| Plumboy Security Ltd | Administrative & support | 2021 |
| Plumridge & Co. Philatelic Auctions Ltd | Other services | 2020 |
| PMC Endeavour Ltd | Financial services | 2021 |
| PMD Block Management Limited | Households | 1995 |
| Pmdx Limited | Information & communication | 2026 |
| Pmfoodsonline Ltd | Extraterritorial | 2022 |
| Pmvm Investments Ltd | Real estate | 2022 |
| PNC Lettings Ltd | Real estate | 2022 |
| PNC Smart Solutions Limited | Wholesale & retail | 2024 |
| PNC Unique Limited | Wholesale & retail | 2013 |
| PNG Medicare Limited | Health & social care | 2013 |
| Point to Point Conveyors Limited | Professional & scientific | 2021 |
| Pointeuro V Limited | Professional & scientific | 1999 |
| Polaris Training Solutions Ltd | Education | 2025 |
| Poli Maxi Foods Ltd | Wholesale & retail | 2018 |
| Polii Maxx Ltd | Wholesale & retail | 2025 |
| Politale Ltd | Wholesale & retail | 2018 |
| Polka DOT Events Management Ltd | Administrative & support | 2018 |
| Polpark Limited | Professional & scientific | 1992 |
| Polyaire Limited | Energy | 1993 |
| Pond Orbis Ltd | Wholesale & retail | 2025 |
| Pont Street Medical Limited | Health & social care | 2025 |
| Pontillion Property Services Limited | Real estate | 2021 |
| Pooch and Mutt Limited | Wholesale & retail | 2007 |
| Pooja Caterers Limited | Hospitality | 2023 |
| Poole Enterprises Limited | Hospitality | 2022 |
| Poplars Farm Developments Ltd | Construction | 2015 |
| Poppy Dog Love Ltd | Wholesale & retail | 2025 |
| Poppy Print Limited | Manufacturing | 2008 |
| Portland Business Support Ltd | Professional & scientific | 2019 |
| Positive Educational Psychology Ltd | Education | 2010 |
| Possession (Corby) Management Company Limited | Households | 2007 |
| Potbelly Brewery Limited | Manufacturing | 2004 |
| Povoas Packaging Limited | Manufacturing | 1954 |
| Power Electronics & Controls Limited | Manufacturing | 1984 |
| Powerdriver UK Limited | Extraterritorial | 2010 |
| Powke Limited | Extraterritorial | 1960 |
| Poziar's Wheels & Tyres Ltd | Wholesale & retail | 2016 |
| PPN RA Limited | Education | 2013 |
| PPS Strategies UK Ltd | Professional & scientific | 2017 |
| Ppsa Sourcing Limited | Professional & scientific | 2022 |
| PPX Consulting Ltd | Professional & scientific | 2019 |
| Praise and Worship Ltd | Other services | 2013 |
| PRB Ophthalmic Services Limited | Health & social care | 2019 |
| Pre-Check Solutions Ltd | Administrative & support | 2023 |
| Precious Metals (UK) Limited | Manufacturing | 2014 |
| Precise Initial Surveys Ltd | Professional & scientific | 2026 |
| Precision 14 Ltd | Construction | 2022 |
| Precision ARC Engineering Ltd | Manufacturing | 2021 |
| Precision Build Complete Ltd | Construction | 2022 |
| Precision Development Limited | Real estate | 2020 |
| Predator Batteries Ltd | Wholesale & retail | 2022 |
| Prem Construction Limited | Hospitality | 1997 |
| Premier Car Supermarket Kettering Ltd | Wholesale & retail | 2022 |
| Premier Compressor Services Limited | Administrative & support | 1999 |
| Premier International-Trans Limited | Transport & logistics | 2019 |
| Premier Lettings (Northants) Ltd | Real estate | 2023 |
| Premier Level Scaffolding Limited | Construction | 2025 |
| Premier Portfolio Management Ltd | Real estate | 2020 |
| Premier Wood Flooring Ltd | Construction | 2016 |
| Premio Developments Limited | Construction | 2017 |
| Premio Investments Limited | Real estate | 2020 |
| Premium Care Solutions Limited | Health & social care | 2014 |
| Premium Playground Inspections Limited | Construction | 2022 |
| Prescott Developments Limited | Construction | 2002 |
| Prescreenme Ltd | Administrative & support | 2017 |
| Prestige Cars Burton Latimer Ltd | Wholesale & retail | 2024 |
| Prestige Concrete Flooring Limited | Construction | 2018 |
| Prestige Design & Build (UK) Ltd | Real estate | 2011 |
| Prestige Plastering & Renovations Limited | Construction | 2007 |
| Prestige Properties (NW) Limited | Real estate | 2017 |
| Prestige Properties (NW4) Ltd | Real estate | 2021 |
| Prestige Properties NW 243 Ltd | Real estate | 2019 |
| Prestige Properties Serviced Accommodation Ltd | Real estate | 2020 |
| Prestige Render Systems Limited | Extraterritorial | 2018 |
| Presto Property Buyers Ltd | Real estate | 2021 |
| Pretraga Capital Limited | Real estate | 2023 |
| Pretraga Partners Limited | Administrative & support | 2021 |
| Pretty Little Lashes & Aesthetics Ltd | Other services | 2024 |
| Price & Mayers Limited | Construction | 2013 |
| Price Automotive Services Limited | Wholesale & retail | 1994 |
| Price Investment Group Limited | Real estate | 2026 |
| Pride&Joy KOI Ltd | Wholesale & retail | 2023 |
| Prifti Plumbing & Builders Ltd | Construction | 2026 |
| Prigmore Haulage Ltd | Transport & logistics | 2012 |
| Prigmore Properties Limited | Real estate | 2022 |
| Prime Cabs Ltd | Transport & logistics | 2020 |
| Prime Electrical Services (Midlands) Ltd | Construction | 2023 |
| Prime GAS Services Limited | Manufacturing | 2022 |
| Prime Kare Investments Ltd | Real estate | 2022 |
| Prime Properties Kettering Ltd | Real estate | 2026 |
| Prime-Kare Limited | Real estate | 2009 |
| Primecare Properties Limited | Construction | 2014 |
| Primefire Boiler Specialists Ltd | Construction | 2026 |
| Primitive Services Limited | Transport & logistics | 2021 |
| Primolux Limited | Professional & scientific | 2011 |
| Primordial Soap Ltd | Manufacturing | 2023 |
| Primoris Aero Consult Ltd | Professional & scientific | 2025 |
| Primrose Gallery Limited | Wholesale & retail | 2025 |
| Printmaking Services Limited | Manufacturing | 2026 |