| Peter Wood and SON Organ Builders Limited | Manufacturing | 2021 |
| Peterborough Prison Management Holdings Limited | Financial services | 2002 |
| Peterborough Prison Management Limited | Administrative & support | 2002 |
| Peterhead Renewable Energy Limited | Energy | 2025 |
| Peterill Terrace Roadway Limited | Real estate | 2016 |
| Peterson Property Limited | Real estate | 2012 |
| Petite Suites Ltd | Hospitality | 2021 |
| Petr GSH Ltd | Transport & logistics | 2016 |
| Petra Properties Solutions Ltd | Hospitality | 2025 |
| Petra Schouten Ltd | Wholesale & retail | 2019 |
| Petra Trading Ltd | Information & communication | 2020 |
| Petre Constantin 1988 Ltd | Construction | 2018 |
| Petrens Ltd | Transport & logistics | 2019 |
| Petreviva Ltd | Wholesale & retail | 2026 |
| Petrichor Properties Leeds Limited | Real estate | 2025 |
| Petrichororg Ltd | Information & communication | 2023 |
| Petrie Property Partners Limited | Real estate | 2024 |
| Petromart Ltd | Wholesale & retail | 2024 |
| Petronel Iosif Gangal Limited | Transport & logistics | 2025 |
| Petronel Leahu Couriers Ltd | Transport & logistics | 2022 |
| Pets at Peace Cremation Services Ltd | Other services | 2024 |
| Petsi Global Ltd | Information & communication | 2020 |
| Pettersen Estates Ltd | Real estate | 2019 |
| Petti Artistry & Aesthetics Ltd | Health & social care | 2026 |
| Petunia Care Limited | Public administration | 2021 |
| Petvital Services Ltd | Other services | 2026 |
| Peycke Group Limited | Real estate | 2024 |
| PEZ Interiors Ltd | Construction | 2025 |
| PF Associates Ltd | Professional & scientific | 2010 |
| PF Housing Ltd | Real estate | 2026 |
| PF Pro Ltd. | Professional & scientific | 2015 |
| Pfch Limited | Real estate | 2020 |
| PFF Packaging (Sedgefield) Limited | Manufacturing | 1990 |
| PFI (Pacific) Limited | Administrative & support | 2014 |
| PFI 2005 Limited | Financial services | 2005 |
| PFI Custodial (Holdings) Limited | Financial services | 2012 |
| PFI Para (Holdings) Limited | Financial services | 2012 |
| PFL Events Limited | Other services | 2025 |
| PFM 2 Limited | Administrative & support | 2016 |
| Pfpd Limited | Financial services | 2011 |
| PFS Developments Limited | Real estate | 2023 |
| PFT Care Services Ltd | Health & social care | 2019 |
| PG & JE (Holdings) Limited | Professional & scientific | 2013 |
| PG & JE Limited | Financial services | 2013 |
| PG Consolidated Limited | Administrative & support | 2008 |
| PG Fashion Limited | Professional & scientific | 2021 |
| PG People Limited | Administrative & support | 2012 |
| PG Plant (Leeds) Ltd | Administrative & support | 2023 |
| PGC Golf Course Services Limited | Administrative & support | 2018 |
| PGC Logistics Management Limited | Transport & logistics | 2010 |
| Pgch Limited | Administrative & support | 2008 |
| PGD Business Solutions Limited | Administrative & support | 2010 |
| PGI Financial Limited | Financial services | 2011 |
| PGK Consulting Ltd | Professional & scientific | 2016 |
| PGL Events Limited | Administrative & support | 2016 |
| PH Delivry Service Limited | Wholesale & retail | 2025 |
| PH GEO Ltd | Professional & scientific | 2025 |
| PH LS8 Ltd Ltd | Hospitality | 2024 |
| PH Plumbing Contractors Ltd | Construction | 2012 |
| PH Printing Services Ltd | Manufacturing | 2025 |
| PH Staffing Ltd | Health & social care | 2018 |
| PH Staffing Plus+ Ltd | Health & social care | 2025 |
| PH Warrington Ltd | Hospitality | 2023 |
| PH Yorkshire Ltd | Hospitality | 2014 |
| PH16 Limited | Wholesale & retail | 2024 |
| PH17 Ltd | Administrative & support | 2017 |
| PHA MI Ltd | Arts & recreation | 2026 |
| Phade Legal Limited | Professional & scientific | 2024 |
| Phage Retail Ltd. | Wholesale & retail | 2018 |
| Phantom 1 Limited | Construction | 2020 |
| Pharaoh Capital Limited | Financial services | 2022 |
| Pharm - Assist Trading LLP | | 2015 |
| Pharm Support Network Ltd | Health & social care | 2023 |
| Pharm&Aesthetic Ltd | Health & social care | 2023 |
| Pharm-Assist (Healthcare) Limited | Wholesale & retail | 2004 |
| Pharm-Assist Capital Limited | Financial services | 2012 |
| Pharma Corner Limited | Professional & scientific | 2015 |
| Pharma E Ltd | Wholesale & retail | 2024 |
| Pharmacareuk Limited | Wholesale & retail | 2011 |
| Pharmacy Plus Health (Bidco) Limited | Wholesale & retail | 2025 |
| Pharmacy Plus Health Limited | Health & social care | 2022 |
| Pharmacy Today Ltd | Wholesale & retail | 2024 |
| PHARMACY2U Limited | Wholesale & retail | 1999 |
| Pharmaeng Solutions Ltd | Professional & scientific | 2024 |
| Pharmahealth Clinical Services Ltd | Health & social care | 2024 |
| Pharmall Limited | Wholesale & retail | 2003 |
| Pharmartist Ltd | Health & social care | 2012 |
| Pharmascope Ltd | Health & social care | 2019 |
| Pharmasee Ltd | Wholesale & retail | 2024 |
| Pharmatique Health Ltd | Wholesale & retail | 2025 |
| Pharmavision (UK) Nanosonic Technology Ltd | Information & communication | 2020 |
| Pharmcare Limited | Wholesale & retail | 2012 |
| Pharmco Ltd | Health & social care | 2018 |
| Pharmestates Limited | Real estate | 2018 |
| Pharmfirst UK Limited | Wholesale & retail | 2024 |
| Pharmhelp Ltd | Health & social care | 2022 |
| Pharmland Holdings Ltd | Financial services | 2026 |
| Pharmland Ltd | Wholesale & retail | 2007 |
| Pharmlife Ltd | Public administration | 2023 |
| Pharmoutservices Ltd | Professional & scientific | 2022 |