| Peragrene UK Limited | Manufacturing | 2025 |
| Perchspring Property Management Limited | Real estate | 2003 |
| Percival Associates Group Limited | Financial services | 2017 |
| Percival Associates Investments Limited | Real estate | 2025 |
| Percival Associates Property Limited | Real estate | 2018 |
| Percival Associates Residential Property Limited | Real estate | 2025 |
| Perega Holdings Limited | Financial services | 2013 |
| Perega Limited | Professional & scientific | 2007 |
| Perega Trustees Limited | Administrative & support | 2019 |
| Performance Consultants LLP | | 2007 |
| Performance Doors and Joinery Limited | Financial services | 2017 |
| Performance Preparation Academy Limited | Arts & recreation | 2016 |
| Performance Sourcing Limited | Administrative & support | 2008 |
| Peridot PR Limited | Professional & scientific | 2020 |
| Perpro Consulting Limited | Real estate | 2015 |
| Perpro Trading Limited | Real estate | 2016 |
| Perry Hill Consulting Ltd | Professional & scientific | 2016 |
| Perry Hill Investments Limited | Real estate | 2020 |
| Persequor Limited | Real estate | 2000 |
| Person Centred Software Limited | Administrative & support | 2013 |
| Pet Clinic Holdings Limited | Real estate | 1997 |
| Petards Group PLC | Professional & scientific | 1994 |
| Peter Curry Limited | Professional & scientific | 2015 |
| Peter John Davies Limited | Other services | 2011 |
| Peter Snowdon Automotive Ltd. | Other services | 2018 |
| Peters Restorations Ltd | Wholesale & retail | 2014 |
| Petersham Lodge Ltd | Real estate | 2015 |
| Petex Limited | Extraterritorial | 2023 |
| Petios Limited | Information & communication | 2006 |
| Petroleum Data Analytics Limited | Professional & scientific | 2019 |
| Petruvian Limited | Real estate | 2022 |
| Petworth Bulk & Plant Hire Ltd | Manufacturing | 2015 |
| Petworth Plant Hire Limited | Administrative & support | 2013 |
| Pevnosters Limited | Real estate | 2022 |
| PEW Corner Sports Club Limited | Arts & recreation | 2007 |
| PEW Properties Limited | Financial services | 2015 |
| Pewley Down Consulting Ltd | Information & communication | 2026 |
| Pewley House Consulting Ltd | Professional & scientific | 2020 |
| Pewley Limited | Real estate | 2016 |
| PF & Co Holdings Ltd | Financial services | 2025 |
| PGH Property Ltd | Real estate | 2021 |
| PGL DPL Limited | Health & social care | 2018 |
| PGL KIL Limited | Administrative & support | 2015 |
| Pgmustard Ltd | Information & communication | 2019 |
| Phaistos Management Ltd | Information & communication | 2015 |
| Pharaoh Cars Ltd | Transport & logistics | 2022 |
| Pharmacovigilance Services Limited | Wholesale & retail | 2013 |
| Pharsafer Associates Limited | Professional & scientific | 2003 |
| Phase Europe Ltd | Construction | 2022 |
| Phasemove Property Management Limited | Real estate | 1996 |
| Phenomenal Development Ltd | Administrative & support | 2019 |
| Phestos Ltd | Professional & scientific | 2017 |
| PHH Bristol Temple Meads Ltd | Hospitality | 2021 |
| PHH Graeme House Ltd | Hospitality | 2021 |
| PHI (Aldershot) Limited | Real estate | 2004 |
| PHI (Colchester) Limited | Real estate | 2003 |
| Phi-Medics Limited | Professional & scientific | 2011 |
| Phil-Uk Nars Ltd | Health & social care | 2025 |
| Philip Commercial Limited | Real estate | 1979 |
| Philip Lusher Ltd | Professional & scientific | 2023 |
| Philip Porter Landscaping Limited | Administrative & support | 2011 |
| Phills Bodyshop Ltd | Wholesale & retail | 2023 |
| PHL2 Limited | Construction | 2006 |
| Phoenix Carpentry Ltd | Manufacturing | 2020 |
| Phoenix Land Limited | Construction | 1988 |
| Phoenix Maison Ltd | Real estate | 2024 |
| Phoenix Style Ltd | Wholesale & retail | 2017 |
| Phoenix Training & Coaching Limited | Professional & scientific | 2008 |
| Phoenix Ventilation Holdings Limited | Financial services | 2008 |
| Physio on the Hill Limited | Health & social care | 2022 |
| PI Health Clinical Research Ltd | Professional & scientific | 2025 |
| Pickard Michels French Ltd | Professional & scientific | 2019 |
| Pieface Limited | Administrative & support | 2023 |
| Piglet in DA House Publishing Ltd | Information & communication | 2023 |
| Pilgrim House Management Limited | Households | 1991 |
| Pillay Consulting Limited | Information & communication | 2011 |
| PILLAY5 Property Investments Limited | Real estate | 2023 |
| Pimms Associates Limited | Professional & scientific | 2016 |
| Pine Court Cranley Road Management Limited | Households | 1999 |
| Pinehurst (Guildford) Residents Association Limited | Households | 1998 |
| Pink & Cream Limited | Professional & scientific | 2013 |
| Pink Elephant Limited | Wholesale & retail | 2014 |
| Pink Lemonade Services Limited | Administrative & support | 2022 |
| Pink Lightning Solutions Ltd | Information & communication | 2023 |
| Pinnacle Buildwise Limited | Construction | 2025 |
| Pinnacle Developments (Surrey) Ltd | Real estate | 2006 |
| Pinnacle Gateway Ltd | Education | 2024 |
| Pinpoint Landscapes Ltd | Administrative & support | 2012 |
| Pinto Tree Limited | Financial services | 2014 |
| Pipedrive UK Limited | Information & communication | 2017 |
| Pippin Caine Limited | Information & communication | 2007 |
| Pitch and Pixel Limited | Professional & scientific | 2026 |
| Pivot Accounting Solutions Ltd | Professional & scientific | 2013 |
| Pivot Coaching Ltd | Professional & scientific | 2025 |
| Pixelcount Studios Limited | Information & communication | 2016 |
| Pixelpixie Marketing Ltd | Professional & scientific | 2024 |
| Pizi Limited | Other services | 2017 |
| Pizza Hot Express Guildford Ltd | Hospitality | 2021 |
| Pizza Portfolio Ltd | Hospitality | 2025 |
| PJE Limited | Wholesale & retail | 2022 |