| Pjmps Ltd | Extraterritorial | 2012 |
| Pkjc Developments Ltd | Real estate | 2024 |
| Placesecure Property Management Limited | Real estate | 1991 |
| Plaid Tech Ltd | Information & communication | 2016 |
| Plan Ahead Financial Ltd | Financial services | 2006 |
| Plan Ahead Properties Ltd | Professional & scientific | 2004 |
| Planet Equity Group Ltd | Administrative & support | 2013 |
| Planet Pharma Staffing Limited | Administrative & support | 2013 |
| Plangreen Limited | Real estate | 2009 |
| Plant Heritage Holdings Ltd | Real estate | 2024 |
| Platform 9 Pictures Limited | Information & communication | 2013 |
| Platform Engineering Ltd | Professional & scientific | 2011 |
| Platinum Holidays Limited | Administrative & support | 2016 |
| Platinum Medical Event Cover Ltd | Education | 2024 |
| Player Support Services Ltd | Arts & recreation | 2020 |
| Playskan Ltd | Information & communication | 2025 |
| Playtime Films Ltd | Information & communication | 2025 |
| Playtrio Limited | Manufacturing | 2013 |
| Plebu Ltd | Information & communication | 2020 |
| Plough Enterprises Limited | Real estate | 2016 |
| Plsgroupuk Ltd | Agriculture & fishing | 2020 |
| Plusside Ltd | Information & communication | 2024 |
| Plusuno Limited | Professional & scientific | 2013 |
| Plutos Team Agent Ltd | Transport & logistics | 2020 |
| Ply-Line Services Ltd. | Wholesale & retail | 2001 |
| PM Sports Management Ltd | Arts & recreation | 2015 |
| PM3 Limited | Information & communication | 2004 |
| PMW HR Consulting Limited | Professional & scientific | 2012 |
| PN IP Holdings Limited | Administrative & support | 2016 |
| PNF Fencing Ltd | Construction | 2015 |
| Pnlp Limited | Information & communication | 2014 |
| Poco Loco Pictures Ltd | Financial services | 2024 |
| Point Advice 1 Limited | Construction | 2025 |
| Point Advice 2 Limited | Construction | 2025 |
| Pointadvice Limited | Construction | 2002 |
| Polar Bear Studios Limited | Arts & recreation | 2024 |
| Pollypocket Productions Limited | Information & communication | 2024 |
| Pollys Pubs Ltd | Hospitality | 2026 |
| Polo Construction Limited | Construction | 2013 |
| Pond II Co-Investment L.P. | | 2008 |
| Pond Ventures I L.P. | | 1998 |
| Pond Ventures II L.P. a | | 2000 |
| Pond Ventures II L.P. B | | 2000 |
| Pond Ventures III a L.P. | | 2005 |
| Pond Ventures III Associates L.P. | | 2005 |
| Pond Ventures III B L.P. | | 2005 |
| Pontdulac Holdings Limited | Financial services | 2025 |
| Pooch London Limited | Wholesale & retail | 2021 |
| Poor in Need Limited | Education | 2018 |
| Portercole Enterprises Limited | Hospitality | 2014 |
| Portland Terrace Management Company Limited | Households | 1996 |
| Portobello Road Market Bags Ltd | Wholesale & retail | 2023 |
| Posh in KEW Ltd | Other services | 2018 |
| Postbox-Courier Ltd. | Transport & logistics | 2012 |
| Postnatal Wellbeing Ltd | Health & social care | 2020 |
| Pottergate Management Company Limited | Real estate | 2009 |
| Potterplans Ltd | Professional & scientific | 2011 |
| Poughkeepsie Limited | Information & communication | 2004 |
| Powar Limited | Health & social care | 2006 |
| Powder White Limited | Administrative & support | 2003 |
| Powder White Lite Limited | Administrative & support | 2009 |
| Power by Light Ltd | Professional & scientific | 2018 |
| Power Sales Solutions Limited | Professional & scientific | 2023 |
| Power System Design Services Limited | Professional & scientific | 2014 |
| Powerline Surveying Ltd | Construction | 2012 |
| Powordful Limited | Professional & scientific | 2012 |
| Pozi Joist Ltd | Professional & scientific | 2024 |
| PP Consultancy Services Ltd | Professional & scientific | 2015 |
| PQP Ltd | Information & communication | 2024 |
| PR Entertainments Limited | Hospitality | 1984 |
| Praevisum Limited | Information & communication | 2021 |
| Prdc Management Limited | Financial services | 2007 |
| Precipuus Events Limited | Administrative & support | 2009 |
| Precise Plastics Limited | Manufacturing | 1990 |
| Precision Cleaning Ltd | Administrative & support | 2017 |
| Precision Engineering Equipment Ltd | Professional & scientific | 2024 |
| Preeman Limited | Health & social care | 2005 |
| Preemantott Limited | Health & social care | 2011 |
| Premier Business Advisors Ltd | Professional & scientific | 2018 |
| Premier Investments 2 Ltd | Real estate | 2021 |
| Premier Martial Arts Ltd | Education | 2022 |
| Premier Taxis (Catterick & Richmond) Ltd | Transport & logistics | 2018 |
| Premiere Conferencing (UK) Limited | Information & communication | 2001 |
| Premium Information Services Limited | Information & communication | 2007 |
| Prepplus Ltd | Education | 2019 |
| Preselect Assured Tenancy Limited | Real estate | 1989 |
| Pressed at KEW Ltd | Manufacturing | 2026 |
| Prestige Auto Buyers Limited | Wholesale & retail | 2020 |
| Prestige Property ER Ltd | Wholesale & retail | 2023 |
| Prevented Ocean Plastic Ltd | Extraterritorial | 2023 |
| Previsions Software Limited | Information & communication | 2021 |
| Prezzomolo Ltd | Real estate | 2026 |
| Price Property Limited | Real estate | 2004 |
| Pride Hospitality Crew Ltd | Hospitality | 2022 |
| Pridenature Limited | Real estate | 1995 |
| Pridium Ltd | Real estate | 2015 |
| Prime Dealing Ventures UK Ltd | Real estate | 2016 |
| Prime Path Properties Ltd | Real estate | 2023 |
| Prime Village Limited | Other services | 2006 |
| Primeline Cars Ltd | Transport & logistics | 2015 |