| P.A.Laye Limited | Administrative & support | 2025 |
| P.Bailey Properties Limited | Real estate | 2019 |
| P.E. Technicals Ltd | Construction | 2007 |
| P.E.H. Consulting Ltd | Information & communication | 2010 |
| P.H.G Systems Ltd | Construction | 2026 |
| P.I.B Plumbing Ltd | Construction | 2024 |
| P.K.Donnelly Ltd. | Health & social care | 2022 |
| P.Korch Driving School Limited | Education | 2022 |
| P.S.P.(Plumbing & Heating) Supplies Limited | Wholesale & retail | 2000 |
| P.Yates IT Consultant Ltd | Information & communication | 2019 |
| P2O Consulting Ltd | Administrative & support | 2022 |
| P3 Advance Ltd | Wholesale & retail | 2018 |
| P6 Project Planning Ltd | Professional & scientific | 2020 |
| PAA Commercial Properties Ltd | Real estate | 2023 |
| PAA OIL & GAS Consultancy Ltd | Administrative & support | 2008 |
| PAC Projects Limited | Administrative & support | 2008 |
| Pace and Passion Limited | Professional & scientific | 2015 |
| Pacfort Limited | Manufacturing | 2022 |
| Pacific Nuclear Transport Limited | Transport & logistics | 1975 |
| Pacific Ocean Chinese Takeaway Limited | Hospitality | 2025 |
| Pacifica Restaurants Ltd | Hospitality | 2018 |
| Package Boiler Services Limited | Professional & scientific | 1986 |
| Packnet Limited | Information & communication | 2003 |
| Pactlight Limited | | 1988 |
| Pactolus Consulting Limited | Professional & scientific | 2018 |
| Padama Holdings Ltd | Real estate | 2025 |
| Padel Colosseum Ltd | Arts & recreation | 2025 |
| Padel Corporation UK Ltd | Arts & recreation | 2025 |
| Padel LAB Ltd | Arts & recreation | 2024 |
| Padelism Ltd | Construction | 2024 |
| Padgate Memorials Limited | Construction | 2019 |
| Padgate Property Management Ltd | Households | 2019 |
| Padgate Rose Ltd | Hospitality | 2018 |
| Padken Steel Erectors Limited | Construction | 2004 |
| Padme Services Limited | Professional & scientific | 2021 |
| Padmike Properties Limited | Real estate | 2018 |
| Page Developments Limited | Construction | 2021 |
| Pageant Girl Limited | Administrative & support | 2010 |
| Paisley June Ltd | Professional & scientific | 2014 |
| PAK World Limited | Wholesale & retail | 2018 |
| Paktia Ltd | Wholesale & retail | 2022 |
| Palace Project Management Ltd | Administrative & support | 2020 |
| Paladin Financial Solutions Limited | Financial services | 2009 |
| Paladin Services Limited | Information & communication | 2025 |
| Paladine Solutions Limited | Information & communication | 2015 |
| Palarus Ltd | Wholesale & retail | 2015 |
| Palatine Cabinets Limited | Manufacturing | 2024 |
| Palatine Motors Ltd | Wholesale & retail | 2006 |
| Palgrave Consulting Limited | Professional & scientific | 2019 |
| Pall Mall Medical (Central Services) Limited | Professional & scientific | 2025 |
| Pall Mall Medical (Liverpool) Holdings Limited | Health & social care | 2013 |
| Pall Mall Medical (Liverpool) Limited | Health & social care | 2013 |
| Pall Mall Medical (Manchester) Holdings Limited | Health & social care | 2013 |
| Pall Mall Medical (Manchester) Limited | Health & social care | 2009 |
| Pall Mall Medical (NLW) Holdings Limited | Health & social care | 2013 |
| Pall Mall Medical (NLW) Limited | Health & social care | 2013 |
| Pall Mall Medical (Patient Services - NW) Limited | Health & social care | 2025 |
| Pall Mall Medical (Services) Holdings Limited | Health & social care | 2025 |
| Pall Mall Medical Holdings Limited | Health & social care | 2013 |
| Pall Mall Medical Services Limited | Health & social care | 2013 |
| Palladium Locks Ltd | Administrative & support | 2015 |
| Palmer Heritage Limited | Other services | 2017 |
| Palmoak Limited | Professional & scientific | 1983 |
| Paloma Capdevila Ltd | Administrative & support | 2025 |
| Palsar Capital Holdings Limited | Financial services | 2024 |
| PAM Health Limited | Wholesale & retail | 1987 |
| PAM Healthcare Limited | Other services | 2021 |
| PAM Occupational Health Solutions Limited | Other services | 2014 |
| PAM Wellbeing Limited | Health & social care | 2010 |
| PAM Wellness Limited | Health & social care | 2004 |
| Pama Design Ltd | Administrative & support | 2024 |
| Pamadoro Pizzeria Ltd | Hospitality | 2024 |
| Pamalican Limited | Extraterritorial | 2006 |
| Pamber Green Services Limited | Professional & scientific | 2017 |
| Pampa Ltd | Other services | 2008 |
| Pamper PIT Stop (Academy) Ltd | Other services | 2026 |
| Pamper PIT Stop Limited | Real estate | 2018 |
| Pampered Pets Cheshire Ltd | Agriculture & fishing | 2023 |
| PAN Resolutions Ltd | Professional & scientific | 2023 |
| Panacea (Design & Management Solutions) Limited | Professional & scientific | 2019 |
| Panacea Radio Limited | Information & communication | 2021 |
| Panco Holdings Limited | Financial services | 2019 |
| Panda Creations Limited | Manufacturing | 2022 |
| Pandamarsh Limited | Administrative & support | 2010 |
| Pandapicks Ltd | Wholesale & retail | 2023 |
| Pandemonium Wines Ltd | Wholesale & retail | 2018 |
| Pandilla Trading Limited | Professional & scientific | 2017 |
| Pang Consulting Limited | Information & communication | 2017 |
| Pangaea Digital Limited | Administrative & support | 2023 |
| Pangea Operational Excellence Ltd | Administrative & support | 2026 |
| Panov Construction Limited | Construction | 2015 |
| Panov Foods Ltd | Hospitality | 2024 |
| Panov Properties Ltd | Real estate | 2024 |
| Panthalassa GEO Limited | Professional & scientific | 2016 |
| Pantheon Energy Ltd | Wholesale & retail | 2025 |
| Panvale Properties Limited | Real estate | 1999 |
| PAP Property Limited | Real estate | 2024 |
| Papa Investment Holdings Limited | Real estate | 2019 |
| Papa John's Procurement Services Limited | Administrative & support | 2025 |
| Papilio Productivity Limited | Professional & scientific | 2014 |