| P E & J Limited | Construction | 2015 |
| P E B Limited | Wholesale & retail | 1999 |
| P F Veterinary Services Ltd | Professional & scientific | 2009 |
| P Griffiths Property Limited | Real estate | 2024 |
| P M Joinery & Maintenance Limited | Construction | 2014 |
| P M Media Productions Limited | Information & communication | 2006 |
| P Martin Consultants Limited | Professional & scientific | 2024 |
| P V Property Rental Ltd | Real estate | 2025 |
| P W Bespoke Joinery Limited | Construction | 2021 |
| P.E. Blake & SON (Holdings) Limited | Transport & logistics | 1999 |
| P.E. Blake & SON Limited | Transport & logistics | 1995 |
| P.H. & M.A. Brookes Engineering Limited | Manufacturing | 1978 |
| P.R.W. Product Services Limited | Professional & scientific | 2005 |
| P.S.G. Trading Limited | Financial services | 2005 |
| PA & H Brown Ltd | Financial services | 2018 |
| PAA Limited | Wholesale & retail | 2023 |
| Pace Cakes Limited | Hospitality | 2018 |
| Pacefare Limited | Hospitality | 1986 |
| Pacific Shelf 1854 Limited | Financial services | 2018 |
| Packbridge Ltd | Wholesale & retail | 2026 |
| Pact Teccom Eparts UK Distribution Limited | Information & communication | 2024 |
| Palm Beauty Studio Ltd | Other services | 2024 |
| PAM PAM (London) Limited | Wholesale & retail | 2022 |
| Panda Bear Properties Ltd | Real estate | 2017 |
| Pantry 11 Ltd | Hospitality | 2025 |
| PAO Cares Limited | Health & social care | 2015 |
| Paradox Cafe Ltd | Hospitality | 2023 |
| Paramount Roofing Solutions Ltd | Construction | 2026 |
| Park Lane (Hartford) Management Co Limited | Real estate | 2008 |
| Park View (Northwich) Ltd | Financial services | 2019 |
| Park With Ease Ltd | Manufacturing | 2012 |
| Parker & Manners Ltd | Information & communication | 2018 |
| Parker Design Consultants Limited | Information & communication | 2001 |
| Parker Design Group (UK) Limited | Professional & scientific | 2014 |
| Parkgate Nurseries Limited | Agriculture & fishing | 1977 |
| Parme Farm Limited | Agriculture & fishing | 1998 |
| Parr Arms (Grappenhall) Ltd | Hospitality | 2026 |
| Pasha Barbers Club Ltd | Other services | 2020 |
| Pass Drive Limited | Education | 2009 |
| Pasture Farm Dutton Ltd | Agriculture & fishing | 2026 |
| Pattrade Limited | Financial services | 2018 |
| Paul & Co Construction Ltd | Construction | 2021 |
| Paul Caine Consulting Ltd | Information & communication | 2019 |
| Paul Connor Health and Fitness Limited | Arts & recreation | 2019 |
| Paul Davies GAS Services Ltd | Construction | 2023 |
| Paul Morrison Transport Limited | Transport & logistics | 2019 |
| Pawsky Ltd. | Transport & logistics | 2015 |
| PC Aviation Services Ltd | Transport & logistics | 2026 |
| PD Dental Care Limited | Health & social care | 2010 |
| Peach Homes Ltd | Real estate | 2024 |
| Peak Athletic Performance Ltd | Arts & recreation | 2020 |
| Peakrow Limited | Real estate | 2016 |
| Pearson Lettings UK Limited | Real estate | 2017 |
| Peartree Recruitment Solutions Limited | Professional & scientific | 2015 |
| Peconia Ltd | Information & communication | 2025 |
| Pedley Property Company Ltd | Real estate | 2020 |
| Peleus Capital Ltd | Professional & scientific | 2022 |
| Pemberton Business Park Limited | Real estate | 2021 |
| Pemberton-Smith Bess Ltd | Real estate | 2025 |
| Pendulum Marketing Ltd | Administrative & support | 2016 |
| Penguin Supplies Limited | Extraterritorial | 2006 |
| Percipient Limited | Information & communication | 2003 |
| Percy's Auto's Limited | Wholesale & retail | 2008 |
| Peregrine Lighting Design Limited | Other services | 2018 |
| Performance Properties Ltd | Real estate | 2014 |
| Perry Nicholls Limited | Information & communication | 1994 |
| Perspectives CBT Ltd | Administrative & support | 2012 |
| Peruzzi Group Ltd | Administrative & support | 2018 |
| Pet Training Courses Ltd | Professional & scientific | 2021 |
| Petanda Design Limited | Professional & scientific | 2021 |
| Petanni Limited | Professional & scientific | 2016 |
| Pete Owen Design Ltd | Professional & scientific | 2018 |
| Peter Harding & Co Construction Ltd | Construction | 2018 |
| Peter Harding & Co Holdings Ltd | Construction | 2015 |
| Peter Morgan Contractors Ltd | Construction | 2024 |
| Peter Street Partnership Limited | Financial services | 2025 |
| Petrie Contracting Limited | Professional & scientific | 2013 |
| Petrusoft Ltd | Information & communication | 2024 |
| Petty Pool | Education | 2016 |
| Petty Pool Construction Limited | Construction | 2020 |
| Petty Pool Groundworks Limited | Administrative & support | 2020 |
| Pevensey Consulting Ltd | Administrative & support | 2019 |
| PF and Co Services Limited | Construction | 2018 |
| PFP EOT Limited | Financial services | 2023 |
| Pharmalogic Ltd | Administrative & support | 2005 |
| Pharmamex Limited | Professional & scientific | 2025 |
| Phaster Limited | Administrative & support | 1994 |
| Phatfella Limited | Construction | 2021 |
| Phelps & Co Ltd | Professional & scientific | 2013 |
| Philip Jones Farrier Limited | Wholesale & retail | 2012 |
| Phillip J Jones Financial Planning Ltd | Financial services | 2017 |
| Phillips Professional Services Limited | Professional & scientific | 2023 |
| Phoenix Bar and PUB Company Ltd | Hospitality | 2019 |
| Phoenix Medcomms Ltd | Professional & scientific | 2025 |
| Phropines Holdings Ltd | Professional & scientific | 1999 |
| Pickandmix.Com Ltd | Wholesale & retail | 2025 |
| Pickering Joinery Limited | Construction | 2014 |
| Pickmere Plant Hire Limited | Construction | 2021 |
| Pickwick Automotive Ltd | Information & communication | 2022 |
| Picton Hall Development Company Limited | Construction | 2021 |