| Parkhouse Care Limited | Health & social care | 2002 |
| Parkroy Limited | Real estate | 2011 |
| Parmar Wealth Management Group Limited | Financial services | 2022 |
| Parmars Properties Ltd | Real estate | 2018 |
| Parnassus UK Limited | Information & communication | 2016 |
| Parot Ltd | Information & communication | 2025 |
| Parts Time 4 U Limited | Wholesale & retail | 2023 |
| Party in Your Plants Ltd | Health & social care | 2024 |
| Party Plaza Ltd | Wholesale & retail | 2025 |
| Party Tent People Limited | Administrative & support | 2025 |
| Parvati Dahya Ltd | Real estate | 2017 |
| Pasco Investments Limited | Real estate | 1999 |
| Passed Driving School Limited | Education | 2022 |
| Passifutures Holdings Ltd | Financial services | 2025 |
| Passifutures Ltd | Construction | 2025 |
| Pastrad Ltd | Real estate | 2025 |
| Patrium Ltd | Real estate | 2016 |
| Patron Holdings Ltd | Real estate | 2020 |
| Paul Mundy Carpets and Flooring Limited | Wholesale & retail | 2015 |
| Paul Phillips Limited | Wholesale & retail | 2014 |
| Paul Shuff Engineering Limited | Professional & scientific | 2014 |
| Paul Waters Screenwriting Ltd | Arts & recreation | 2015 |
| Paul Winchester & Company Limited | Administrative & support | 2005 |
| Paula Hall Ltd | Health & social care | 2007 |
| Pause Ltd | Information & communication | 2024 |
| PAV RAI Limited | Construction | 2013 |
| Pavilion Sports & Entertainment Ltd | Professional & scientific | 2022 |
| Pawgi Limited | Construction | 2019 |
| Pawsitively Pawsome Pups Limited | Other services | 2022 |
| Paxton Property Limited | Households | 2023 |
| Payne UK Enterprises Ltd | Hospitality | 2021 |
| PB & Co Services Limited | Construction | 2023 |
| Pbic Industrial Services Ltd | Construction | 2023 |
| Pbid Properties Limited | Real estate | 2023 |
| PCI Engineering Limited | Professional & scientific | 2026 |
| PDH Interiors Limited | Construction | 2018 |
| Pdmmetrix Limited | Extraterritorial | 2026 |
| PEA Ltd. | Professional & scientific | 1994 |
| Peak Agency Limited | Professional & scientific | 2017 |
| Peak GEN Holdings Limited | Professional & scientific | 2012 |
| Peak GEN Power 10 Limited | Energy | 2014 |
| Peak GEN Power 11 Limited | Energy | 2014 |
| Peak GEN Power 12 Limited | Energy | 2014 |
| Peak GEN Power 13 Limited | Energy | 2014 |
| Peak GEN Power 14 Limited | Energy | 2014 |
| Peak GEN Power 17 Limited | Energy | 2014 |
| Peak GEN Power 18 Limited | Energy | 2014 |
| Peak GEN Power 2 Limited | Energy | 2012 |
| Peak GEN Power 21 Limited | Energy | 2014 |
| Peak GEN Power 24 Limited | Energy | 2014 |
| Peak GEN Power 25 Limited | Energy | 2015 |
| Peak GEN Power 26 Limited | Energy | 2015 |
| Peak GEN Power 3 Limited | Energy | 2013 |
| Peak GEN Power 31 Limited | Energy | 2020 |
| Peak GEN Power 4 Limited | Energy | 2013 |
| Peak GEN Power 5 Limited | Energy | 2013 |
| Peak GEN Power 6 Limited | Energy | 2013 |
| Peak GEN Power 7 Limited | Energy | 2013 |
| Peak GEN Power 8 Limited | Energy | 2014 |
| Peak GEN Power 9 Limited | Energy | 2014 |
| Peak GEN Power Limited | Energy | 2010 |
| Peak GEN Power Systems Limited | Energy | 2011 |
| Peak GEN Top Co Limited | Professional & scientific | 2013 |
| Peak Power Associates Limited | Energy | 2010 |
| Pear Tree Vets Limited | Professional & scientific | 2024 |
| Pearl Dental Ltd | Administrative & support | 2016 |
| Pearsons Cottages Ltd | Households | 2016 |
| Pebbleworth Resourcing Limited | Administrative & support | 2016 |
| Peelcroft Ltd | Extraterritorial | 2016 |
| Penney Ibex Properties Limited | Real estate | 2021 |
| Penns G M Limited | Administrative & support | 2018 |
| People Boost Ltd | Administrative & support | 2021 |
| PER Gradus Limited | Professional & scientific | 2016 |
| Perdix Digital Limited | Information & communication | 2023 |
| Perdix Holdings Limited | Financial services | 2023 |
| Perdix Wildlife Solutions Limited | Manufacturing | 2011 |
| Perfect Stays Accommodation Ltd | Hospitality | 2024 |
| Perform Success Global Limited | Administrative & support | 2014 |
| Performance Clutch Ltd | Wholesale & retail | 2020 |
| Performance LAB Group Ltd | Financial services | 2019 |
| Performance LAB Ltd | Wholesale & retail | 2015 |
| Pergola Drinks Ltd | Wholesale & retail | 2022 |
| PERIFINOS84 Ltd | Hospitality | 2023 |
| Persyou Ltd | Professional & scientific | 2021 |
| Pet Awesome Limited | Wholesale & retail | 2023 |
| Peter Beard Studio Limited | Arts & recreation | 2006 |
| Peter Miller Software Ltd | Information & communication | 2025 |
| Peter Southgate Architects Ltd | Professional & scientific | 2017 |
| Petite Paws Daycare Limited | Agriculture & fishing | 2025 |
| Petroleo Limited | Information & communication | 2015 |
| PEZ Contract Services Ltd | Professional & scientific | 2025 |
| PGP Systems Limited | Energy | 2011 |
| PH Property & Developments Ltd | Real estate | 2017 |
| Phase 3 Axis J9 Management Company Limited | Households | 2024 |
| Phenotype Games Ltd | Information & communication | 2026 |
| Phil at the HOD Limited | Hospitality | 2018 |
| Philip Nunn Design Ltd | Administrative & support | 2022 |
| Phillimore Limited | Professional & scientific | 2012 |
| Phizzy Consulting Limited | Professional & scientific | 2018 |
| Phmtuk Ltd. | Financial services | 2013 |