| Phandal Properties Limited | Real estate | 2022 |
| Phandal Securities Limited | Professional & scientific | 2003 |
| Phantom Performance Ltd | Wholesale & retail | 2026 |
| Phayao Limited | Professional & scientific | 2024 |
| Phdrift Ltd | Education | 2021 |
| Phdrift Taxi Ltd | Education | 2025 |
| Phelan Haulage Ltd | Transport & logistics | 2016 |
| Phil Sutton Vehicle Technician Limited | Wholesale & retail | 2016 |
| Philip Hodgson & Co Ltd | Professional & scientific | 2019 |
| Phoenix Developments N/E Ltd | Construction | 2025 |
| Phoenix Lazarus Group Ltd | Professional & scientific | 2019 |
| Phoenix Property Investors Ltd | Real estate | 2024 |
| Phone and Vapes NE Ltd | Wholesale & retail | 2025 |
| Photography Hub Club Ltd | Administrative & support | 2025 |
| PHS Commercial Ltd | Construction | 2024 |
| PHS Solutions Limited | Extraterritorial | 2025 |
| PHYTO42 Ltd. | Wholesale & retail | 2018 |
| Piasecki Residential Lettings Limited | Hospitality | 2012 |
| Picture Farm Studios Ltd | Professional & scientific | 2015 |
| Pier Property Partners Ltd | Real estate | 2025 |
| Pilates by Physiotherapy Ltd | Health & social care | 2024 |
| Pimlico Brockbushes Limited | Construction | 2025 |
| Pimlico Homes 2 Ltd | Construction | 2024 |
| Pimlico Homes Ltd | Construction | 2021 |
| Pink Palette Universe Ltd | Wholesale & retail | 2026 |
| Pink Pencil Limited | Real estate | 2024 |
| Pinpin Consulting Ltd | Health & social care | 2024 |
| Pipeline Safety Ltd | Professional & scientific | 2019 |
| Pipewise Solutions Ltd | Energy | 2026 |
| Pipewise Utilities Limited | Energy | 2021 |
| Pirnmill Access Solutions Ltd | Administrative & support | 2024 |
| PIT Wheel Holdings Ltd | Hospitality | 2026 |
| Pittilla Bell (Holdings) Limited | Professional & scientific | 2022 |
| Pittilla Bell Consulting Limited | Professional & scientific | 2011 |
| Pixel Innovation Ltd | Manufacturing | 2024 |
| Pixyl GC Ltd | Other services | 2022 |
| Pizza Base Durham Ltd | Hospitality | 2024 |
| Pizza Bella Restaurant Ltd | Hospitality | 2026 |
| Pizza Gate Limited | Hospitality | 2023 |
| Pizza House Durham Limited | Hospitality | 2025 |
| Pizza King Ltd | Hospitality | 2024 |
| Pizza Time (Shotton Village) Ltd | Hospitality | 2025 |
| Pizza Times 2 Ltd | Hospitality | 2023 |
| Pizza UNO 24 Ltd | Hospitality | 2024 |
| PIZZA&CO24 Ltd | Hospitality | 2024 |
| Pizzaco Durham Ltd | Hospitality | 2021 |
| PJI Engineering Limited | Professional & scientific | 2009 |
| Pjja Holdings Limited | Financial services | 2025 |
| Pknk Services Ltd | Construction | 2022 |
| Places 4 U CIC | Hospitality | 2024 |
| Planet Citizens Limited | Hospitality | 2014 |
| Plants People NE Ltd | Wholesale & retail | 2024 |
| Platform Deli Ltd | Hospitality | 2024 |
| Plrs Investments Ltd | Hospitality | 2022 |
| Plussoft Ltd | Wholesale & retail | 2024 |
| PMA Phil Marshall Abrahams Ltd | Education | 2016 |
| Pmam Transport Ltd | Other services | 2017 |
| PMB Mechanical Limited | Construction | 2025 |
| Pmlt Medical Ltd | Health & social care | 2020 |
| PMO Dynamics Ltd | Professional & scientific | 2023 |
| PMP (Partnership) Ltd | Real estate | 2010 |
| Podcastrevision Ltd | Education | 2009 |
| Podiatric Surgery Ltd | Health & social care | 2018 |
| Poke LAB Store Limited | Wholesale & retail | 2025 |
| Polar One North Limited | Information & communication | 2025 |
| Polaris Pathway Consultancy Limited | Professional & scientific | 2026 |
| Poleguns Aerial Hoop Ltd | Arts & recreation | 2026 |
| Polished Lounge Ltd | Other services | 2025 |
| Polished Property Ltd | Real estate | 2026 |
| Pollard Letting Limited | Real estate | 2017 |
| Polypeptides UK Limited | Wholesale & retail | 2026 |
| Pomell Utilities Ltd | Construction | 2026 |
| Pomfret Properties Limited | Real estate | 2025 |
| Pompous Boutique Apartments Limited | Real estate | 2022 |
| Poniel Energy SPV Limited | Real estate | 2023 |
| POP Shop Ltd | Wholesale & retail | 2026 |
| Poplar Tree & Landscapes Ltd | Administrative & support | 2025 |
| Poppies Durham Ltd | Administrative & support | 2017 |
| Poppy Construction (NE) Ltd | Construction | 2016 |
| Populace Properties Limited | Real estate | 2011 |
| Porcelain Coffee Ltd | Hospitality | 2025 |
| Port Homes (Seaton Meadows) Ltd | Construction | 2019 |
| Port Homes Limited | Construction | 2017 |
| Port Homes Social Limited | Construction | 2023 |
| Port Homes Wolviston Limited | Construction | 2021 |
| Port Homes Wynyard Limited | Construction | 2021 |
| Port Ventures Ltd | Other services | 2011 |
| Porter & Walker Ltd | Wholesale & retail | 2015 |
| Portfolio 106 Limited | Real estate | 2024 |
| Portland Estates Jesmond Limited | Real estate | 2016 |
| Portland Investments (AM) Limited | Financial services | 2010 |
| Portland Investments (OHA) Ltd | Construction | 2018 |
| Portobella Boutique Ltd | Wholesale & retail | 2021 |
| POS Activity Ltd | Professional & scientific | 2020 |
| Poseidon P&H Ltd | Construction | 2025 |
| Posh Wholesale Ltd | Wholesale & retail | 2022 |
| Positive Directions N.E. CIC | Hospitality | 2016 |
| Positive Lettings & Management Ltd | Real estate | 2012 |
| Positive Shift Emergency Services Ltd | Arts & recreation | 2025 |
| Potto Food Ltd | Wholesale & retail | 2024 |