| Pentcourt Limited | Construction | 2010 |
| Penz-Ai Limited | Information & communication | 2019 |
| Perceptive Building Solutions Ltd | Construction | 2019 |
| Perfection Smart Repair Limited | Wholesale & retail | 2017 |
| Performance Platforms Limited | Professional & scientific | 2020 |
| Perryer Pilates Ltd | Arts & recreation | 2025 |
| Pery Pery Spicy Chicken Ltd | Hospitality | 2026 |
| Pest - Go Limited | Other services | 2002 |
| Peter Mayne Consulting Ltd | Administrative & support | 2016 |
| Peter Pedonomou Photography Limited | Professional & scientific | 2009 |
| Petrochem International Trading & Services (UK) Limited | Wholesale & retail | 2021 |
| Petros Studio Limited | Information & communication | 2016 |
| Pevc Ltd | Administrative & support | 2022 |
| Phamee Care Ltd | Health & social care | 2024 |
| Philly Photography Ltd. | Other services | 2017 |
| Phoenix Court (Hertford) Management Company Limited | Households | 2003 |
| Picone Limited | Agriculture & fishing | 2013 |
| Piers of the North Limited | Professional & scientific | 2024 |
| Pilly Limited | Real estate | 2023 |
| Pimlico Roofing and Building Ltd | Health & social care | 2025 |
| Pinar Demir Psychotherapist Limited | Health & social care | 2026 |
| Pinar Therapy Ltd | Health & social care | 2022 |
| Pinewood Property Development London Ltd | Real estate | 2012 |
| Pini Investments Limited | Real estate | 2022 |
| Pink Star Lettings and Property Management Limited | Real estate | 2025 |
| Pinkcloud Construction Limited | Construction | 2026 |
| Pinkcloud Management Limited | Real estate | 2024 |
| Pinkcloud Properties Ltd | Real estate | 2014 |
| Pinnacle Global Business Ltd | Information & communication | 2020 |
| Pinnacle Logistics and Storage Solutions Limited | Transport & logistics | 2011 |
| Pinnacle Peak Productions Limited | Information & communication | 2017 |
| Pipertiling.Com Limited | Construction | 2009 |
| Pirin Developments (BS) Limited | Construction | 2016 |
| Pirin Developments (Greenyard) Limited | Construction | 2015 |
| Pirin Holdings Limited | Real estate | 1991 |
| Pirin Ltd | Real estate | 1972 |
| Pitbull Group Limited | Transport & logistics | 2017 |
| Pitstopprints Limited | Wholesale & retail | 2024 |
| Pittas Foods Limited | Manufacturing | 1982 |
| Pittas Investments Ltd | Real estate | 2020 |
| Pittas Limited | Real estate | 1994 |
| Pixel Business Centre Management LLP | | 2018 |
| Pixel Business Centres Ltd | Real estate | 2016 |
| Pixel Colour Imaging Limited | Administrative & support | 1998 |
| Pixel Passion Limited | Information & communication | 2017 |
| Pizza Crazy Wisbech Ltd | Hospitality | 2023 |
| Pizza TUP Ltd | Hospitality | 2022 |
| Pizzaria Limited | Hospitality | 2018 |
| PK Investments (London) Limited | Financial services | 2012 |
| PK Nine Elms Ltd | Real estate | 2025 |
| PK22 Holdings Ltd | Financial services | 2025 |
| PK22 Maidstone Road Ltd | Real estate | 2025 |
| PK22 Tower Bridge Road Limited | Real estate | 2025 |
| PL Cleans Ltd | Administrative & support | 2024 |
| Planet Construction Company Limited | Construction | 1991 |
| Plas Y Maes Ltd | Hospitality | 2024 |
| Platform for Design Ltd | Construction | 2026 |
| Platinum Plumbing Heating Ltd | Construction | 2022 |
| Platinum Tree Ltd | Real estate | 2026 |
| PLD Projects Ltd | Construction | 2026 |
| Plus One Digital Limited | Information & communication | 2021 |
| Plus One Hospitality Services Ltd | Hospitality | 2025 |
| PNL Finishers Limited | Manufacturing | 2011 |
| Pogo Properties Limited | Real estate | 2024 |
| Point Global Ltd | Administrative & support | 2020 |
| Point Property Services Ltd | Households | 2019 |
| Polar Rising Limited | Arts & recreation | 2014 |
| Polegate Kebab House Ltd | Hospitality | 2023 |
| Pollen Creative Limited | Professional & scientific | 2018 |
| Ponte Diferro Limited | Hospitality | 2025 |
| Pooch Patrol Limited | Other services | 2023 |
| Poochieannas Luxury Ltd | Manufacturing | 2021 |
| Portlands Building and Maintenance Group Ltd | Construction | 2016 |
| Portlands Lofts Limited | Construction | 2019 |
| POS Renovations & Developments Ltd | Construction | 2014 |
| POS Rental Account LLP | | 2026 |
| Positive Power Solar Solutions Limited | Construction | 2026 |
| Positive Power Solutions Ltd | Construction | 2017 |
| Potato Property Ltd | Extraterritorial | 2022 |
| Power Investment Trading Ltd | Other services | 2016 |
| Powerboxfitness CIC | Education | 2024 |
| Powis House (Stevenage) Management Company Limited | Households | 2021 |
| PPT Properties Management Ltd | Construction | 2022 |
| Prayers Ltd | Health & social care | 2023 |
| Precise Carpets and Flooring Ltd | Construction | 2026 |
| Precision Auto Works Limited | Wholesale & retail | 2025 |
| Precision Automotive Ltd | Wholesale & retail | 2026 |
| Preco. E. C. Foods Limited | Wholesale & retail | 2006 |
| Premier Faze Limited | Other services | 2017 |
| Premier Stainless Ltd. | Wholesale & retail | 2003 |
| PREMIER23 Care Services Limited | Health & social care | 2023 |
| Premiere Video Productions Ltd | Information & communication | 2001 |
| Premium Contractors Ltd | Construction | 2022 |
| Premium Rail Limited | Construction | 2017 |
| Prepeco Two Ltd | Information & communication | 2023 |
| Prestige Cars Agent Group Limited | Wholesale & retail | 2021 |
| Prestige LUX Autos Ltd | Wholesale & retail | 2022 |
| Prestige Outdoor Projects Group Ltd | Administrative & support | 2026 |
| Prestige Worldwide Online Retail Ltd | Wholesale & retail | 2024 |
| Prettifyuk Limited | Wholesale & retail | 2020 |