| Part Time Trading Limited | Other services | 2006 |
| Partsmart (UK) Ltd | Wholesale & retail | 2011 |
| Pascom Limited | Real estate | 2019 |
| Patterson Engineering Solutions Ltd | Professional & scientific | 2026 |
| Paul Dixon Engineering Ltd | Construction | 2019 |
| Paul Woods Finance Limited | Professional & scientific | 2014 |
| Paul's Twenty Second Ltd | Professional & scientific | 2021 |
| Pawelec-Romero Ltd | Other services | 2025 |
| Pawpack NE Ltd | Other services | 2022 |
| PB Investing Ltd | Real estate | 2018 |
| PB Visualisation Limited | Professional & scientific | 2010 |
| PC Investments Limited | Real estate | 1946 |
| PCK Consultants Limited | Information & communication | 2014 |
| PDC Brickwork Ltd | Construction | 2026 |
| PDS Chiropody Limited | Health & social care | 2011 |
| Peace Fast Food Ltd | Hospitality | 2015 |
| Peach Investments (Investco NO.3) Ltd | Real estate | 2019 |
| Pearson Machine Tool Company Limited | Professional & scientific | 2018 |
| Pearson Spares & Service Limited | Manufacturing | 1985 |
| Pelo Hair Ltd | Other services | 2021 |
| Pentland Plumbing & Heating Contractors Ltd | Construction | 2018 |
| People Pathways Ltd | Professional & scientific | 2026 |
| PEP Media Ltd | Arts & recreation | 2021 |
| Perezoso Entertainment Limited | Arts & recreation | 2024 |
| Perfect Look & Health Ltd | Wholesale & retail | 2008 |
| Perfect Message Ltd | Wholesale & retail | 2020 |
| Perfect Vascular Natural Limited | Wholesale & retail | 2014 |
| Perforo Ltd | Information & communication | 2024 |
| Persevere Sports Management Ltd | Arts & recreation | 2025 |
| Pet Fare Limited | Wholesale & retail | 2014 |
| Pete Wylie Salon Ltd | Other services | 2016 |
| Peters Property Holdings Limited | Real estate | 2022 |
| PG Lets Ltd | Construction | 2024 |
| Pharmanutra Ltd | Manufacturing | 2018 |
| Phil Smith Photography (Newcastle) Ltd | Other services | 2013 |
| Phil’S Plaice on the Quay Ltd | Wholesale & retail | 2018 |
| Photo Stuff Limited | Wholesale & retail | 2009 |
| Pilates at the Coast Ltd | Education | 2024 |
| Pilica Renovations Limited | Construction | 2026 |
| Pinnacle Technical Solutions Limited | Construction | 2017 |
| Pinwheel Ltd | Arts & recreation | 2019 |
| Pitmen Pictures Ltd | Information & communication | 2024 |
| Pixie Dust Cleaning Service Ltd | Administrative & support | 2020 |
| Pizza Cottage (Whitley Bay) Limited | Hospitality | 2016 |
| Pizzanaz Delaval Ltd | Hospitality | 2018 |
| PJC Lifting Operations & Rigging Services Ltd | Professional & scientific | 2018 |
| PJM Properties (WB) Ltd | Real estate | 2025 |
| PK Gosforth Ltd | Wholesale & retail | 2024 |
| Placeonearth Limited | Construction | 2012 |
| Plant Therapy Ltd | Health & social care | 2023 |
| Platform 2 (Tynemouth) Limited | Hospitality | 2018 |
| Platinum Inspection Ltd | Construction | 2026 |
| Player Pulse Ltd | Information & communication | 2025 |
| Plaza Pizza Whitley Bay Ltd | Hospitality | 2025 |
| PMC Social Care Consultancy Limited | Real estate | 2002 |
| PME Law Limited | Professional & scientific | 2024 |
| Ponteland Motor Works Limited | Wholesale & retail | 2025 |
| Power in the Pause Retreats Limited | Other services | 2026 |
| PR Prestige Funding Solutions Ltd | Professional & scientific | 2023 |
| PR2 Engineering & Design Limited | Administrative & support | 2014 |
| Pragmatic NE Ltd | Administrative & support | 2017 |
| PRB Surveys Limited | Professional & scientific | 2006 |
| Prcl(Ne) Ltd | Financial services | 2025 |
| Precision ERP Consulting Ltd. | Information & communication | 2024 |
| Premier Properties North East Limited | Construction | 2014 |
| Pretty Amazing Ltd | Professional & scientific | 2016 |
| Pretty Amazing Property Limited | Real estate | 2018 |
| PRF Electrics Limited | Construction | 2012 |
| Pride Health & Fitness Limited | Arts & recreation | 2000 |
| Prima Domos Limited | Real estate | 2022 |
| Primate Productions Ltd | Other services | 2007 |
| Prime Properties NE Ltd | Real estate | 2021 |
| Primrose Career Solutions Ltd | Administrative & support | 2019 |
| Printing Ecosse Limited | Manufacturing | 2022 |
| Priory Electrical (NE) Limited | Construction | 2016 |
| Priory Property Developments NE Ltd | Households | 2019 |
| Priory Windows and Conservatories Limited | Construction | 2004 |
| Prjkt Ltd | Information & communication | 2025 |
| Procaddie Limited | Extraterritorial | 2010 |
| Professional Stove Installations Ltd | Construction | 2019 |
| Project Refrigeration Limited | Construction | 2004 |
| Prompt FIX (NE) Limited | Other services | 2026 |
| Proper Badger Ltd | Arts & recreation | 2026 |
| Properties by ANT Ltd | Real estate | 2025 |
| Property Newcastle Ltd | Manufacturing | 2024 |
| Prospect Properties (NE) Ltd | Real estate | 2021 |
| Prosperity Properties Limited | Real estate | 2011 |
| Proud to POP Limited | Manufacturing | 2011 |
| Provider (Investments) Limited | Real estate | 2008 |
| PSI Geotechnics Ltd | Construction | 2004 |
| Public Static Void Ltd | Information & communication | 2018 |
| Publicprofiler Ltd | Information & communication | 2020 |
| Pullwood Properties Ltd | Real estate | 2024 |
| Pureknead Limited | Wholesale & retail | 2020 |
| Purple Performing Arts Ltd | Arts & recreation | 2025 |
| Purpose Made Ltd | Extraterritorial | 2021 |
| Purpose Rendering Ltd | Construction | 2025 |
| Pwmmor Limited | Financial services | 2016 |
| Pyeroy Construction Limited | Construction | 2020 |
| Qetech Ltd | Information & communication | 2013 |