| Pillarpoint Construction Limited | Construction | 2025 |
| Pillowpoint Ltd | Real estate | 2025 |
| Piml Education Consutants PTY Ltd | Professional & scientific | 2022 |
| Pimlico Developments Ltd | Construction | 2024 |
| Pimlico Holdings Limited | Administrative & support | 2017 |
| Pin-Trace Ltd | Information & communication | 2018 |
| Pinaaki Solutions Ltd | Information & communication | 2023 |
| Pineapple Apartaments Ltd | Real estate | 2025 |
| Pineapple&Co Ltd | Information & communication | 2024 |
| Pinemere Limited | Professional & scientific | 2026 |
| Pinewood Computer Services (Bucks) Ltd | Information & communication | 2011 |
| Pinewood Construction and Landscaping Ltd | Construction | 2025 |
| Pinewood Nurseries Ltd | Agriculture & fishing | 2007 |
| Pink OWL Ltd | Health & social care | 2025 |
| Pinkdoor Services Ltd | Education | 2022 |
| Pinkfoxboutique Ltd | Wholesale & retail | 2024 |
| Pinksalt Collections Ltd | Wholesale & retail | 2025 |
| Pinky Investments Limited | Administrative & support | 2018 |
| Pinnacle Flooring Solutions Limited | Construction | 2021 |
| Pinnacle Motors Ltd | Wholesale & retail | 2024 |
| Piomer Trans Ltd | Transport & logistics | 2016 |
| Pioneer Educational Trust | Education | 2010 |
| Pioneer GB Limited | Professional & scientific | 1952 |
| Pioneer Glass Ltd | Construction | 2025 |
| Pioneer Sporting Goods Ltd | Wholesale & retail | 2025 |
| Piotrek Construction Ltd | Construction | 2005 |
| Piotrowski Construction Ltd | Construction | 2015 |
| PIP Property (UK) Limited | Extraterritorial | 2015 |
| Pipd Consultancy Ltd | Administrative & support | 2018 |
| Pipp LLP | | 2011 |
| Pirah Ltd | Wholesale & retail | 2023 |
| Pisces London Clothing Ltd | Wholesale & retail | 2022 |
| Pitch Black Pikka Ltd | Information & communication | 2020 |
| Pitchermen Ltd | Manufacturing | 2025 |
| Pitican Transport Ltd | Transport & logistics | 2024 |
| Pitstop Tyre Centre (Hayes) Limited | Other services | 2010 |
| Pitts Stop Food & Wines Ltd | Wholesale & retail | 2017 |
| Pivotum Group Limited | Construction | 2026 |
| Piwko Automotive Ltd | Wholesale & retail | 2016 |
| Pixco Limited | Wholesale & retail | 2024 |
| Pixels London Limited | Manufacturing | 2024 |
| Piyali Consultancy Services Ltd | Information & communication | 2023 |
| Piyerf Ltd | Wholesale & retail | 2025 |
| Pizza Delite and Peri Peri Limited | Hospitality | 2020 |
| Pizza Hub Slough Ltd | Hospitality | 2025 |
| Pizza Master 2025 Limited | Hospitality | 2026 |
| Pizzaology Ltd | Hospitality | 2024 |
| Pizzasi Catering Ltd | Hospitality | 2023 |
| Pizzasi Distribution UK Ltd. | Wholesale & retail | 2014 |
| PJ Care Limited | Health & social care | 2000 |
| PJ Care Property Limited | Real estate | 2022 |
| PJ Global Limited | Information & communication | 2025 |
| PK Sprayer Ltd | Construction | 2025 |
| PK Tech Gurus Ltd | Information & communication | 2025 |
| PK Westlands Ltd | Transport & logistics | 2020 |
| Pkaswholesale Ltd | Wholesale & retail | 2026 |
| PKE Capital Ltd | Real estate | 2023 |
| Pkkkm Catering Limited | Hospitality | 2025 |
| PL3D Limited | Professional & scientific | 2016 |
| PL8TES Limited | Wholesale & retail | 2025 |
| Plabmaster Online Limited | Professional & scientific | 2019 |
| Placate Group Limited | Wholesale & retail | 2025 |
| PLACE2STAY Limited | Real estate | 2017 |
| Placeable Limited | Administrative & support | 2021 |
| Places for Creatives Ltd | Hospitality | 2023 |
| Placid Facilities Management Ltd | Administrative & support | 2007 |
| Planet Digital Solutions Ltd | Information & communication | 2021 |
| Planetpacks Ltd | Manufacturing | 2022 |
| Planex Solutions Limited | Wholesale & retail | 2016 |
| Planit Enterprises Ltd | Wholesale & retail | 2023 |
| Plaskett Property Management Limited | Real estate | 2020 |
| Plasma Lighting Limited | Manufacturing | 2021 |
| Platinum Airport Travel Ltd | Administrative & support | 2026 |
| Platinum Executive Ltd | Transport & logistics | 2019 |
| Platinum Group Global Ltd | Other services | 2025 |
| Platinum Healthcare Staffing Limited | Administrative & support | 2021 |
| Platinum Plus Limited | Wholesale & retail | 2020 |
| Platinum Prints & Embroidery Ltd | Manufacturing | 2026 |
| Platinum Residential Property Management Limited | Real estate | 2004 |
| Platolabs Ltd | Information & communication | 2026 |
| Platter House Ltd | Hospitality | 2026 |
| Playmaker 360 Ltd | Professional & scientific | 2023 |
| PLC Cloud Technologies Limited | Information & communication | 2024 |
| Plcd Associates Ltd | Professional & scientific | 2003 |
| Plot Construct Ltd | Construction | 2025 |
| PLS Building Services Limited | Construction | 2017 |
| Plugged Inn Ltd | Administrative & support | 2024 |
| Plumbing Care Centre Ltd | Construction | 2020 |
| Plumbing Solutions Ltd | Construction | 2007 |
| Plumbing, Heating and GAS Experts Ltd | Construction | 2015 |
| Plumbland Ltd | Construction | 2025 |
| Plumefern Limited | | 1937 |
| Plumtree Creative Ltd | Professional & scientific | 2013 |
| Plus Info Ltd | Construction | 2010 |
| Plutus Software Ltd | Information & communication | 2022 |
| Plwp Limited | Wholesale & retail | 2011 |
| PM & C International Ltd | Real estate | 2021 |
| PM & Charles Properties Ltd | Real estate | 2018 |
| PM Consultancy 2026 Limited | Professional & scientific | 2025 |
| PM Contracting & Consulting Ltd. | Professional & scientific | 2017 |