| Peridot Property Limited | Real estate | 2021 |
| Period Property Restoration Limited | Construction | 2017 |
| Perk UP Ltd | Information & communication | 2024 |
| Permission to BE Human Ltd Ltd | Wholesale & retail | 2025 |
| Perpetual Accountancy Limited | Professional & scientific | 2021 |
| Perrie Drive Residents Management Company Ltd | Households | 2022 |
| Perry and Co Property Investment Limited | Real estate | 2022 |
| Perryfields (Bromsgrove) Ltd | Construction | 2021 |
| Personal Abundance Ltd | Education | 2025 |
| Personal Cloud Ltd | Information & communication | 2009 |
| Personal Training Qualifications Ltd | Education | 2011 |
| Perussi Limited | Wholesale & retail | 2013 |
| Pestakill Limited | Other services | 2008 |
| Peter Alexander Upholstered Furniture Limited | Administrative & support | 2003 |
| Peter France Agencies Limited | Wholesale & retail | 2003 |
| Peter Hibbitt Test Consulting Ltd | Professional & scientific | 2026 |
| Peter Jarvis London Limited | Wholesale & retail | 2021 |
| Peter Lord Forestry Limited | Administrative & support | 2009 |
| Peter M Collins Consultancy Ltd | Information & communication | 2022 |
| Peter Roberts (Consultancy) Limited | Construction | 1998 |
| Peter's Health Products Ltd | Wholesale & retail | 2011 |
| Pets Laid to Rest Ltd | Other services | 2019 |
| PFS Flooring Ltd | Construction | 2018 |
| PG Accountants Limited | Professional & scientific | 2020 |
| PG Consultancy (Solihull) Limited | Professional & scientific | 2018 |
| PG1STOP Limited | Other services | 2017 |
| PGI Solutions Limited | Transport & logistics | 2019 |
| PGS GAS & Heating Solutions Limited | Construction | 2021 |
| Pgthree Limited | Professional & scientific | 2012 |
| Pgthree Properties Ltd | Real estate | 2018 |
| PH 812 Limited | Financial services | 2015 |
| PH Capital Limited | Financial services | 2022 |
| Phan's Investments Limited | Other services | 2024 |
| Pharma Enterprises Ltd | Health & social care | 2024 |
| Pharmalead Limited | Health & social care | 2012 |
| Phase Nutrition Ltd | Other services | 2023 |
| Phdsmart Homes Ltd | Real estate | 2026 |
| Phenix Contracting Ltd | Construction | 2015 |
| Pheran Limited | Health & social care | 2019 |
| Phiause Ltd | Professional & scientific | 2023 |
| Phil Altimas Consultancy Ltd | Other services | 2021 |
| Phil Carter Consulting Limited | Professional & scientific | 2016 |
| Philip Brown Writer Ltd | Information & communication | 2017 |
| Phillips Associates Consulting Ltd | Financial services | 2015 |
| Philps Consulting Limited | Information & communication | 2014 |
| Phoebus Financial Software Limited | Information & communication | 2000 |
| Phoebus Holdings Limited | Information & communication | 2007 |
| Phoebus Software Limited | Information & communication | 1989 |
| Phoenix BB Limited | Other services | 2018 |
| Phoenix Design Company Limited | Other services | 1994 |
| Phoenix Family Services Ltd | Manufacturing | 2014 |
| Phoenix Global AI Limited | Information & communication | 2024 |
| Phoenix Medica Ltd | Education | 2020 |
| Phoenix Medicare Ltd | Education | 2022 |
| Phoenix Services (Oxford) Ltd | Construction | 2026 |
| Phoenix Sloane Consultants Limited | Information & communication | 2020 |
| Phoenix Staffordshire Ltd | Wholesale & retail | 2021 |
| Phoenix Transportation and Ecommerce Ltd | Wholesale & retail | 2022 |
| Phoenix UK Consultancy Ltd | Information & communication | 2014 |
| Phosri Jones Enterprises Ltd | Professional & scientific | 2025 |
| Photo Zone Ltd | Manufacturing | 2013 |
| Photon Planning Ltd | Professional & scientific | 2025 |
| Physical Activity and Leisure Management Academy Limited | Education | 2011 |
| Physical Wellness Estate Limited | Real estate | 2022 |
| Physio & Health Matters Limited | Health & social care | 2005 |
| Physiopoint Limited | Health & social care | 2018 |
| Physiotherapy & Rehabilitation Clinic Limited | Health & social care | 2009 |
| PI Catering Ltd | Hospitality | 2019 |
| PI Investments Limited | Real estate | 2012 |
| Piccadilly & Down Ltd | Professional & scientific | 2016 |
| Picton Jones and Co. (Property Consultants) Limited | Real estate | 1991 |
| Pierpont Rose Investments Limited | Real estate | 1968 |
| Pike Opticians Limited | Wholesale & retail | 2004 |
| Pillaton Garden Centre Limited | Wholesale & retail | 2019 |
| Pilot Burners Ltd | Professional & scientific | 2024 |
| Pilotis Design Limited | Professional & scientific | 2019 |
| Pine Coppice Management Company Limited | Real estate | 2006 |
| Pinecare Ltd | Health & social care | 2022 |
| Pinewood Court (Marston Green) Management Limited | Real estate | 2002 |
| Pinewood Playing Fields Limited | Hospitality | 2011 |
| Pink Blob Ltd | Professional & scientific | 2025 |
| Pink Field Land Management Limited | Real estate | 2021 |
| Pink House Holdings Ltd | Financial services | 2025 |
| Pink Onyx Group Ltd | Hospitality | 2025 |
| Pinnacle Catering Ltd | Hospitality | 2025 |
| Pinnacle CRM Systems Limited | Extraterritorial | 2019 |
| Pinnacle HR Solutions Limited | Administrative & support | 2025 |
| Pinnacle Print and Packaging Limited | Administrative & support | 2000 |
| Pipe Supports Overseas Limited | Professional & scientific | 2008 |
| Pipeforce Utilities Ltd | Other services | 2014 |
| Pipeline Welding Limited | Other services | 2017 |
| Piper Homes (Crowle) Ltd | Construction | 2018 |
| Pipsilver Limited | Extraterritorial | 1998 |
| Pistonvault Ltd | Administrative & support | 2025 |
| Pitch Different Limited | Wholesale & retail | 2023 |
| Pitstop Panini's Limited | Wholesale & retail | 2011 |
| Pivotalsoft IT Consulting Ltd | Information & communication | 2026 |
| Pizza FTD. Limited | Arts & recreation | 1997 |
| Pizza Land Selly Oak Limited | Hospitality | 2024 |
| Pizza Town (London) Limited | Hospitality | 2016 |