| Platypodes Consulting Limited | Professional & scientific | 2019 |
| Play Concepts Ltd | Information & communication | 2020 |
| Play Included C.I.C. | Professional & scientific | 2018 |
| Playfusion Ltd | Information & communication | 2019 |
| Playfusion Publishing Ltd | Information & communication | 2024 |
| Playphysio C.I.C. | Professional & scientific | 2017 |
| Playtank CIC | Other services | 2019 |
| Pleasant Stays Limited | Real estate | 2019 |
| Pleasure Culture Media Limited | Information & communication | 2024 |
| Pleiades Capital Limited | Financial services | 2019 |
| Pleiadian UK Ltd | Real estate | 2021 |
| Plethos Consulting Limited | Professional & scientific | 2015 |
| Plip Media Ltd | Information & communication | 2023 |
| Pliqui Group Limited | Financial services | 2025 |
| Plms (Cambridge) Limited | Construction | 2012 |
| Plotdeck Ltd | Information & communication | 2021 |
| PLS Residential Properties Limited | Real estate | 2026 |
| Plug-Ins Limited | Information & communication | 2001 |
| Plum Tree Hair & Beauty Limited | Other services | 2017 |
| Plumb & SON Ltd | Real estate | 2017 |
| Plumb Tree Financial Services Limited | Professional & scientific | 2026 |
| Plumbox Limited | Construction | 2018 |
| Plumbs Dairy Limited | Hospitality | 2011 |
| Plumptre Management Company Limited | Households | 1999 |
| Plumtree and Crossland Limited | Financial services | 2018 |
| Plurabelle Books Limited | Wholesale & retail | 2008 |
| Plurify Ltd | Professional & scientific | 2023 |
| Plusgenie Limited | Information & communication | 2012 |
| Plush Puppies Limited | Wholesale & retail | 2022 |
| Plusvite Limited | Professional & scientific | 2008 |
| PLX Group Ltd. | Administrative & support | 2022 |
| PLX UK Limited | Professional & scientific | 2020 |
| Plymouth Online Limited | Education | 2021 |
| Plyton Technology Limited | Wholesale & retail | 2024 |
| PM Build 1 Limited | Construction | 2025 |
| PM Capital Ltd | Real estate | 2018 |
| PM Construction Consultants Limited | Professional & scientific | 2007 |
| PM Packaging Ltd | Wholesale & retail | 2026 |
| PMA Consulting Solutions Limited | Administrative & support | 2025 |
| PMB Theatre & Exhibition Services Ltd | Manufacturing | 1996 |
| PMD Civils Ltd | Construction | 2014 |
| Pmdla Limited | Health & social care | 2025 |
| PML Electrical Ltd | Construction | 2022 |
| PMW Composites Ltd | Manufacturing | 2019 |
| PMY Services Ltd | Manufacturing | 2016 |
| Pneumacare Limited | Manufacturing | 2008 |
| PNP Internation Company Ltd | Manufacturing | 2023 |
| Pocket Productions Ltd | Information & communication | 2019 |
| Pockit Diagnostics Ltd | Professional & scientific | 2017 |
| Pocock & Shaw Cambridge Limited | Professional & scientific | 2016 |
| Pocock & Shaw Limited | Real estate | 1999 |
| POD Orlem Ltd | Wholesale & retail | 2014 |
| Podcast Space Ltd | Manufacturing | 2025 |
| Podfloor Limited | Construction | 2007 |
| Podiatry LAB London Ltd | Health & social care | 2026 |
| Podium BIO Limited | Professional & scientific | 2021 |
| Pogo Design Limited | Professional & scientific | 2020 |
| Pointers Aviation Ltd | Manufacturing | 2019 |
| Poke Stop Ltd | Hospitality | 2023 |
| Pokitquote Ltd | Information & communication | 2026 |
| Polak Aviation Ltd | Manufacturing | 2023 |
| Poland Biology Amino Acid Chemical Share Co., Ltd | Mining & quarrying | 2025 |
| Polar Bear Plus Limited | Manufacturing | 2021 |
| Polar Solutions Limited | Administrative & support | 2009 |
| Polar View Earth Observation Limited | Information & communication | 2011 |
| Polaris Launchpad Ltd | Other services | 2025 |
| Polaris Pharma Ltd | Health & social care | 2015 |
| Polarisx Ltd | Information & communication | 2023 |
| Pole to Pole Wine Ltd | Wholesale & retail | 2022 |
| Poli Mapa Properties Limited | Real estate | 2022 |
| Polirs Limited | Wholesale & retail | 2025 |
| Polish Market Jess Cambridge Limited | Wholesale & retail | 2012 |
| Polite Roofing Ltd | Construction | 2017 |
| Pollux Consulting Limited | Information & communication | 2013 |
| Poly Composites Limited | Manufacturing | 2022 |
| Poly Pages Ltd | Information & communication | 2021 |
| Polybius Communications Limited | Information & communication | 2015 |
| Polycapture Limited | Professional & scientific | 2021 |
| Polymer Bionics Limited | Professional & scientific | 2021 |
| Polypharmakos Limited | Professional & scientific | 2016 |
| Polyphony HR Limited | Professional & scientific | 2024 |
| Polypouch ( UK ) Ltd | Manufacturing | 2010 |
| Polysolar Limited | Professional & scientific | 2007 |
| Polytec Personnel Limited | Administrative & support | 1984 |
| Polytecks Ltd | Manufacturing | 2025 |
| Polytrusion Limited | Extraterritorial | 2020 |
| Polyward Ltd. | Information & communication | 2025 |
| Polywin International Trading Limited | Wholesale & retail | 2023 |
| Pomolumi Ltd | Wholesale & retail | 2012 |
| Ponders Travel Ltd | Administrative & support | 2010 |
| Pool Perfection Limited | Other services | 2010 |
| Pooley Financial Planning Ltd | Professional & scientific | 2021 |
| POP Collective CIC | Education | 2025 |
| Popa MIHAITA94 JET Aviation Ltd | Manufacturing | 2023 |
| Popleaf Limited | Information & communication | 2014 |
| Popplewell Acoustics Limited | Construction | 2020 |
| Poppyfields Meadow (Allestree) Management Company Limited | Households | 2016 |
| Porgiesoft Ltd | Information & communication | 2018 |
| Poro Technologies Ltd | Manufacturing | 2018 |
| Porson Court Associates Limited | Households | 1989 |