| Primary Care Recruitment Ltd | Administrative & support | 2007 |
| Primary Inspiration Through Enterprise (PIE) Project Trust Limited | Education | 2016 |
| Primary Locums (NE) Limited | Administrative & support | 2003 |
| Prime & Co Mart Ltd | Wholesale & retail | 2025 |
| Prime 2026 Ltd | Construction | 2026 |
| Prime Auto Refinishing Limited | Wholesale & retail | 2015 |
| Prime Build Construction NE Ltd | Construction | 2025 |
| Prime Business & Asset Management Limited | Financial services | 2018 |
| Prime Chinese Food Ltd | Hospitality | 2024 |
| Prime Groundworks and Civils Ltd | Construction | 2021 |
| Prime HC Limited | Health & social care | 2022 |
| Prime Heating and GAS Services Ltd | Construction | 2021 |
| Prime Heating Solution Limited | Construction | 2026 |
| Prime Locum Services Ltd | Professional & scientific | 2023 |
| Prime Power Services Limited | Administrative & support | 2026 |
| Prime Presence Limited | Information & communication | 2025 |
| Prime Property Associates Ltd | Real estate | 2023 |
| Prime Property Associates Sales Limited | Real estate | 2024 |
| Prime Roofing & Property Services Ltd | Construction | 2025 |
| Prime Scaffolding (NE) Ltd | Construction | 2024 |
| Prime Security Gate Automation Limited | Construction | 2003 |
| Prime Syrups Ltd | Wholesale & retail | 2023 |
| Primeerp Solutions Ltd | Administrative & support | 2025 |
| Primetex Global Ltd | Wholesale & retail | 2025 |
| Primo Pizza Newcastle Limited | Hospitality | 2018 |
| Primrose Care SOL Ltd | Health & social care | 2026 |
| Primrose Court Care Limited | Health & social care | 2015 |
| Primrose Eco Ltd | Wholesale & retail | 2025 |
| Primrose Group Ltd | Wholesale & retail | 2023 |
| Primrose Investco Holdings Limited | Financial services | 2019 |
| Prince Bishops Homes Limited | Administrative & support | 2008 |
| Prince's Court (North Shields) Management Limited | Real estate | 2005 |
| Principle Controls Limited | Professional & scientific | 2017 |
| Pringle Properties Limited | Other services | 2020 |
| Pringle Property Developments Ltd | Real estate | 2025 |
| Pringle UK Estates Limited | Real estate | 2020 |
| Pringles Self Storage Limited | Other services | 2022 |
| Print & Mail Runner Ltd | Manufacturing | 2014 |
| Print - Making a Mark Limited | Extraterritorial | 2012 |
| Print Depot Ltd | Manufacturing | 2025 |
| Print My MAN Limited | Wholesale & retail | 2025 |
| Print North East Limited | Manufacturing | 2005 |
| Printcare Academy CIC | Manufacturing | 2025 |
| Prior Planning Limited | Hospitality | 2016 |
| Priors Haven (North Shields) Management Company Limited | Real estate | 2002 |
| Priory 1 Ltd | Hospitality | 2026 |
| Priory Auto Services Ltd | Wholesale & retail | 2026 |
| Priory Auto Solutions Ltd | Wholesale & retail | 2026 |
| Priory Court (Jarrow) Management Company Limited | Real estate | 2005 |
| Priory Court (Tynemouth) Management Company Limited | Households | 1973 |
| Priory Gate Newcastle (Management) Limited | Real estate | 2013 |
| Prioryco Limited | Wholesale & retail | 2024 |
| Prisansolutions Ltd | Information & communication | 2025 |
| Prism Care (North East) CIC | Health & social care | 2020 |
| Prism Family Law Limited | Professional & scientific | 2016 |
| Pristine Property Inspections Ltd | Other services | 2021 |
| Pristine Sight Limited | Health & social care | 2024 |
| Pritchard Occupational Medical Services Ltd | Health & social care | 2014 |
| Pritis Newcastle Limited | Wholesale & retail | 2013 |
| Private Business Solutions Investment Limited | Professional & scientific | 2016 |
| Private Journeys of Ltd | Administrative & support | 2026 |
| Privatedialuk Limited | Wholesale & retail | 2025 |
| Priya Enterprises Ltd | Wholesale & retail | 2009 |
| Priya Real Estate Ltd | Real estate | 2023 |
| Pro 19 UK Ltd | Wholesale & retail | 2020 |
| Pro Boxing Newcastle and Gateshead Ltd | Arts & recreation | 2018 |
| Pro Construction N E Ltd | Construction | 2021 |
| Pro Health Physiotherapy Ltd | Health & social care | 2020 |
| Pro Investment Properties Ltd | Real estate | 2024 |
| Pro Mobile & Tablets Plus Ltd | Wholesale & retail | 2020 |
| Pro Paintex Ltd | Manufacturing | 2023 |
| Pro Tone Decorating Ltd | Construction | 2024 |
| Pro Tone Group Ltd | Construction | 2024 |
| Pro Trumps Ltd | Wholesale & retail | 2015 |
| Pro-Apartments NCL Ltd | Real estate | 2022 |
| Pro-Spark Electrical Contractors NE Ltd | Construction | 2024 |
| Pro-Spec Landscaping Ltd | Construction | 2020 |
| PRO4 | Financial services | 2022 |
| Proace Plus Ltd. | Public administration | 2025 |
| Proagent Ltd | Wholesale & retail | 2025 |
| Problem Solved Pest Control Limited | Administrative & support | 2012 |
| Probuild (N E) Limited | Construction | 2026 |
| Process Systems Limited | Professional & scientific | 1982 |
| Proconstruct Intelligence Ltd | Information & communication | 2024 |
| Procresco Limited | Hospitality | 2015 |
| Procter & Gamble UK Pension Trustee Limited | Financial services | 2023 |
| Procter Logistics Ltd | Transport & logistics | 2024 |
| Procters Coaches (North Yorkshire NO3) Limited | Financial services | 2014 |
| Procters Coaches (North Yorkshire) Limited | Transport & logistics | 2000 |
| Procters Property Services Ltd | Construction | 2026 |
| Prodcompany Services Ltd | Information & communication | 2017 |
| Product Agency Limited | Professional & scientific | 2019 |
| Product Global Ltd | Real estate | 2017 |
| Professional Co Living Ltd | Real estate | 2024 |
| Professional Health Diagnostics Ltd | Health & social care | 2025 |
| Professional Kinetic Health Diagnostics Ltd | Health & social care | 2019 |
| Professional Rent Solutions UK Ltd | Real estate | 2019 |
| Professional Support Limited | Professional & scientific | 2025 |
| Professional Wealth Management (Yorkshire) Limited | Financial services | 2011 |
| Professional Wealth Management Investment Services Limited | Financial services | 2012 |