| Poindexter Labs Ltd | Information & communication | 2025 |
| Poise Pilates Ltd | Arts & recreation | 2024 |
| Policingmatters Ltd | Education | 2012 |
| Polo Events Ltd | Arts & recreation | 2013 |
| Polobear Ltd | Real estate | 2021 |
| Polonetworks Ltd | Professional & scientific | 2025 |
| Polosolutions Ltd | Agriculture & fishing | 2026 |
| Poolcraft Ltd | Construction | 2019 |
| Popsolve Ltd. | Wholesale & retail | 2005 |
| Porthsawle Management Company Limited | Households | 2011 |
| Portman Morris Ltd | Real estate | 2014 |
| Portnall Associates Limited | Manufacturing | 2010 |
| Power Distro Ltd | Manufacturing | 2023 |
| Powering the Nation Holdings Limited | Real estate | 2018 |
| Powertrack Ltd | Wholesale & retail | 2004 |
| Ppekit Limited | Wholesale & retail | 2011 |
| Pravda Properties Limited | Real estate | 2015 |
| Precision Decor Limited | Construction | 2025 |
| Precision Groundworks Ltd | Construction | 2009 |
| Precision Pass Limited | Arts & recreation | 2011 |
| Preghiera Ltd | Financial services | 2024 |
| Premio Motor Limited | Wholesale & retail | 2026 |
| Premium Travel Tourism Limited | Administrative & support | 2011 |
| Prestige Plant Engineering Ltd | Construction | 2020 |
| Prestigecore Limited | Professional & scientific | 2026 |
| Priest House Ltd | Construction | 2017 |
| Prime Berry Trading Ltd | Wholesale & retail | 2025 |
| Primelux Group Ltd | Administrative & support | 2026 |
| Primetech Audiovisual Limited | Information & communication | 2015 |
| Primoris Contract Solutions Limited | Professional & scientific | 2000 |
| Priocept Limited | Information & communication | 2004 |
| Priory Properties (Windsor) Limited | Construction | 1996 |
| Prism Installations Ltd | Construction | 2016 |
| Private GP Clinic Ltd | Health & social care | 2015 |
| PRN Marketing and Consultancy Limited | Administrative & support | 2011 |
| Probitas Investments Limited | Real estate | 2013 |
| Probos Limited | Extraterritorial | 2013 |
| Proclean One Limited | Administrative & support | 2024 |
| Procs Group Ltd | Professional & scientific | 2024 |
| Proctal Limited | Professional & scientific | 2006 |
| Proflow Mechanical Ltd | Construction | 2026 |
| Proflow Plumbing and Heating Ltd | Administrative & support | 2012 |
| Project AID Ltd | Professional & scientific | 2022 |
| Project Live Free Limited | Information & communication | 2010 |
| Project Management Limited | Professional & scientific | 1970 |
| Prorange Design Ltd | Arts & recreation | 2024 |
| Prosmart Management Limited | Administrative & support | 2017 |
| Prospore Leadership Ltd | Professional & scientific | 2024 |
| PS Polo Limited | Arts & recreation | 2026 |
| Pumphouse Limited | Arts & recreation | 2008 |
| Pumucky Ltd | Information & communication | 2012 |
| Pure Clinic Rooms Ltd | Other services | 2016 |
| Pure Evoo Limited | Hospitality | 2018 |
| Pure Projects Limited | Construction | 2021 |
| Puretta Beauty Ltd | Other services | 2017 |
| Puriflow Ltd | Wholesale & retail | 2026 |
| Purple Puffin Limited | Information & communication | 2011 |
| Purple Rock Management Limited | Real estate | 2021 |
| Purplestone Capital Ltd | Financial services | 2026 |
| Pusey Construction Ltd | Construction | 2022 |
| PVP Management Ltd | Real estate | 2025 |
| PWG Screen Media Ltd | Information & communication | 2005 |
| Q-Ini Ltd | Information & communication | 2016 |
| Qcrm Limited | Information & communication | 2015 |
| QPR Limited | Arts & recreation | 1991 |
| Qtagit Limited | Information & communication | 2024 |
| Quaerit Consultants LP | | 2016 |
| Quaerit Consultants Ltd | Professional & scientific | 2011 |
| Quakehart Limited | Professional & scientific | 1984 |
| Quantum Quality Control Limited | Other services | 2009 |
| Queensbury Developments Limited | Real estate | 1997 |
| Quercus Films Ltd | Information & communication | 2022 |
| Quickserver Limited | Wholesale & retail | 2005 |
| Quicksilver Technology Limited | Manufacturing | 1973 |
| Quivr Consulting Ltd | Professional & scientific | 2024 |
| Quoin Group Limited | Real estate | 2016 |
| Quorus Property Group Limited | Real estate | 2014 |
| R Squared Advisory Limited | Professional & scientific | 2024 |
| R&S Berry Ltd | Professional & scientific | 2020 |
| Race Marketing Associates Limited | Arts & recreation | 1990 |
| Rada Healing Limited | Professional & scientific | 2023 |
| Rada Inspirational Limited | Professional & scientific | 2023 |
| Rada Mipad Limited | Professional & scientific | 2023 |
| Rada Property Holdings Limited | Real estate | 2023 |
| Rada Unearthed Limited | Professional & scientific | 2023 |
| Rada Wellness Limited | Professional & scientific | 2023 |
| Radio Ascot Ltd | Information & communication | 2020 |
| Ragc Limited | Arts & recreation | 2001 |
| RAI Fitness Ltd | Arts & recreation | 2019 |
| Rainbow Creative Services Ltd | Professional & scientific | 2020 |
| RAJ Kang Creative Limited | Professional & scientific | 2025 |
| Raja K Ltd | Information & communication | 2023 |
| Rajbhoog Tandoori Ltd | Hospitality | 2025 |
| Ramsay Capital Ltd | Professional & scientific | 2020 |
| Ranelagh Springs Ltd | Information & communication | 2022 |
| Rani Supply Ltd | Wholesale & retail | 2025 |
| Rannoch Road Films Limited | Professional & scientific | 2017 |
| Rationale Consultancy Ltd | Information & communication | 2009 |
| Ravneet Sirha Gynaecology Ltd | Health & social care | 2025 |
| Razione Ltd | Other services | 2021 |