| Panmario (Bordesley Green) Limited | Hospitality | 2008 |
| Panmario (Earlsdon) Limited | Hospitality | 2024 |
| Panmario (Ross on WYE) Limited | Hospitality | 2024 |
| Panmario (Shirley) Limited | Hospitality | 2022 |
| Panmario (West Midlands) Ltd | Hospitality | 2025 |
| Panmario Eats Limited | Hospitality | 2020 |
| Panmario Limited | Real estate | 2021 |
| Panther Nuit Ltd | Other services | 2021 |
| Pantri Ltd | Information & communication | 2026 |
| Papa Plans Ltd | Real estate | 2011 |
| Papaya POK POK Ltd | Wholesale & retail | 2020 |
| Paper & Print Limited | Manufacturing | 1986 |
| Paper Mill Farm Limited | Information & communication | 2002 |
| Papi's Pizza Limited | Hospitality | 2019 |
| Papia Limited | Financial services | 2024 |
| Papo UK Limited | Wholesale & retail | 2009 |
| Paprika Catering Ltd | Hospitality | 2026 |
| Papul Limited | Real estate | 2022 |
| Parabolic Ventures Limited | Financial services | 2020 |
| Parachute Contractor Services Ltd | Information & communication | 2005 |
| Paragon Asset Finance Limited | Financial services | 1987 |
| Paragon Bank PLC | Financial services | 2005 |
| Paragon Banking Group PLC | Financial services | 1989 |
| Paragon Business Finance PLC | Financial services | 1980 |
| Paragon Car Finance (1) Limited | Financial services | 1996 |
| Paragon Car Finance Limited | Financial services | 2005 |
| Paragon Commercial Finance Limited | Financial services | 2009 |
| Paragon Covered Bonds Finance Limited | Financial services | 2024 |
| Paragon Covered Bonds LLP | | 2024 |
| Paragon Development Finance Limited | Professional & scientific | 2000 |
| Paragon Development Finance Services Limited | Financial services | 2012 |
| Paragon Enterprise Limited | Construction | 2009 |
| Paragon Fifth Funding Limited | Financial services | 2012 |
| Paragon Finance PLC | Financial services | 1985 |
| Paragon Mortgages (2010) Limited | Financial services | 2008 |
| Paragon Mortgages (NO. 12) PLC | Financial services | 2005 |
| Paragon Mortgages (NO. 5) PLC | Financial services | 1999 |
| Paragon Mortgages (NO.25) Holdings Limited | Financial services | 2015 |
| Paragon Mortgages (NO.25) PLC | Financial services | 2015 |
| Paragon Mortgages (NO.26) Holdings Limited | Financial services | 2018 |
| Paragon Mortgages (NO.27) Holdings Limited | Financial services | 2020 |
| Paragon Mortgages (NO.27) PLC | Financial services | 2020 |
| Paragon Mortgages (NO.28) Holdings Limited | Financial services | 2020 |
| Paragon Mortgages (NO.28) PLC | Financial services | 2020 |
| Paragon Mortgages (NO.29) Holdings Limited | Financial services | 2023 |
| Paragon Mortgages (NO.29) PLC | Financial services | 2023 |
| Paragon Mortgages Limited | Financial services | 1989 |
| Paragon Options PLC | Professional & scientific | 1991 |
| Paragon Pension Plan Trustees Limited | Financial services | 2011 |
| Paragon Personal Finance (1) Limited | Financial services | 1997 |
| Paragon Personal Finance Limited | Financial services | 2005 |
| Paragon Real Estate Solutions Ltd | Real estate | 2018 |
| Paragon Seventh Funding Limited | Financial services | 2015 |
| Paragon Sixth Funding Limited | Financial services | 2013 |
| Paragon Technology Finance Limited | Financial services | 1982 |
| Paramedical Ltd | Health & social care | 2022 |
| Paramount Housing Limited | Real estate | 2025 |
| Parasay Limited | Professional & scientific | 2016 |
| Pardees Limited | Professional & scientific | 2024 |
| Pareesa Ltd | Wholesale & retail | 2025 |
| Parent School Partnership Ltd | Education | 2020 |
| Parga Limited | Financial services | 2021 |
| Parish Court (Leamington Spa) Management Company Limited | Households | 2004 |
| Parity Projects Limited | Information & communication | 2005 |
| Park Avenue (Sunbury) Management Company Limited | Extraterritorial | 2014 |
| Park Hall (2000) Limited | Households | 2000 |
| Park Smart Ltd | Transport & logistics | 2024 |
| Park Town Green Limited | Professional & scientific | 2024 |
| Parker Logistics Limited | Information & communication | 1999 |
| Parkgate Trading Limited | Manufacturing | 2023 |
| Parkhill Vets Limited | Professional & scientific | 2017 |
| Parking Source Limited | Transport & logistics | 2017 |
| Parkinson Estates PLC | Construction | 1990 |
| Parklands (Harborne) Management Company Limited | Households | 1982 |
| Parklea Limited | Construction | 2003 |
| Parklea Projects Limited | Construction | 2008 |
| Parkside Motor Bodies Limited | Wholesale & retail | 1983 |
| Parkwalk Properties Limited | Real estate | 1998 |
| Parkway Ground Maintenance Limited | Administrative & support | 2000 |
| Parkway Health Ltd | Health & social care | 2022 |
| Parkyy Ltd | Professional & scientific | 2025 |
| Parmar Acquisitions Ltd | Health & social care | 2010 |
| Parmar Capital Ltd | Wholesale & retail | 2018 |
| Parmar Psychological Services Ltd | Professional & scientific | 2025 |
| Parmar Psychology Group Ltd | Financial services | 2025 |
| Parmer Property Limited | Real estate | 2019 |
| Parnell Digital Ltd | Wholesale & retail | 2025 |
| Parr Investments Ltd | Real estate | 2025 |
| Parsons Chain Residents Management Company Limited | Households | 2022 |
| Parthian Ventures Limited | Real estate | 1999 |
| Partnering NOT Parenting Ltd | Education | 2023 |
| Partners in Motion Limited | Professional & scientific | 2025 |
| Partners in Property Ltd | Education | 2019 |
| Partners Together Trust | Administrative & support | 2002 |
| Partnership Matters Limited | Health & social care | 2019 |
| Partridge Property Services Limited | Real estate | 2015 |
| Party Events 2 Go Ltd | Administrative & support | 2024 |
| Pass Technologies Limited | Information & communication | 2014 |
| Pass Track Driving School Ltd | Education | 2024 |
| Pathogen Solutions (UK) Ltd | Wholesale & retail | 2008 |