| Power Networks North East Ltd | Construction | 2020 |
| Power of Women C.I.C. | Education | 2021 |
| Power OUT Electrical Ltd | Construction | 2024 |
| Power Service Solutions Engineering Ltd | Professional & scientific | 2025 |
| Power Service Solutions Ltd | Manufacturing | 2017 |
| POWER2CONSULT Ltd | Information & communication | 2020 |
| PP Rail Services Ltd | Professional & scientific | 2016 |
| PR Building Solutions Ltd | Construction | 2026 |
| PR Electrical Contractor Limited | Construction | 2019 |
| PR Human Resources Limited | Administrative & support | 2016 |
| Practical Boat Services Ltd | Administrative & support | 2019 |
| Practiceview Ltd | Information & communication | 2025 |
| Prakruti Limited | Real estate | 2013 |
| Prakruti Projects Ltd | Real estate | 2026 |
| PRB Consulting Services Ltd | Health & social care | 2019 |
| Precious Paws Ingleby Ltd | Agriculture & fishing | 2024 |
| Precise Personal Training Ltd | Other services | 2022 |
| Precision Cleaning (Northern) Limited | Administrative & support | 2012 |
| Precision Structural Services Ltd | Professional & scientific | 2018 |
| Precision Windows & Doors NE Ltd | Construction | 2025 |
| Prefer Homes Limited | Hospitality | 2005 |
| Prefrontal Properties Limited | Real estate | 2026 |
| Premier Approved Motors Ltd | Wholesale & retail | 2026 |
| Premier Hygiene Services Ltd | Administrative & support | 2025 |
| Premier League Boxing Ltd | Arts & recreation | 2025 |
| Premier League Trading Ltd | Financial services | 2025 |
| Premier Removals Ltd | Transport & logistics | 2020 |
| Premier Roadmarkings Limited | Water & waste | 2012 |
| Premier Tyres & MOT Stockton Limited | Wholesale & retail | 2021 |
| Premium Associates Limited | Administrative & support | 2017 |
| Premlux Ltd | Health & social care | 2018 |
| Press & FAB (North East) Limited | Extraterritorial | 2009 |
| Pressure Cleaning Teesside Ltd | Administrative & support | 2017 |
| Prestige (FIR Tree) Ltd | Construction | 2016 |
| Prestige Automotive Detailing North East Ltd | Administrative & support | 2021 |
| Prestige Care (HM) Limited | Health & social care | 2015 |
| Prestige Care (Riverdale) Ltd | Health & social care | 2025 |
| Prestige Care Group Holdings Ltd | Professional & scientific | 2017 |
| Prestige Care Limited | Health & social care | 1995 |
| Prestige Dent Removal Ltd | Wholesale & retail | 2025 |
| Prestige Investment Property Limited | Real estate | 2023 |
| Prestige Motor Services Limited | Wholesale & retail | 2007 |
| Prestige Partners Ltd | Wholesale & retail | 2026 |
| Prestige Properties (North East) Limited | Real estate | 2006 |
| Prestige Styling Teesside Ltd | Professional & scientific | 2025 |
| Prestige Worktops Limited | Construction | 2011 |
| Preston Farm Body & Paint Limited | Wholesale & retail | 2006 |
| Preston Farm Cafe Diner Limited | Hospitality | 2013 |
| Preston Farm Developments & Consultancy Limited | Construction | 2016 |
| Preston Farm Motor Co. Limited | Wholesale & retail | 2004 |
| Preston Ramsey Cars Limited | Wholesale & retail | 2026 |
| Pretty Obsessed Ltd | Wholesale & retail | 2018 |
| Prevail Inspection Ltd | Other services | 2014 |
| Priaanj Limited | Real estate | 2024 |
| Prieuree Electrique Limited | Mining & quarrying | 2016 |
| Prime Carpets and Furniture Ltd | Wholesale & retail | 2019 |
| Prime Edge Logistics Ltd | Transport & logistics | 2025 |
| Prime FIX & Removals Ltd | Transport & logistics | 2025 |
| Prime Group Solutions Ltd | Construction | 2026 |
| Prime Group Windows & Doors Ltd | Construction | 2026 |
| Prime Lane Motors Ltd | Wholesale & retail | 2026 |
| Primecare Workforce Limited | Health & social care | 2025 |
| Prince Regent Street Trust | Education | 2018 |
| Principal Project & Management (NE) Limited | Professional & scientific | 2018 |
| Prinel International Limited | Information & communication | 2024 |
| Prism Global Limited | Financial services | 2021 |
| Prismatic Wealth Limited | Financial services | 2012 |
| Prismatical Limited | Professional & scientific | 2012 |
| Pristine Medical Academy Ltd | Education | 2023 |
| Priswm Limited | Financial services | 1987 |
| Priya Gold Reality Limited | Real estate | 2025 |
| Pro Care Medical Ltd | Health & social care | 2025 |
| Pro Hot Tubs Limited | Administrative & support | 2019 |
| Pro Move Automotive Limited | Transport & logistics | 2024 |
| Pro Resume CV Ltd | Professional & scientific | 2025 |
| Pro Tech Games Ltd | Wholesale & retail | 2021 |
| Pro-Flex Packaging Europe Ltd | Manufacturing | 2007 |
| Pro-Freight (UK) Limited | Wholesale & retail | 2023 |
| Pro-Tech Vehicle Repair Specialist Limited | Wholesale & retail | 2021 |
| Probo Consultancy Ltd | Professional & scientific | 2018 |
| Proclaim Legal Services Ltd | Professional & scientific | 2011 |
| Procomm Site Services (Holdings) Limited | Professional & scientific | 2010 |
| Procomm Site Services Limited | Administrative & support | 2002 |
| Prodigyai Ltd | Education | 2023 |
| Proexcelsport Ltd | Arts & recreation | 2022 |
| Professional Electrical Services Ltd | Administrative & support | 2017 |
| Professional Salon Products Limited | Wholesale & retail | 2018 |
| Proflex Packaging Co Ltd | Manufacturing | 2009 |
| Profound Grace Ltd | Transport & logistics | 2024 |
| Profound Grace Properties Ltd | Real estate | 2024 |
| Prohealth Associates Ltd | Information & communication | 2006 |
| Project Box Consulting Limited | Administrative & support | 2011 |
| Project Property Sourcing Ltd | Real estate | 2024 |
| Project Property Trading Ltd | Real estate | 2024 |
| Projema Services Ltd | Professional & scientific | 2021 |
| Promat Estates Ltd | Wholesale & retail | 2023 |
| Prop-Pie Limited | Real estate | 2025 |
| Propcycle Ltd | Extraterritorial | 2012 |
| Properties Under the Hammer Auction Ltd | Wholesale & retail | 2013 |
| Propertiesheikh Ltd | Real estate | 2025 |