| Panier Retail Limited | Wholesale & retail | 2024 |
| Paqualife Ltd | Wholesale & retail | 2021 |
| Parallax Pictures Media Ltd | Information & communication | 2025 |
| Paramount Island Ltd | Information & communication | 2025 |
| Parcel Pilot Limited | Transport & logistics | 2025 |
| Parisot Limited | Professional & scientific | 2017 |
| Parkhouse Farm Bath Ltd | Hospitality | 2025 |
| Parliberty Ltd | Financial services | 2019 |
| Parmelion LLP | | 2011 |
| Partabpura Ltd | Real estate | 2025 |
| Pashu Construction Ltd | Construction | 2022 |
| Paszenda Ltd | Other services | 2026 |
| Patricia Maxwell Ltd | Professional & scientific | 2022 |
| Pattinson. Limited | Hospitality | 2026 |
| Paul Furrer & Co Limited | Professional & scientific | 2012 |
| Paulmarc Contracts Limited | Energy | 2017 |
| Pavilion Glazing Ltd | Construction | 2025 |
| PAY With Quick Limited | Information & communication | 2025 |
| Payne Housing Ltd | Real estate | 2018 |
| Payroll (UK) Limited | Professional & scientific | 2003 |
| Payroll Contracts Ltd | Administrative & support | 2022 |
| PB Southern Capital Ltd | Real estate | 2017 |
| PBH Precision Engineering Co. Limited | Manufacturing | 1951 |
| PBT Capital Ltd | Financial services | 2025 |
| PC Barc Limited | Information & communication | 2007 |
| PCC Leasing Services Limited | Professional & scientific | 2010 |
| PDD Holdco Limited | Real estate | 2026 |
| Peace Egham Limited | Hospitality | 2025 |
| Peak Pursuits Properties Ltd | Real estate | 2023 |
| Pegasus Supplies Limited | Other services | 2024 |
| Pelham Services Limited | Transport & logistics | 2025 |
| Pellas Ltd | Real estate | 2024 |
| Pentara AI Ltd | Information & communication | 2024 |
| Pentara Group Ltd | Professional & scientific | 2024 |
| Pentara Logistics Ltd | Other services | 2024 |
| Peony Events Limited | Administrative & support | 2015 |
| Peras Asset and Environmental Management UK Ltd | Extraterritorial | 2006 |
| Perfecta-Uk Ltd | Wholesale & retail | 2021 |
| Persica Limited | Wholesale & retail | 2021 |
| Petaworks Limited | Information & communication | 2015 |
| Peter Lawrence Stallworthy and Associates LLP | | 2009 |
| PH Food & Wine LTS Ltd | Wholesale & retail | 2018 |
| Pharmabridge Ltd | Wholesale & retail | 2025 |
| Pharmekon Ltd | Administrative & support | 2017 |
| Phex Properties Ltd | Real estate | 2023 |
| Phill FRY Ltd | Wholesale & retail | 2021 |
| Phloatin Limited | Professional & scientific | 2016 |
| Phoenix Awakening Limited | Education | 2023 |
| Phoenix ECS Limited | Construction | 2001 |
| Phoenix Stiftung International Ltd | Other services | 2024 |
| Phoenix Way Car Dealership Limited | Wholesale & retail | 2016 |
| Phoenix Wholesource Limited | Wholesale & retail | 2024 |
| PHP Perrtheo Limited | Information & communication | 2010 |
| Pido Group Holding Ltd | Financial services | 2026 |
| Pieter & Jolanda Property Ltd | Real estate | 2024 |
| Pineoak Management Limited | Real estate | 1998 |
| Pineoak Remanco Limited | Real estate | 2003 |
| Pink Kite Limited | Information & communication | 2023 |
| Pinnacle Brit Care Ltd | Administrative & support | 2014 |
| Pinnacle Brit Limited | Health & social care | 2018 |
| Pinpoint One Ltd | Professional & scientific | 2018 |
| Pinten Consultancy Limited | Professional & scientific | 2026 |
| Pippcoin.Eu* Ltd | Professional & scientific | 2022 |
| Piqpaq Properties Ltd | Real estate | 2018 |
| Piran Properties Limited | Construction | 2017 |
| Planning and Design Services Ltd | Professional & scientific | 2015 |
| Planwood Properties Limited | Construction | 2007 |
| Platform 195 Ltd | Information & communication | 2019 |
| Platinum Air Ltd | Energy | 2026 |
| Platinus Ltd | Professional & scientific | 2024 |
| Playpower UK Limited | Professional & scientific | 2005 |
| Please Buy Trade Limited | Other services | 2024 |
| Pleasure Residential Limited | Real estate | 2021 |
| Plenaverde Ltd | Financial services | 2021 |
| Plenex Health Ltd | Other services | 2026 |
| Plexus Europe Limited | Professional & scientific | 1983 |
| PLS Transportation Ltd | Transport & logistics | 2022 |
| Plugwerkz Ltd. | Manufacturing | 2023 |
| Plymouth Care Home Limited | Health & social care | 2025 |
| Pocket Aces Property Ltd | Hospitality | 2026 |
| Podt Property Investments Ltd | Real estate | 2020 |
| Podt Property Trading Ltd | Real estate | 2020 |
| Pokedomuk Limited | Wholesale & retail | 2025 |
| Polantra Limited | Manufacturing | 2025 |
| Polestar Real Estate Ltd | Real estate | 2024 |
| Polow Limited | Hospitality | 2017 |
| Pomme Poire Ltd | Hospitality | 2024 |
| Ponzu Ltd | Health & social care | 2020 |
| Poogi Ltd | Real estate | 2017 |
| Pooleycan Ltd | Hospitality | 2024 |
| Pork N' Waffle Ltd | Hospitality | 2024 |
| Portz Fastgood Ltd | Real estate | 2025 |
| Positive Dyslexia Limited | Professional & scientific | 2016 |
| Ppy-R Ltd | Real estate | 2021 |
| Pragusa.One Ltd | Financial services | 2020 |
| Prana Paradise Ltd | Other services | 2024 |
| Precious Pets Ltd | Other services | 2025 |
| Preez & Wilk Properties Ltd | Real estate | 2023 |
| Premier Cafe (Egham) Limited | Hospitality | 2014 |
| Premier Material Supplies Limited | Construction | 1998 |