| Paul Michael Ltd | Wholesale & retail | 2011 |
| Pauldocdriver Limited | Other services | 2017 |
| Pauls Studio Ltd | Professional & scientific | 2002 |
| Pawpilot Transport Ltd | Agriculture & fishing | 2025 |
| Paymentslake Ltd | Information & communication | 2022 |
| Paynetworx Group Ltd | Professional & scientific | 2011 |
| Paynetworx Limited | Financial services | 2018 |
| Payze Plastering Ltd | Construction | 2018 |
| Pbfw Limited | Manufacturing | 2007 |
| Pease&Sons Ltd | Administrative & support | 2026 |
| Peking Chef Witham Ltd | Hospitality | 2024 |
| Penhaligon Dental Centre Limited | Health & social care | 2006 |
| Penn Installations Limited | Construction | 2014 |
| Pennant Property Solutions Ltd | Extraterritorial | 2011 |
| Pennypotts Witham Limited | Households | 2017 |
| Perceptive Planning Limited | Financial services | 2009 |
| Perfect Phone Ltd | Wholesale & retail | 2018 |
| Perfect Property Projects Ltd | Construction | 2026 |
| Perry Ellis Europe Limited | Wholesale & retail | 1970 |
| Perry Ellis Europe Retail Limited | Real estate | 2008 |
| Perth Internet Services Limited | Professional & scientific | 1995 |
| Peter Goodwin Limited | Construction | 2013 |
| PF Surveys Limited | Households | 2024 |
| PFE Express (Fulfilment) Limited | Transport & logistics | 2014 |
| PFE Express Holdings Limited | Financial services | 2017 |
| PFE Express Limited | Transport & logistics | 1983 |
| PFE Express Properties Limited | Administrative & support | 2017 |
| Phatpocket Limited | Wholesale & retail | 2003 |
| Phey Bidco Limited | Financial services | 2022 |
| Phey Holdco Limited | Financial services | 2022 |
| Philofacts Ltd | Information & communication | 2017 |
| Phoenix Boudoir Photography Ltd | Professional & scientific | 2024 |
| Phoenix Takeaway Foods Limited | Hospitality | 2016 |
| Pick Pack N Post Ltd | Transport & logistics | 2021 |
| Pickles Playhouse (Witham) Ltd | Arts & recreation | 2025 |
| Pickles Playhouse MD Limited | Arts & recreation | 2020 |
| Piggies Productions Limited | Information & communication | 2019 |
| Pillar Box Red Limited | Manufacturing | 2010 |
| Pinnacle Data Management Limited | Arts & recreation | 1994 |
| Pinnacle Security Limited | Financial services | 2022 |
| Pioneer Tools Ltd | Wholesale & retail | 2004 |
| Pizza Rubyno Ltd | Hospitality | 2025 |
| PK Security Consultancy Ltd | Administrative & support | 2023 |
| Pkrm Ltd | Information & communication | 2017 |
| Plan B Alternative Construction Ltd | Manufacturing | 2025 |
| Plate Craft UK Ltd | Wholesale & retail | 2025 |
| Player Owned Prints Ltd | Manufacturing | 2025 |
| Playle Couriers Limited | Transport & logistics | 2022 |
| Playle Engineering Company Ltd | Manufacturing | 1980 |
| Playle Group Limited | Administrative & support | 2019 |
| Playle Holdings Limited | Financial services | 2012 |
| Please Release ME Ltd | Information & communication | 2017 |
| Plumbsparesdirect Limited | Administrative & support | 2015 |
| PM Installations Limited | Construction | 2016 |
| Pmtg Holding Ltd | Financial services | 2018 |
| Polestar Business Systems Limited | Professional & scientific | 2018 |
| Polytech Contracts Limited | Construction | 2017 |
| Pomona Quarries Limited | Manufacturing | 2024 |
| Popstarcollectibles Ltd | Wholesale & retail | 2026 |
| Porter Patent Safety Seals Limited(The) | Manufacturing | 1913 |
| Portfolio Brands International UK Ltd | Financial services | 2018 |
| Portugal Removals Limited | Transport & logistics | 2012 |
| Positive Shooting Limited | Wholesale & retail | 2011 |
| Potencial Limited | Information & communication | 2017 |
| Pound Lane Custom Build Limited | Real estate | 2018 |
| Pound Lane Plots Management Company Limited | Real estate | 2024 |
| Power Padel UK Ltd | Construction | 2019 |
| Power Plays Entertainment Limited | Information & communication | 2023 |
| Power Security Limited | Wholesale & retail | 2017 |
| Powys Internet Services Limited | Professional & scientific | 1995 |
| Prayerhouse of Deliverance Ministries International | Other services | 2015 |
| Precious Metals Recovery Limited | Manufacturing | 2019 |
| Preheat UFH Limited | Construction | 2008 |
| Premier B2L Ltd | Real estate | 2013 |
| Premier Badges Limited | Wholesale & retail | 1957 |
| Premium and Classic Ltd | Wholesale & retail | 2022 |
| Premium Playing Cards Ltd | Wholesale & retail | 2024 |
| Pres Investments Ltd | Financial services | 2022 |
| Prestige Pet Care Ltd | Other services | 2025 |
| Preststar Limited | Arts & recreation | 2012 |
| Pretium Estates Ltd | Financial services | 2025 |
| Pretium Residential One Ltd | Real estate | 2025 |
| Prime Appointments Holdings Limited | Financial services | 2015 |
| Prime Appointments Limited | Administrative & support | 1992 |
| Prime Finds 2026 Ltd | Wholesale & retail | 2026 |
| Prime Leisure GB Limited | Administrative & support | 1998 |
| Primedwell Ltd | Real estate | 2024 |
| Primepath Consulting Limited | Professional & scientific | 2025 |
| Primeplay Limited | Wholesale & retail | 2026 |
| Primesportive Limited | Wholesale & retail | 2026 |
| Printed Glass Solutions Limited | Extraterritorial | 2015 |
| Priory Gate Residential Limited | Real estate | 2024 |
| Priory Tower Developments Limited | Construction | 2017 |
| Prism Cleanair Limited | Manufacturing | 2022 |
| Pristine Glazing Instalations Limited | Construction | 2023 |
| Privacy Plus Ltd | Wholesale & retail | 2018 |
| Pro Pelvis Ltd | Health & social care | 2016 |
| Product Fulfilment Ltd | Transport & logistics | 2024 |
| Production & Tooling Services (Essex) Limited | Manufacturing | 1984 |
| Professional Freight Solutions Limited | Transport & logistics | 2009 |