| PG Auto Parts Group Limited | Wholesale & retail | 2023 |
| PG Parquet Group Ltd | Construction | 2022 |
| PGL Export Services Ltd | Transport & logistics | 2016 |
| PGR Enterprises Ltd | Financial services | 2010 |
| PGR Recovery Ltd | Wholesale & retail | 2025 |
| PGR Timber Limited | Wholesale & retail | 1984 |
| PH Admin Ltd | Public administration | 2019 |
| Pharez Health Limited | Health & social care | 2014 |
| Pharma Management Service Ltd | Professional & scientific | 2024 |
| Pharmanovia Bidco Limited | Financial services | 2019 |
| Pharmanovia Holdco Limited | Financial services | 2019 |
| Pharmanovia Midco Limited | Financial services | 2019 |
| Phase Craft Electrical Limited | Construction | 2025 |
| Phase Electrical and Maintenance Ltd | Construction | 2014 |
| Phatt Toad Coffee Ltd | Hospitality | 2024 |
| Philip Meadowcroft Architects Limited | Professional & scientific | 2013 |
| Phillip Ball Ltd | Professional & scientific | 2025 |
| Phillip Shaun Aviation Limited | Other services | 2022 |
| Phillip Shaun Construction Ltd | Construction | 2019 |
| Phillip Shaun FM Limited | Construction | 2024 |
| Phoenix Capital Global Ltd | Wholesale & retail | 2024 |
| Phoenix Eco Power Ltd | Construction | 2024 |
| Phoenix Funding Partners Limited | Financial services | 2023 |
| Phoenix Gray REC Limited | Administrative & support | 2023 |
| Phoenix Leasing Ltd | Administrative & support | 2021 |
| Phoenix Operations Limited | Financial services | 2024 |
| Phoenix Product Development Limited | Manufacturing | 1998 |
| Phoenix Simracing Ltd | Arts & recreation | 2023 |
| Phone Memories Ltd | Wholesale & retail | 2023 |
| Photofusion Technologies Limited | Professional & scientific | 2012 |
| Photographic Assignments Limited | Professional & scientific | 2002 |
| PIA Stone Homeware Ltd | Manufacturing | 2022 |
| PIA Stone Ltd | Manufacturing | 2021 |
| Picolo Coffee Ltd | Hospitality | 2026 |
| Picture Vehicles Limited | Other services | 2020 |
| Picture YOU Ltd | Professional & scientific | 2013 |
| Picturesque Workshop Limited | Manufacturing | 2019 |
| Pidgeon Developments Ltd | Manufacturing | 2025 |
| Piers & Johnson Ltd | Construction | 2024 |
| Pihl Legal Limited | Professional & scientific | 2022 |
| Pikwell Ltd | Administrative & support | 2013 |
| Pile Craft Foundation Engineers Limited | Construction | 2016 |
| Pilgrim Construction Limited | Construction | 2013 |
| Pinaka Holdings Ltd | Health & social care | 2023 |
| Pindrop Real Estate Ltd | Real estate | 2020 |
| Pinehill Shop and Cafe Ltd | Hospitality | 2023 |
| Pink Chilliz Basildon Ltd | Hospitality | 2021 |
| Pink Fish Services Ltd | Manufacturing | 2025 |
| Pink Kiwi Snacks Ltd | Wholesale & retail | 2023 |
| Pink Media Agncy Ltd | Professional & scientific | 2023 |
| Pinnacle Crafts Limited | Wholesale & retail | 2009 |
| Pinnacle Stone & Ceramics Ltd | Construction | 2007 |
| Pinnacle Traffic Management Limited | Construction | 2023 |
| Pinpoint Finance & Compliance Ltd | Professional & scientific | 2026 |
| Pioneer Building & Maintenance Ltd | Construction | 2024 |
| Pioneering Recruitment Ltd | Administrative & support | 2019 |
| PIP EOT Limited | Administrative & support | 2018 |
| Pipe FAB Ltd | Administrative & support | 2007 |
| Pipe Welding Limited | Construction | 2020 |
| Pipedream Fabrications Limited | Manufacturing | 2025 |
| Pipeline Leisure Limited | Other services | 2017 |
| Piperbodhi Ltd | Wholesale & retail | 2023 |
| Piperight Engineering Limited | Professional & scientific | 2015 |
| Pipework Systems Limited | Construction | 2025 |
| Pist Ltd | Transport & logistics | 2018 |
| Pitsea Electrical Services Limited | Construction | 2018 |
| Pitsea Spice Ltd | Hospitality | 2022 |
| Pivot Security Solutions Ltd | Administrative & support | 2020 |
| Pixelated Orange Ltd | Professional & scientific | 2020 |
| Pixie MAI Limited | Wholesale & retail | 2024 |
| PJ Glenrothes Limited | Hospitality | 2017 |
| PJ Goodacre Consultants Limited | Professional & scientific | 2014 |
| PJ Kirkaldy Limited | Hospitality | 2017 |
| PJG Studios Limited | Professional & scientific | 2016 |
| PJK Consultancy Ltd | Administrative & support | 2015 |
| PJS Carpentry Ltd | Administrative & support | 2016 |
| PJT Restaurants Limited | Hospitality | 2002 |
| Pkmt Properties Ltd | Other services | 2025 |
| PKS South East (Scaffolding) Ltd | Construction | 2009 |
| PL Management Group Limited | Professional & scientific | 2022 |
| Planet Alchemy Limited | Extraterritorial | 2019 |
| Planet Roofing Limited | Manufacturing | 2000 |
| Plant MAX Limited | Administrative & support | 2015 |
| Plantrex Ltd | Construction | 2018 |
| Platinum Building and Maintenance Limited | Construction | 2020 |
| Platinum Coach Services Limited | Transport & logistics | 2019 |
| Platinum Coach Tours Limited | Transport & logistics | 2020 |
| Platinum Funding Corporation Limited | Administrative & support | 2004 |
| Platinum Paving & Landscaping Limited | Administrative & support | 2026 |
| Platinum Quality Recruitment Solutions Limited | Administrative & support | 2022 |
| Platinum Servicing Limited | Manufacturing | 2023 |
| Platinum Staffing Solutions Ltd | Health & social care | 2021 |
| Platinum Starlight Healthcare Ltd | Health & social care | 2019 |
| Platok Properties Ltd | Real estate | 2024 |
| Play in the Present Limited | Professional & scientific | 2026 |
| Playmobil (U.K.) Limited | Wholesale & retail | 1980 |
| Pleasance & Sons Limited | Administrative & support | 2020 |
| Pleasantglow UK Limited | Other services | 2020 |
| Plough and Oxen Limited | Wholesale & retail | 2025 |
| PLP Bathrooms Ltd | Construction | 2023 |