| Pajc Investments Ltd | Professional & scientific | 2012 |
| Palmer Clark Limited | Financial services | 2009 |
| Parcel of Ltd | Extraterritorial | 2020 |
| Pareto Economics Ltd | Professional & scientific | 2019 |
| Park Farm Racing Limited | Arts & recreation | 2018 |
| Park House (Snitterfield) Ltd | Households | 2009 |
| Park Lane Public Relations Limited | Administrative & support | 2009 |
| Park Mill Developments Limited | Real estate | 2015 |
| Park Mill Estates Limited | Real estate | 2024 |
| Park Renovations Ltd | Construction | 2023 |
| Parkinsons Limited | Wholesale & retail | 1999 |
| Partalien Ltd | Manufacturing | 2025 |
| Pashley Group Ltd | Financial services | 2021 |
| PAT Mcdonald Consultancy Ltd | Professional & scientific | 2022 |
| Patash Management Limited | Professional & scientific | 2009 |
| Pathfinder Ashness Care Limited | Health & social care | 2002 |
| Pathfinder Ashness House Limited | Health & social care | 2021 |
| Pathfinder Group Healthcare Limited | Health & social care | 2019 |
| Pathfinder Group Limited | Health & social care | 2018 |
| Patriot Aerospace Limited | Financial services | 2010 |
| Patton Interests Limited | Real estate | 1971 |
| Paul Anderson Urology Ltd | Health & social care | 2009 |
| Paul Barker Consulting Ltd | Professional & scientific | 2026 |
| Paul Bennett Decorating & Building Maintenance Ltd | Construction | 2005 |
| Paul Carr Racing Limited | Manufacturing | 2002 |
| Paul Davey Concept Development Limited | Professional & scientific | 2013 |
| Paul Foster Creative Ltd | Hospitality | 2025 |
| Paul Jeavons Construction Limited | Construction | 2007 |
| Pavey Barnes Limited | Administrative & support | 2017 |
| Pavone Holdings Limited | Real estate | 2025 |
| Pawpdaw Ltd | Wholesale & retail | 2025 |
| Paye West Ltd | Administrative & support | 2019 |
| Payne Relief Change Management Ltd | Professional & scientific | 2025 |
| Pbaes Limited | Manufacturing | 2012 |
| Pbrown Management Limited | Professional & scientific | 2012 |
| PD Sharp Investments Limited | Real estate | 2021 |
| PDK (Holdings) Limited | Professional & scientific | 2015 |
| PDK Exhibitions Limited | Other services | 2007 |
| PE Shirley Limited | Financial services | 2007 |
| Peachy Consulting Limited | Administrative & support | 2025 |
| Peachy-Keen (Jelly Bean) Limited | Extraterritorial | 1989 |
| Peak Performance Solutions Ltd | Professional & scientific | 2024 |
| Pearson Nutrition Ltd | Health & social care | 2018 |
| Pelican 7 Ltd | Information & communication | 2014 |
| Penbriar Limited | Wholesale & retail | 2025 |
| Penjberry Limited | Construction | 2018 |
| People Development & Quality Ltd | Education | 1996 |
| Performe Physiotherapy & Pilates Limited | Professional & scientific | 2026 |
| Pet Health Ltd | Extraterritorial | 2014 |
| Peter Clarke & Co New Homes LLP | | 2014 |
| Peter Clarke Property Consultants LLP | | 2011 |
| Peter Colbourne Ltd | Other services | 2026 |
| Peter Mole Investments Limited | Real estate | 2019 |
| Peter Woolley Training Ltd | Education | 2014 |
| Petshopbowl Limited | Wholesale & retail | 2010 |
| Pettiphers Farm Management Company Limited | Households | 1993 |
| PG Mirzoeff Investments Ltd | Real estate | 2021 |
| PGC Consultancy Limited | Professional & scientific | 2022 |
| Pharmalogos Limited | Professional & scientific | 2012 |
| PHB Technology Ltd | Information & communication | 2017 |
| Philip Taylor House (Management) Limited | Real estate | 2004 |
| Phoenix Consulting (Marton) Ltd | Education | 2017 |
| Phoenix Events and Productions Limited | Information & communication | 2019 |
| Phoenix Properties & Rentals Ltd | Construction | 2025 |
| Phygital Media Limited | Professional & scientific | 2024 |
| Pick Thai Ltd | Hospitality | 2021 |
| Piltec Limited | Other services | 1995 |
| Pin-Up Property Developments Limited | Construction | 2022 |
| Pindex Pet Limited | Wholesale & retail | 2026 |
| Pineapple 88 Limited | Professional & scientific | 2014 |
| Pinfold Grange Management Company Ltd | Households | 2022 |
| Pink Grapefruit Catering Ltd | Extraterritorial | 2018 |
| Pinkjelly Consulting Limited | Information & communication | 2023 |
| Pinkjelly Marketing Limited | Information & communication | 2017 |
| Pinksage Flowers Ltd | Wholesale & retail | 2025 |
| Pioneer First Ltd | Transport & logistics | 2020 |
| Pipelined Logic Limited | Professional & scientific | 2026 |
| Pipetek Supplies Limited | Wholesale & retail | 2004 |
| Pitchall Barns Management Company Limited | Households | 2016 |
| Pixiefloss Ltd | Health & social care | 2015 |
| Pizzazz Properties Limited | Real estate | 2023 |
| PJ Management Limited | Professional & scientific | 2016 |
| PJG Building Conservation Limited | Construction | 2014 |
| PJS Reloved Furniture Ltd | Other services | 2023 |
| PK4D Limited | Professional & scientific | 2025 |
| Plai Ltd | Information & communication | 2022 |
| Plan B Design and Photography Limited | Professional & scientific | 2013 |
| PLAN2CHANGE Limited | Professional & scientific | 2007 |
| Plant Breeding International Limited | Agriculture & fishing | 2022 |
| Plant Innovations Ltd | Wholesale & retail | 2025 |
| Planting Ideas Ltd | Agriculture & fishing | 2016 |
| Plastix Ltd | Manufacturing | 2011 |
| Platform 4 Mediterranean Restaurant Limited | Hospitality | 2024 |
| Playfair Marketing Ltd | Professional & scientific | 2017 |
| PLW Partnership Limited | Professional & scientific | 2025 |
| Pmav Limited | Arts & recreation | 2016 |
| PMC Firefighter Training Ltd | Public administration | 2018 |
| PMD Leisure Limited | Professional & scientific | 2013 |
| PMD Magnetics Leisure Limited | Professional & scientific | 2010 |
| PNK Property Limited | Real estate | 2013 |