchoqg Limited | Professional & scientific | 2018 |
| Pandektes Ltd | Information & communication | 2026 |
| Pandell Limited | Wholesale & retail | 1999 |
| Pandora Media UK Ltd. | Administrative & support | 2015 |
| Pang Residential Management Limited | Real estate | 2022 |
| Pano Housing Limited | Real estate | 2023 |
| Panorama Living Limited | Real estate | 1999 |
| Pant Valley Project Management Limited | Professional & scientific | 2025 |
| Panthera Concept Limited | Administrative & support | 2020 |
| Pantville Limited | Administrative & support | 2005 |
| Panwisa Limited | Hospitality | 2026 |
| Paolo DE Asis Perfume Ltd | Wholesale & retail | 2026 |
| Papa Dutch Ltd | Hospitality | 2021 |
| Papa Nova Ltd | Hospitality | 2025 |
| Papar Property Company Ltd | Real estate | 2024 |
| Paperbridge Limited | Professional & scientific | 2026 |
| Papyrus Design (North West) Limited | Administrative & support | 2003 |
| Papyrus Design and Marketing Limited | Professional & scientific | 2015 |