| PND Consultants Ltd | Administrative & support | 2023 |
| Pngr Enterprises Ltd | Information & communication | 2010 |
| PO Contruction Ltd | Construction | 2012 |
| Poblanos Ltd | Hospitality | 2018 |
| Pocock Rutherford & Co. Ltd | Financial services | 2009 |
| Pocock Sanders Limited | Financial services | 2010 |
| Podiva Footcare Ltd | Health & social care | 2026 |
| Poenaru a Ltd | Construction | 2014 |
| Poetry Decoded Ltd | Other services | 2024 |
| POG Collects Ltd | Wholesale & retail | 2026 |
| Poga Properties Limited | Real estate | 2023 |
| Point 1 Solutions Ltd | Information & communication | 2013 |
| Pointe Michel Limited | Professional & scientific | 2019 |
| Poke Card Collectors Ltd | Wholesale & retail | 2026 |
| Poland Street Properties Limited | Real estate | 1949 |
| Polaris Asset Management Limited | Professional & scientific | 2019 |
| Polfam Limited | Real estate | 2017 |
| Polgyn Ltd | Health & social care | 2014 |
| Polka Style Ltd | Manufacturing | 2012 |
| Pollyanna Holdings Limited | Real estate | 2018 |
| Pollys Blinds Limited | Wholesale & retail | 2020 |
| Polski Sklep Nikus Limited | Wholesale & retail | 2009 |
| Polygon Business Services Limited | Information & communication | 2018 |
| Pomodoro DI Napoli Ltd | Hospitality | 2021 |
| Pomodoro Rosso Ltd | Hospitality | 2014 |
| Ponnu Properties Ltd | Real estate | 2023 |
| Poole Property Services Ltd | Construction | 2020 |
| Popa's Services Ltd | Transport & logistics | 2024 |
| Popadevs IT Solutions Ltd | Information & communication | 2020 |
| Popapp Ltd | Information & communication | 2016 |
| Popcorn Chicken Ltd | Hospitality | 2023 |
| Popes Yard Brewery Limited | Manufacturing | 2012 |
| Popshop Agency Ibiza Ltd | Professional & scientific | 2014 |
| Popshop Media Group Ltd | Professional & scientific | 2014 |
| Popshop Studios Ltd | Professional & scientific | 2014 |
| Popstone Ltd | Construction | 2022 |
| Popup Kids Ltd | Education | 2023 |
| Porcelanosa UK Holding Limited | Real estate | 1995 |
| Porcelanosa UK Limited | Wholesale & retail | 1995 |
| Port UK Trading Ltd | Wholesale & retail | 2014 |
| Portanya Technology Limited | Information & communication | 2013 |
| Portcullis Digital Limited | Information & communication | 2016 |
| Portfolio IT Services Ltd | Information & communication | 2019 |
| Portfolio Solutions Limited | Professional & scientific | 2011 |
| Portia Carmen Woodman Ltd | Health & social care | 2022 |
| Portland Leisure Advisers Limited | Real estate | 2024 |
| Portland Publications Limited | Information & communication | 1981 |
| Portman International Property Limited | Professional & scientific | 2013 |
| Portman Investment & Management Limited | Professional & scientific | 2017 |
| Portobello Developments Limited | Construction | 1989 |
| Portone Ltd | Professional & scientific | 2021 |
| Positive Altitude Drones Ltd | Professional & scientific | 2025 |
| Positive Ascent Surveys Ltd | Construction | 2018 |
| Positive Deviant Limited | Administrative & support | 2014 |
| Positive M+E Ltd | Construction | 2017 |
| Positive Power Electrical Services Ltd | Construction | 2024 |
| Positive Power Engineering Limited | Energy | 2016 |
| Positivelink UK Ltd | Administrative & support | 2015 |
| Post Scriptum UK PL Ltd | Information & communication | 2019 |
| Postok LP | | 2017 |
| Potentia & Michael Limited | Arts & recreation | 2016 |
| Potentia HR Ltd | Administrative & support | 2024 |
| Potter Jason Ltd | Other services | 2025 |
| Pouldrew Consulting Limited | Information & communication | 2010 |
| Pound Plus Lease Ltd | Real estate | 2019 |
| POUND2GO Ltd | Wholesale & retail | 2025 |
| Poundplus Mobile Accessories & More Ltd | Wholesale & retail | 2025 |
| Powells Services Ltd | Professional & scientific | 2025 |
| Power Cloud Solutions Ltd | Professional & scientific | 2019 |
| Power Motoring Ltd | Wholesale & retail | 2023 |
| Power Platform Consulting Ltd | Professional & scientific | 2023 |
| Power Solution Construction Ltd | Construction | 2025 |
| Powerpointers Limited | Information & communication | 2013 |
| Powerscroft Limited | Households | 2001 |
| Powersystems PVT Limited | Administrative & support | 2008 |
| Powerup Consulting Ltd | Information & communication | 2019 |
| Poynders Court Limited | Households | 1999 |
| PP Associates Limited | Financial services | 2011 |
| PP Carpenter Ltd | Construction | 2019 |
| PP Pharma Services Ltd | Professional & scientific | 2018 |
| PP Retail UK Ltd | Wholesale & retail | 2014 |
| PP UK Trading Ltd | Wholesale & retail | 2021 |
| PPP UK Group Limited | Financial services | 2019 |
| PPR Consultancy Ltd | Professional & scientific | 2019 |
| PR 2018 Limited | Extraterritorial | 2018 |
| PR International Limited | Wholesale & retail | 1984 |
| PR Plumbing & Building Solutions Ltd | Construction | 2026 |
| PR Techies Ltd | Information & communication | 2021 |
| Praana Consulting Ltd | Information & communication | 2013 |
| Pract Ltd | Professional & scientific | 2025 |
| Practixplus Ltd | Professional & scientific | 2021 |
| Prag Arts Ltd | Information & communication | 2024 |
| Pragati Construction Ltd | Construction | 2020 |
| Pragma - Pro Consultancy Ltd | Professional & scientific | 2020 |
| Pragma Corp Limited | Real estate | 2005 |
| Pragmata Consulting Limited | Professional & scientific | 2019 |
| Pragyaa Technologies Ltd. | Information & communication | 2014 |
| Prahlad DAS Ltd | Wholesale & retail | 2024 |
| Praja Controls & Systems Limited | Wholesale & retail | 2014 |
| Prakash Bhavan Limited | Real estate | 2025 |