| Podium Automations Ltd | Construction | 2026 |
| Podium Creative Limited | Professional & scientific | 2012 |
| Poenskop Limited | Health & social care | 2006 |
| Point Brickwork Ltd | Construction | 2012 |
| Point Forty Two Limited | Real estate | 2021 |
| Pokestarter TCG Ltd | Extraterritorial | 2024 |
| Polaris Handcrafted Ltd | Manufacturing | 2023 |
| Polestar Studios Limited | Information & communication | 2010 |
| Polished UP Ltd | Administrative & support | 2021 |
| Politics Without Borders Limited | Other services | 2020 |
| Polly-Ox Limited | Health & social care | 2023 |
| Pollydash Ltd | Financial services | 2025 |
| Polo-Market Polish Shop Ltd | Wholesale & retail | 2015 |
| Polsar Imagery Limited | Professional & scientific | 2018 |
| Polunin Editorial Ltd | Manufacturing | 2004 |
| Polybox Solutions Ltd | Information & communication | 2022 |
| Polyplant Games Limited | Information & communication | 2025 |
| Pomegranate Holdings Ltd | Real estate | 2025 |
| Pomelo Promotions Ltd | Administrative & support | 2021 |
| Pompette VIN Limited | Wholesale & retail | 2025 |
| Ponderlily Ltd. | Manufacturing | 2017 |
| Pons Aelius Developments Limited | Real estate | 2025 |
| Pons Aelius Limited | Hospitality | 2006 |
| Ponteland 888 Limited | Hospitality | 2017 |
| Ponteland Academy Trust | Education | 2016 |
| Ponteland Asset Management Limited | Real estate | 2025 |
| Ponteland Asset Management SPV 1 Limited | Wholesale & retail | 2021 |
| Ponteland Childcare Limited | Education | 2013 |
| Ponteland Footcare Ltd | Public administration | 2018 |
| Ponteland Golf Club Limited(The) | Arts & recreation | 1927 |
| Ponteland Healthcare Limited | Health & social care | 2012 |
| Ponteland Plumbing & Heating Ltd | Construction | 2018 |
| Ponteland Services Limited | Real estate | 2021 |
| Ponteland Tandoori Restaurant Ltd | Hospitality | 2012 |
| Ponteland Travel CLS Ltd | Administrative & support | 2024 |
| Ponteland Travel Ltd | Administrative & support | 2023 |
| Ponteland Travel Services Ltd | Administrative & support | 2025 |
| Ponteland United Juniors Football Club Limited | Arts & recreation | 2019 |
| Pontiq Limited | Information & communication | 2016 |
| Ponton Road LLP | | 2014 |
| Ponts Investment Limited | Financial services | 2023 |
| Pool Foot Ltd | Construction | 2019 |
| POP Art Limited | Professional & scientific | 1999 |
| Popadams Limited | Hospitality | 2026 |
| Poplar Property Solutions Ltd | Real estate | 2025 |
| Poplo Holdings Ltd | Wholesale & retail | 2020 |
| Popular Care Ltd | Health & social care | 2006 |
| Porrelli Holdings Ltd | Wholesale & retail | 2026 |
| Port Living Limited | Hospitality | 2019 |
| Portal Services Consulting Limited | Construction | 2014 |
| Portelet Care Holdings Limited | Financial services | 2024 |
| Porterhouse Newcastle Limited | Hospitality | 2015 |
| Porters NB Limited | Hospitality | 2024 |
| Portfolio North (Newcastle) Limited | Information & communication | 2022 |
| Portland House Holdings Limited | Construction | 1989 |
| Portland Mews Freehold Limited | Real estate | 2014 |
| Portland Mews Management Limited | Real estate | 1987 |
| Portland Properties (Newcastle) Limited | Real estate | 1961 |
| Portland Real Estate Group Limited | Real estate | 2019 |
| Portland Residential Limited | Real estate | 2021 |
| Portland Residential Management Limited | Real estate | 2024 |
| Portland Terrace Electrical Limited | Financial services | 2018 |
| Porto Creative LLP | | 2018 |
| Portrait Ltd | Professional & scientific | 2025 |
| POS 2 Retail Limited | Administrative & support | 2022 |
| POS Retail 3 Limited | Administrative & support | 2021 |
| Poseidon Plumbing and Heating Services Ltd | Construction | 2021 |
| Posh Frocks at Tuppence Limited | Wholesale & retail | 2022 |
| Posh Walker Ltd | Wholesale & retail | 2025 |
| Poshwalk Ltd | Wholesale & retail | 2024 |
| Positano Group Limited | Construction | 2025 |
| Positive Investments (NE) Ltd | Real estate | 2024 |
| Positive Mindset Ltd | Health & social care | 2022 |
| Post & Place (UK) Ltd | Information & communication | 2014 |
| Post & Place Ltd | Administrative & support | 2014 |
| Post NOW Ltd | Wholesale & retail | 2019 |
| Potenza NE Ltd | Real estate | 2016 |
| Potpoker Limited | Construction | 2018 |
| Potraviny Shop Limited | Wholesale & retail | 2020 |
| Pottery Bank Community Centre Ltd | Other services | 2012 |
| Pottery Bank Court Management Limited | Households | 1995 |
| Pour Decisions Newcastle Ltd | Wholesale & retail | 2024 |
| Pour Happiness Ltd | Hospitality | 2023 |
| Pouzad Interpreting Ltd | Professional & scientific | 2026 |
| Powell Healthcare Ltd | Health & social care | 2024 |
| Power Cleaned Limited | Administrative & support | 2010 |
| Power Engineering Dynamics Limited | Professional & scientific | 2015 |
| Power Project Advisors Ltd | Other services | 2013 |
| POWER2 Utility Networks Limited | Construction | 2022 |
| Poweredbyrec. Limited | Arts & recreation | 2019 |
| Powerful Futures NE Limited | Construction | 2024 |
| Powergrid (Central) Limited | Extraterritorial | 2011 |
| Powergrid (East) Limited | Extraterritorial | 2011 |
| Powergrid (Eastern) Limited | Extraterritorial | 2011 |
| Powergrid (Midlands) Limited | Extraterritorial | 2011 |
| Powergrid (North East) Limited | Extraterritorial | 2011 |
| Powergrid (North Eastern) Limited | Extraterritorial | 2011 |
| Powergrid (North West) Limited | Extraterritorial | 2011 |
| Powergrid (North Western) Limited | Extraterritorial | 2011 |
| Powergrid (North) Limited | Extraterritorial | 2011 |