| Powergrid (Northern) Limited | Extraterritorial | 2011 |
| Powergrid (South East) Limited | Extraterritorial | 2011 |
| Powergrid (South Eastern) Limited | Extraterritorial | 2011 |
| Powergrid (South West) Limited | Extraterritorial | 2011 |
| Powergrid (South Western) Limited | Extraterritorial | 2011 |
| Powergrid (South) Limited | Extraterritorial | 2011 |
| Powergrid (Southern) Limited | Extraterritorial | 2011 |
| Powergrid (West) Limited | Extraterritorial | 2011 |
| Powergrid (Western) Limited | Extraterritorial | 2011 |
| Powergrid (Yorkshire) Limited | Extraterritorial | 2011 |
| Powerline Engineering Services Limited | Energy | 2018 |
| Powertec Utilities Ltd | Manufacturing | 2012 |
| PP Cleaning Solutions Ltd | Administrative & support | 2021 |
| PP Great Park Limited | Arts & recreation | 2026 |
| PPG Financial Services Ltd | Financial services | 2020 |
| PPP Home Services Ltd | Construction | 2025 |
| PR MAC Ltd | Information & communication | 2026 |
| PR Mode Limited | Wholesale & retail | 2017 |
| PR Process & Project Ltd | Other services | 2022 |
| PRA IC Limited | Financial services | 2023 |
| Practice in Management Limited | Professional & scientific | 2015 |
| Pranella Limited | Wholesale & retail | 2014 |
| Prasad Technologies Ltd | Information & communication | 2022 |
| Prattewart Ltd | Health & social care | 2019 |
| Praxis Service | Health & social care | 1988 |
| Praxpro Ltd | Professional & scientific | 2025 |
| PRC Investments (North East) Limited | Real estate | 2023 |
| Pre:Set Ltd | Manufacturing | 2025 |
| Precinct 97 Limited | Other services | 2017 |
| Precision Build Kitchens and Bathrooms Limited | Construction | 2026 |
| Precision Build Maintenance Limited | Construction | 2026 |
| Precision Build NE Limited | Construction | 2024 |
| Precision Immunotherapeutics Limited | Professional & scientific | 2018 |
| Precision Integrity Limited | Professional & scientific | 2025 |
| Precision Jetting Ltd | Administrative & support | 2026 |
| Precision Project and Design Management Ltd | Construction | 2025 |
| Precursor Technology Group Limited | Financial services | 2023 |
| Predictaa Ltd | Information & communication | 2026 |
| Prefab 77 Limited | Arts & recreation | 2011 |
| Preloved Imports Limited | Wholesale & retail | 2026 |
| Prem-Lets.Co.Uk Limited | Real estate | 2010 |
| Premier Academy Centre Ltd | Professional & scientific | 2016 |
| Premier BIN Wash Limited | Administrative & support | 2010 |
| Premier Brick Slips Ltd | Manufacturing | 2016 |
| Premier Car Care (North East) Limited | Wholesale & retail | 2016 |
| Premier Car Parts (MSR) Ltd | Wholesale & retail | 2024 |
| Premier Dawn Properties Limited | Professional & scientific | 1999 |
| Premier Dial a Drink Limited | Hospitality | 2016 |
| Premier Enterprise HK Limited | Real estate | 2026 |
| Premier Express NE Ltd | Wholesale & retail | 2026 |
| Premier Express Store 1 Ltd | Wholesale & retail | 2019 |
| Premier Eyecare (Castleford) Ltd | Wholesale & retail | 2021 |
| Premier Gardens Ltd | Administrative & support | 2022 |
| Premier Glass Renovation Limited | Construction | 2004 |
| Premier Site Coatings Limited | Construction | 2022 |
| Premier Technical IT Ltd | Information & communication | 2013 |
| Premier Tennis League (UK) Limited | Arts & recreation | 2006 |
| Premier Vehicle Care Limited | Wholesale & retail | 2005 |
| Premier Vehicle Holding Limited | Financial services | 2024 |
| Premier Vehicle Mechanical Ltd | Financial services | 2024 |
| Premium Bespoke - Menswear Ltd | Wholesale & retail | 2024 |
| Premium Cycle Workshop Ltd | Manufacturing | 2025 |
| Premium Educational Consulting Ltd | Information & communication | 2024 |
| Premium Service Centre (NE) Ltd | Education | 2023 |
| Premmed UK Limited | Other services | 2012 |
| Prentech Ltd | Construction | 2014 |
| Prepare Ltd. | Manufacturing | 2020 |
| Prepare to Land Ltd | Information & communication | 2018 |
| Prepress Digital Limited | Manufacturing | 1996 |
| Presko Executive Chauffeur Cars Ltd | Transport & logistics | 2023 |
| Pressed Steel Products Group Ltd | Financial services | 2019 |
| Pressed Steel Products Limited | Real estate | 1998 |
| Presteel Limited | Wholesale & retail | 1983 |
| Prestige (North East) Limited | Real estate | 2003 |
| Prestige Air Properties Ltd | Real estate | 2026 |
| Prestige Control Systems Limited | Manufacturing | 1995 |
| Prestige Digital Solutions Ltd | Administrative & support | 2020 |
| Prestige Exec Ltd | Transport & logistics | 2020 |
| Prestige Express Ltd | Real estate | 2019 |
| Prestige Hygiene Control International Limited | Other services | 2020 |
| Prestige Living Developments Ltd | Real estate | 2023 |
| Prestige Properties Newcastle Ltd | Construction | 2019 |
| Prestige Property Investments NE Ltd | Real estate | 2025 |
| Prestige Worldwide Corporate Limited | Professional & scientific | 2026 |
| Prestigious Enterprises Ltd | Hospitality | 2022 |
| Preston Coastal Investments Limited | Real estate | 2025 |
| Preston Farm Management Limited | Construction | 2006 |
| Prestwick Care Limited | Health & social care | 2009 |
| Prestwick Hall Consulting Ltd | Professional & scientific | 2015 |
| Prestwick Park Limited | Real estate | 2025 |
| Prestwick Whins Management Limited | Households | 2004 |
| Prettysphere Limited | Wholesale & retail | 2025 |
| Prhservices Ltd | Hospitality | 2025 |
| Pria Consulting Ltd | Professional & scientific | 2024 |
| Pribro International Limited | Information & communication | 1997 |
| Pricewatch Supermarkets Ltd | Wholesale & retail | 2007 |
| Pride Group Limited | Real estate | 2021 |
| Prima Nova Ltd | Hospitality | 2018 |
| Primal Fitness (NE) Limited | Arts & recreation | 2014 |
| Primal Property Company North East Ltd | Financial services | 2023 |