| Pineridge Productions Ltd | Other services | 2022 |
| Pines Management Company Limited (the) | Real estate | 1969 |
| Pinevale Plumbing &Heating Ltd | Construction | 2003 |
| Pinewood Trading Ltd | Construction | 2019 |
| Ping Pong Social Ltd | Information & communication | 2021 |
| Pink Crayon Ltd | Information & communication | 2019 |
| Pink Fitness Ltd | Arts & recreation | 2026 |
| Pink Fluff HR Consultancy Ltd | Professional & scientific | 2019 |
| Pinna Plumbing Ltd | Construction | 2025 |
| Pinnacle Growth Advisors Limited | Information & communication | 2025 |
| Pinnacle Landscaping and Groundworks Limited | Administrative & support | 2025 |
| Pinpoint Trackers Ltd | Wholesale & retail | 2024 |
| Pinson Investments Limited | Extraterritorial | 1970 |
| Pinwu Craft Ltd | Wholesale & retail | 2026 |
| Piotr Jaczewski Limited | Transport & logistics | 2025 |
| PIP Hero Ltd | Wholesale & retail | 2026 |
| Piping Hot (South Coast) Limited | Construction | 2007 |
| Piping Hot Plumbing & Heating Limited | Energy | 2002 |
| Pippin Building Products Limited | Wholesale & retail | 2002 |
| Piranha Motor Racing Limited | Arts & recreation | 2007 |
| Pironi Ltd | Professional & scientific | 2016 |
| Pirouette Consulting Ltd | Professional & scientific | 2008 |
| Pit-Stop Paintworx Ltd | Wholesale & retail | 2023 |
| Pitcher & Pitcher Ltd | Information & communication | 2016 |
| Pitcher Property Group Ltd | Real estate | 2023 |
| Pitwines Flat Management Company Limited | Households | 2008 |
| Pixel Bridge IT Ltd | Information & communication | 2025 |
| Pixel Mart Pro Ltd | Wholesale & retail | 2025 |
| Pixel Mods HQ Limited | Extraterritorial | 2021 |
| Pixel Smiths Limited | Information & communication | 2022 |
| Pixfonic Events Limited | Information & communication | 2018 |
| Pixi Talent Ltd | Information & communication | 2025 |
| Pixl Ltd | Wholesale & retail | 2025 |
| Pizza Factory Hub Ltd | Hospitality | 2023 |
| PJ Automotive Consultings Ltd | Wholesale & retail | 2025 |
| PJ Builders Ltd | Construction | 2024 |
| PJ Physio & Rehab Ltd | Health & social care | 2026 |
| PJB 397 Limited | Administrative & support | 2021 |
| PJD Apartments Ltd | Real estate | 2019 |
| PJD Lift Consultancy Ltd | Construction | 2025 |
| PJM Sales Limited | Administrative & support | 2008 |
| PJS Motors Ltd | Wholesale & retail | 2018 |
| PKP (Dorset) Limited | Financial services | 2024 |
| Place Farm House Residential Home Ltd | Health & social care | 2016 |
| Places to Go Ltd | Information & communication | 2000 |
| Placetalk Limited | Professional & scientific | 2017 |
| Pladius Limited | Information & communication | 2026 |
| Plaintext Security Ltd | Information & communication | 2025 |
| Plan B Safety Limited | Wholesale & retail | 2011 |
| Planbuild Construction Ltd | Construction | 2021 |
| Planbuild Developments Limited | Construction | 2020 |
| Plane Sailing Southern Ltd | Wholesale & retail | 2026 |
| Planet Tinting Ltd | Wholesale & retail | 2023 |
| Planet Valet Limited | Wholesale & retail | 2008 |
| Planning Strategy Ltd | Professional & scientific | 2025 |
| Plant Engineering Solutions Ltd | Professional & scientific | 2023 |
| Plant Powered Consulting Ltd | Professional & scientific | 2018 |
| Planting Works Ltd | Administrative & support | 2014 |
| Plastic Moulding Solutions Limited | Manufacturing | 2008 |
| Platehaus Ltd | Wholesale & retail | 2022 |
| Plating Centre Limited | Manufacturing | 2012 |
| Platinum Commercial Academy Ltd | Extraterritorial | 2024 |
| Platinum Design and Consultancy LLP | | 2011 |
| Platinum Design Consultancy Ltd | Professional & scientific | 2019 |
| Platinum HMO Academy Ltd | Education | 2020 |
| Platinum Holdings Limited | Professional & scientific | 2000 |
| Platinum Taxis Parkstone Ltd | Transport & logistics | 2022 |
| Platypus Education Limited | Information & communication | 2025 |
| Play Hosting Ltd | Information & communication | 2022 |
| Playful Magic Limited | Information & communication | 2024 |
| Playmchomes Ltd | Real estate | 2021 |
| PLC 1947 Ltd | Real estate | 2026 |
| PLH IT Services Ltd | Information & communication | 2021 |
| Pliancy Ventures Limited | Arts & recreation | 2026 |
| Pliskin & Co Limited | Real estate | 2022 |
| PLN Transport Services Limited | Transport & logistics | 2022 |
| Plng Industries Limited | Information & communication | 2024 |
| Plowmans Garden Nursery and Plant Centre Limited | Wholesale & retail | 1992 |
| PLQ Ventures Ltd | Wholesale & retail | 2025 |
| PLR Fairy Ltd | Wholesale & retail | 2026 |
| Plsk Ltd | Transport & logistics | 2023 |
| PLT Facilities Limited | Administrative & support | 2024 |
| Plumber Property Management Ltd | Households | 2023 |
| Plumbpod Ltd | Construction | 2022 |
| Plytol Ltd | Information & communication | 2023 |
| PM Stables Ltd | Real estate | 2020 |
| PM Trans Limited | Transport & logistics | 2025 |
| PMC Developers Ltd | Real estate | 2019 |
| PMD Electrics Ltd | Construction | 1998 |
| PMD Estates Limited | Real estate | 2016 |
| PMI in a Box Limited | Financial services | 2018 |
| PML Roofing and Construction Ltd | Construction | 2018 |
| PMO Academy Ltd | Information & communication | 2026 |
| PN Flooring Limited | Wholesale & retail | 2012 |
| PN Telecommunications Ltd | Information & communication | 2012 |
| PO Marine Ltd | Manufacturing | 2021 |
| Poca Audio Ltd | Manufacturing | 2021 |
| Pocket Angel CIC | Other services | 2020 |
| Pocket Waste Production Ltd | Wholesale & retail | 2026 |
| Pohuy Ltd | Manufacturing | 2019 |