| Pebbleford Lettings Ltd | Real estate | 2018 |
| Pebbleford Roofing Ltd | Construction | 2023 |
| PEC Holdings Limited | Professional & scientific | 2005 |
| PEC Trading Limited | Construction | 2005 |
| Pecunia FEE Services Ltd | Education | 2025 |
| Pedrick Marketing Services Limited | Extraterritorial | 2000 |
| Pega Hoist UK Ltd | Manufacturing | 2022 |
| Pegasus Power Solutions Ltd | Construction | 2025 |
| Pegasus Prime Care Ltd | Administrative & support | 2026 |
| Pehlay Properties Limited | Real estate | 2025 |
| Pentagon Krav Maga Ltd | Arts & recreation | 2022 |
| Pentagram Management Ltd | Hospitality | 2025 |
| Pentelow Farms (Rothwell) Limited | Agriculture & fishing | 1980 |
| Peopleconnect Group Limited | Professional & scientific | 2025 |
| Perazim Care Solutions Ltd | Health & social care | 2024 |
| Perebayer Ltd | Wholesale & retail | 2018 |
| Perfect Care Support Ltd | Health & social care | 2024 |
| Perfect Cleaning 365 Ltd | Administrative & support | 2019 |
| Perfecta Assets Limited | Administrative & support | 1989 |
| PERFORM1 Limited | Financial services | 2021 |
| PERFORM2 Ltd | Financial services | 2021 |
| PERFORM3 Limited | Financial services | 2021 |
| Performance Finance (Wholesale) Ltd | Financial services | 2018 |
| Performance Finance Limited | Financial services | 2003 |
| Performance Lease Finance LLP | | 2012 |
| Performance Patient Finance Limited | Professional & scientific | 2003 |
| Permanent Access Solutions Ltd | Construction | 2023 |
| Pershore Paws Ltd | Financial services | 2026 |
| Person Centered Care Ltd | Health & social care | 2012 |
| Personal Healthcare Solutions Ltd | Health & social care | 2010 |
| PES & Tarso Ltd | Health & social care | 2021 |
| Pete the Sweep (Kingston Upon Thames) Limited | Other services | 2013 |
| Peter Bennie Limited | Mining & quarrying | 1975 |
| Peter Chettle Woodworking Limited | Manufacturing | 2003 |
| Peter Clarke Transport Limited | Transport & logistics | 2003 |
| Peter Crisp Limited | Real estate | 1969 |
| Peter Harvey (London) Limited | Manufacturing | 1998 |
| Peterborough Auctions Limited | Other services | 2015 |
| PF Sparks Limited | Construction | 2025 |
| PF Trade Ltd | Wholesale & retail | 2012 |
| PG Car Detailing Ltd | Wholesale & retail | 2021 |
| PG Transport Logistics Limited | Transport & logistics | 2025 |
| PG1 Transport Ltd | Transport & logistics | 2024 |
| PGI Bathrooms & Wetrooms Limited | Extraterritorial | 2013 |
| PGI Bathrooms Limited | Construction | 2009 |
| PH KIM Solutions Limited | Professional & scientific | 2024 |
| Phil&Dan Property Services Ltd | Construction | 2024 |
| Philip Hector & Co Limited | Professional & scientific | 2009 |
| Phillips PUB Company Limited | Hospitality | 2025 |
| Phillips Taverns Limited | Hospitality | 2022 |
| Philmaura Ltd | Professional & scientific | 2018 |
| Phoenix Fuel Trans Ltd | Transport & logistics | 2023 |
| Phoenix Motor Repairs Ltd | Wholesale & retail | 2025 |
| Phoenix Safetywear Limited | Wholesale & retail | 2004 |
| Phoenix Surfacing Limited | Construction | 1991 |
| Phoneexpertskettering Ltd | Wholesale & retail | 2023 |
| Phoneguykettering Limited | Wholesale & retail | 2022 |
| Photon Worx Ltd | Extraterritorial | 2024 |
| PIC PAC UK Ltd | Transport & logistics | 2025 |
| Pickanytwo Limited | Manufacturing | 2012 |
| Picket & Perch Ltd | Manufacturing | 2026 |
| Picture the Difference Community Interest Company | Arts & recreation | 2016 |
| Pigmentica Ltd | Other services | 2025 |
| Pimento Food Ltd | Transport & logistics | 2016 |
| Pimpernel Consultants/Advisory Services Ltd | Administrative & support | 2015 |
| Pink Clouding Co Ltd | Wholesale & retail | 2019 |
| Pink Money Ltd | Financial services | 2024 |
| Pinnacle Professional Cleaning Limited | Administrative & support | 2004 |
| Piper Outsourcing Ltd | Professional & scientific | 2020 |
| Pippinsells Ltd | Wholesale & retail | 2023 |
| Pisces (Computer Services) Limited | Energy | 1977 |
| Pitchrmt Limited | Arts & recreation | 2017 |
| Pitsford Homes Limited | Construction | 2020 |
| Pittam Enterprises Ltd | Other services | 2023 |
| Pivotstone Business Advisors Ltd | Administrative & support | 2026 |
| Pixooma Limited | Professional & scientific | 2014 |
| Pizza Cheff Ltd | Hospitality | 2025 |
| Pizza Plus Desborough Ltd | Hospitality | 2022 |
| Pizza That Limited | Hospitality | 2026 |
| PJ Holdings (Kettering) Ltd | Financial services | 2021 |
| PJC Property Development Ltd | Real estate | 2021 |
| PJC Sparks Electrical Ltd | Construction | 2011 |
| PJL Strategic Land Limited | Real estate | 2025 |
| PJM Scaffolding Contractors Ltd | Construction | 2010 |
| Plamen 5 Limited | Construction | 2026 |
| Planetary Civilization Ltd | Administrative & support | 2020 |
| Plank Design Limited | Manufacturing | 2013 |
| Plastered Limited | Construction | 2018 |
| Plastering Techniques Ltd | Construction | 2016 |
| Platigo Limited | Transport & logistics | 2024 |
| Platinum HQ Ltd | Other services | 2023 |
| Playful Spaces Ltd | Construction | 2026 |
| Playground Developments Ltd | Administrative & support | 2008 |
| PLB Consulting Ltd | Professional & scientific | 2024 |
| Plmbng Heating Services Ltd | Construction | 2023 |
| Plot & Paddock Ltd | Real estate | 2023 |
| Ploutos Capital Management Ltd | Financial services | 2025 |
| Ploutos Financial Ltd | Financial services | 2025 |
| Plumbco Management Company Ltd | Construction | 2014 |
| Plumbco Properties Ltd | Financial services | 2022 |