| Pizza WOW Kitchen Limited | Hospitality | 2022 |
| Pizza WOW Ltd | Hospitality | 2020 |
| Pizzastyle Ltd | Hospitality | 2025 |
| PJS Audio Ltd | Information & communication | 2017 |
| Planning for Affordable Housing Ltd | Professional & scientific | 2026 |
| Plant Trader Ltd. | Wholesale & retail | 2019 |
| Platinum Search Recruitment Limited | Administrative & support | 2025 |
| Platonoff & Harris Limited | Construction | 1992 |
| Platonoff Joinery Classics Ltd | Construction | 2025 |
| Players Inc Limited | Other services | 2002 |
| Plesilium Ltd | Professional & scientific | 2011 |
| Plover Mills Management Company Limited | Households | 2008 |
| Plum Blossom Protects Ltd | Financial services | 2022 |
| Plumbistry Limited | Construction | 2009 |
| Plumpton House Limited | Real estate | 1961 |
| Plush Padel Limited | Wholesale & retail | 2025 |
| PM Sykala & Sons Ltd | Real estate | 2024 |
| Pochins Bridge Management Company Limited | Households | 2003 |
| Pocket and Hatster Limited | Professional & scientific | 2018 |
| Point Design-Uk Limited | Information & communication | 2022 |
| Pola Car Wash Ltd | Other services | 2019 |
| Polybead Insulation UK Ltd | Construction | 2008 |
| Polytricity Ltd | Professional & scientific | 2022 |
| Pooles Lane Freehold Limited | Households | 2017 |
| Poplars Residents Management Company Limited | Households | 2005 |
| Poppy Place (Driffield) Management Company Limited | Households | 2025 |
| Popworks Management Limited | Real estate | 2019 |
| Port Loop Parcel F Management Limited | Households | 2025 |
| Port Loop Phase 2 Residents Management Company Limited | Households | 2020 |
| Poultry VET Services Ltd | Professional & scientific | 2022 |
| Power Property Group Limited | Real estate | 2025 |
| Power Property Services Group Limited | Real estate | 2023 |
| Power Retail Surveying Ltd | Professional & scientific | 2024 |
| Powerhaus Events Ltd | Arts & recreation | 2025 |
| PR Origins Ltd | Administrative & support | 2013 |
| Premier Building Services (Herts) Ltd | Construction | 2020 |
| Premier M Management & Co Limited | Financial services | 2026 |
| Premier Treatment Ltd | Other services | 2018 |
| Premium Client Services Ltd | Administrative & support | 2024 |
| Premium Roofing Products Limited | Wholesale & retail | 1995 |
| Premium Snacks Limited | Wholesale & retail | 2015 |
| Premonit Limited | Transport & logistics | 1959 |
| Prestige A&A Power Ltd | Transport & logistics | 2026 |
| Prestige Chalets Limited | Hospitality | 2025 |
| Prestwick Drive Management Company Limited | Households | 2026 |
| Prime Lifestyle Group Ltd | Administrative & support | 2025 |
| Prime Opps Limited | Construction | 2014 |
| Primedevice Ltd | Wholesale & retail | 2025 |
| Primestone Financial Ltd | Financial services | 2025 |
| Primo Piatto Ltd | Hospitality | 2019 |
| Primrose Capital Investments Ltd | Real estate | 2024 |
| Princes Mews (Royston) Limited | Households | 2012 |
| Priory Chase Management Company Limited | Households | 2007 |
| Priory Gate Hillingdon Management Company 2 Limited | Households | 2000 |
| Priory Park (Corby) NO 2 Resident Management Company Limited | Households | 2018 |
| Priory Park (Corby) Residents Management Company Limited | Households | 2016 |
| Priory Park (Marcham) Management Company Limited | Households | 2014 |
| Pro Block Management Limited | Real estate | 2018 |
| Pro Construction BP Limited | Construction | 2019 |
| Proactiv Rehabilitation & Reintegration Services Limited | Health & social care | 2014 |
| Proactive Block Management Limited | Real estate | 2015 |
| Proactive Safety Services UK Limited | Professional & scientific | 2016 |
| Proheating 24/7 Ltd | Construction | 2017 |
| Project Administration Limited | Administrative & support | 2026 |
| Project View Ltd | Professional & scientific | 2024 |
| Propel Fitness Ltd | Arts & recreation | 2025 |
| Property Asset Investments Limited | Administrative & support | 2009 |
| Property Compliance Services Limited | Real estate | 2009 |
| Property Investment Acquisition Living Ltd | Real estate | 2026 |
| Property Management Software Limited | Information & communication | 2022 |
| Propholdco Limited | Administrative & support | 2014 |
| Prosign Creative Solutions Limited | Manufacturing | 2011 |
| Prosign Solutions Limited | Manufacturing | 2019 |
| Prosperity Eagle Relocations Limited | Households | 2023 |
| Prosperity Property Relocations Limited | Hospitality | 2022 |
| Prosser Holding Ltd | Financial services | 2025 |
| Provender Court (Altrincham) Management Company Limited | Households | 2003 |
| Proventus Solutions Limited | Information & communication | 2025 |
| Prowling Lions Limited | Wholesale & retail | 2015 |
| Przemek Kraus Ltd | Transport & logistics | 2010 |
| PS Digital Tenders Limited | Information & communication | 2014 |
| PS Estates Limited | Real estate | 2015 |
| Psixty Recruitment Limited | Administrative & support | 2015 |
| Psixty UK Ltd | Administrative & support | 2024 |
| PSL Automation Limited | Extraterritorial | 1996 |
| PSM Property Development Ltd | Construction | 2009 |
| PSM Sport and Media Ltd | Arts & recreation | 2014 |
| PSV Holdings Limited | Financial services | 2021 |
| Pukkahouse Limited | Real estate | 2002 |
| Pulham Services Limited | Manufacturing | 1989 |
| Pullman Green (Hexthorpe) Management Company Limited | Households | 2020 |
| Pumpkins Nanny Agency Limited | Administrative & support | 2019 |
| Punk Industries Capital Ltd | Professional & scientific | 2023 |
| Purdy Properties Ltd | Real estate | 2025 |
| Pure Construction Machinery Ltd | Manufacturing | 2021 |
| Pure Stream Arts & Culture Limited | Wholesale & retail | 2022 |
| Pure Stream Training Limited | Education | 2022 |
| Puro Scaffolding Limited | Construction | 2019 |
| Purple Panda PX Ltd | Professional & scientific | 2016 |
| PWR Lettings Ltd | Real estate | 2021 |