| Paik & Sons Investments Limited | Real estate | 2024 |
| Paint Stop Limited | Wholesale & retail | 2019 |
| Painting LAB Ltd | Wholesale & retail | 2020 |
| Painting Smart Solution Limited | Construction | 2015 |
| Pairings Travel Co. Ltd | Administrative & support | 2026 |
| Pakistan Consultancy Association | Professional & scientific | 2021 |
| Pakistan Welfare Association High Wycombe Ltd | Other services | 2022 |
| Palatial Carpets Ltd | Construction | 2024 |
| Palaver Productions Ltd | Arts & recreation | 2022 |
| Palcon Energy Services Limited | Construction | 2014 |
| Pallet Bookings Ltd | Transport & logistics | 2024 |
| Palmers Design & Build Ltd | Construction | 2026 |
| Pamper Your Partner Ltd | Wholesale & retail | 2021 |
| PAN - Utility Limited | Professional & scientific | 2003 |
| Pandect Limited | Professional & scientific | 1994 |
| Pandect Precision Components Limited | Manufacturing | 1964 |
| Pandher Limited | Transport & logistics | 2025 |
| Pandiya's Fresh Fish Limited | Wholesale & retail | 2024 |
| Pangbourne Developments Limited | Real estate | 2011 |
| Panman Ltd | Arts & recreation | 2024 |
| Panna Partners Limited | Professional & scientific | 2013 |
| Panoramic Construction Limited | Construction | 2025 |
| Paper and Pixel Ltd | Arts & recreation | 2025 |
| Paradigm (Holdings) Limited | Professional & scientific | 1998 |
| Paradigm Commercial Limited | Construction | 1993 |
| Paradigm Development Services Limited | Administrative & support | 2009 |
| Paradigm Maintenance Limited | Administrative & support | 2010 |
| Paramount Couriers Ltd | Transport & logistics | 2025 |
| Paramount Fire Armour Limited | Public administration | 2012 |
| Paramount Plumbing Limited | Construction | 2003 |
| Paramount United Ltd | Hospitality | 2017 |
| Paraplan Partners Ltd | Administrative & support | 2026 |
| Parasakthy UK Ltd | Wholesale & retail | 2016 |
| Parasoft UK Limited | Information & communication | 2004 |
| Paratacha Ltd | Other services | 2019 |
| Parc Nedd Residents Association Limited | Extraterritorial | 1999 |
| Parcel Post Depot Ltd | Transport & logistics | 2010 |
| Parisa Sports Club Ltd | Arts & recreation | 2017 |
| Parizee Ltd | Wholesale & retail | 2026 |
| Park Parade Cafe Limited | Hospitality | 2014 |
| Park Parade Management Limited | Real estate | 1991 |
| Park View (Stuart Road) Management Company Limited | Households | 2014 |
| Parkhill Support Services Ltd | Real estate | 2018 |
| Parks & Brown Structural Engineers Ltd | Professional & scientific | 2021 |
| Parkstone Chiropractic Clinic Limited | Health & social care | 2017 |
| Parkwood Management Company (Kettering) Limited | Professional & scientific | 2005 |
| Parnell's EV Ltd | Wholesale & retail | 2020 |
| Parrilla Charrua Limited | Hospitality | 2024 |
| Parrot Squawk 1 Limited | Administrative & support | 1994 |
| Parrot Squawk 2 Limited | Extraterritorial | 2015 |
| Parrot Squawk 3 Limited | Administrative & support | 2011 |
| Parsons Walk Management Company Limited | Households | 2004 |
| Partners With YOU Limited | Professional & scientific | 2001 |
| Partners& Advisory Services Limited | Financial services | 2021 |
| Partners& Group Limited | Financial services | 2019 |
| Partners& Holdings Limited | Financial services | 2019 |
| Partners& Limited | Financial services | 1951 |
| Partners& Underwriting Limited | Financial services | 1991 |
| Parts NON Stop Limited | Wholesale & retail | 2024 |
| Parvaaz Project C.I.C. | Health & social care | 2026 |
| Pasad Properties Limited | Real estate | 2007 |
| Pasha Ventures Ltd | Wholesale & retail | 2025 |
| Passageways (UK) Ltd | Information & communication | 2016 |
| Passionate Pursuit Ltd | Health & social care | 2020 |
| Passive Window Store Ltd | Construction | 2018 |
| Pasuncholai Ltd | Agriculture & fishing | 2021 |
| Patel Pubco (the Old Oak) Ltd | Hospitality | 2019 |
| Pathfinder Expeditions Ltd | Arts & recreation | 2025 |
| Pathogen XYZ Ltd | Information & communication | 2022 |
| Pathways Estate Limited | Real estate | 2018 |
| Patrick Philippe Bauristhene Limited | Information & communication | 2025 |
| Patsoh Limited | Construction | 2018 |
| Paul Bragman Community & Economic Regeneration Consultants Ltd | Professional & scientific | 2014 |
| Paul Chaumeton Limited | Administrative & support | 2015 |
| Paul Collins Fitness CIC | Health & social care | 2026 |
| Paul Grace Electrical Limited | Construction | 2012 |
| Paul Hanson Properties Limited | Real estate | 2025 |
| Paul Jones Plastering & Property Services Ltd | Construction | 2025 |
| Paul Kingham Ltd | Real estate | 2016 |
| Paul Newman Limited | Construction | 1993 |
| Paul Wood Machines UK Ltd | Wholesale & retail | 2017 |
| Paula Cook Audiology Ltd | Wholesale & retail | 2024 |
| Paul’S Gutters Ltd | Administrative & support | 2025 |
| Paws and Order Limited | Wholesale & retail | 2025 |
| Paws on the Run Ltd | Other services | 2023 |
| PAX Holdings Limited | Real estate | 2021 |
| Paxwood Support Consultants Limited | Information & communication | 2014 |
| Paycause Limited | Construction | 1987 |
| Paye Assist Limited | Professional & scientific | 2011 |
| PB Moto Academy Ltd | Education | 2016 |
| PB Sparks Ltd | Construction | 2021 |
| PB Sterling Ltd | Professional & scientific | 2018 |
| PBK Handyman Limited | Construction | 2022 |
| PBS Property Investment Ltd | Real estate | 2025 |
| PCB Technical Solutions Limited | Construction | 2013 |
| Pcmi Limited | Professional & scientific | 2003 |
| PCOMP2(FOCUS) Limited | Administrative & support | 2016 |
| PCOMP3(LP) Limited | Financial services | 1998 |
| PCOMP4(LPG) Limited | Financial services | 2015 |
| PCS Controls Limited | Administrative & support | 2018 |