| PMB Brickwork Ltd | Construction | 2021 |
| PMB Group Holdings Ltd | Extraterritorial | 2023 |
| PMC Energies Ltd | Construction | 2024 |
| PMC Technical Solutions Limited | Professional & scientific | 2011 |
| PMM PMO Ltd | Information & communication | 2016 |
| PMW Site Services Ltd | Construction | 2024 |
| PN Financial Limited | Administrative & support | 2016 |
| PND Consulting Limited | Professional & scientific | 1996 |
| Pneuma Automotive Group Limited | Administrative & support | 2023 |
| Pneuma Business Services Limited | Administrative & support | 2023 |
| Pneuma Commercial Cleaning Limited | Administrative & support | 2023 |
| Pneuma Commercial Property Limited | Administrative & support | 2023 |
| Pneuma Commercial Security Limited | Administrative & support | 2023 |
| Pneuma Games Group Limited | Administrative & support | 2023 |
| Pneuma Group Limited | Administrative & support | 2022 |
| Pneuma Hospitality Group Limited | Administrative & support | 2023 |
| Pneuma Legal Services Limited | Administrative & support | 2025 |
| Pneuma Property Group Limited | Administrative & support | 2023 |
| Pneuma Residential Properties Limited | Administrative & support | 2023 |
| Pneuma Technology Solutions Limited | Administrative & support | 2025 |
| Pnlaw Ltd | Professional & scientific | 2022 |
| PNS Energy Ltd | Construction | 2020 |
| Podish VIS Ltd | Manufacturing | 2026 |
| Pol-Build NE Ltd | Construction | 2018 |
| Polar (N.E.) Limited | Construction | 1983 |
| Polar Anticlimb Ltd | Construction | 2024 |
| Polarity Metrics Limited | Information & communication | 2026 |
| Poljem E & I Consultants Limited | Administrative & support | 2009 |
| Polka UK Ltd | Wholesale & retail | 2020 |
| Pollitt Racing & Events Ltd | Arts & recreation | 2014 |
| Pollitt Services Limited | Wholesale & retail | 2016 |
| Pollock Properties UK Limited | Real estate | 2006 |
| Polmed Limited | Health & social care | 2010 |
| Polron Safety Solutions Ltd | Construction | 2020 |
| Polski Sklep North East Limited | Wholesale & retail | 2016 |
| Polton Allstars Football Academy CIC | Arts & recreation | 2015 |
| Polton Training Academy Ltd | Education | 2018 |
| Pomegranate Persian Bakery Ltd | Manufacturing | 2022 |
| Pomegrenade Limited | Wholesale & retail | 2026 |
| Pondering Panda Ltd | Information & communication | 2025 |
| POP Inn Pizzeria Limited | Administrative & support | 2016 |
| Poppy's Caffe Ltd | Manufacturing | 2024 |
| Poppy's Maids & Mops Ltd | Administrative & support | 2026 |
| Porsoman Limited | Construction | 2018 |
| Port Clarence Fabrications Limited | Manufacturing | 2025 |
| Port Clarence Logistics Limited | Real estate | 2006 |
| Port Middlesbrough Ltd | Extraterritorial | 2020 |
| Port of Middlesbrough Ltd | Transport & logistics | 2019 |
| Portland Developments (North East) Limited | Real estate | 2005 |
| Portland Developments Holdings Ltd | Financial services | 2023 |
| Posh Pony Productions Ltd | Administrative & support | 2025 |
| Positive Foundations Ltd | Real estate | 2019 |
| Positive Individual Proactive Support Limited | Health & social care | 2014 |
| Positive Support for YOU CIC | Health & social care | 2009 |
| Post Completion Services Ltd | Professional & scientific | 2023 |
| Pound JAR Limited | Professional & scientific | 2019 |
| Povi Retail Limited | Wholesale & retail | 2025 |
| Powell's Butcher's Ltd | Wholesale & retail | 2018 |
| Powerpoint Utilities Ltd | Energy | 2025 |
| PP E&I Consultancy Ltd | Professional & scientific | 2022 |
| PP Luxury Beauty Home Limited | Other services | 2025 |
| Ppan Ltd | Hospitality | 2026 |
| PR Plant and Commercial Services Ltd | Manufacturing | 2023 |
| PR Training & Consultancy Limited | Education | 2023 |
| PRE Book Taxis Limited | Transport & logistics | 2022 |
| Precision Call Solutions Ltd | Information & communication | 2025 |
| Precision Care Limited | Health & social care | 2016 |
| Precision Site Services Ltd | Construction | 2025 |
| Preece Group Ltd | Construction | 2025 |
| Preet Fashions NE Ltd | Wholesale & retail | 2025 |
| Preferred Air Quality Management Services Limited | Other services | 2025 |
| Preloved Prams NE Limited | Wholesale & retail | 2026 |
| Premier Business Solutions Ltd | Professional & scientific | 2019 |
| Premier Investments NE Ltd | Real estate | 2024 |
| Premier Player Academy Ltd | Arts & recreation | 2013 |
| Premier Player Education Limited | Education | 2015 |
| Premier UK Business LLP | | 2013 |
| PREMIER1 Filtration Limited | Manufacturing | 2008 |
| Premiercad.Com Limited | Construction | 1989 |
| Premium Top Cars UK Ltd | Wholesale & retail | 2026 |
| Prereal Ltd | Professional & scientific | 2023 |
| Press on Vinyl Ltd | Wholesale & retail | 2020 |
| Pressick Commercials Limited | Wholesale & retail | 2006 |
| Prest Company Holdings Co Ltd | Financial services | 2023 |
| Prestige Integrated Services Limited | Hospitality | 2026 |
| Prestige Joinery Limited | Construction | 2022 |
| Prestige Legals Direct Limited | Financial services | 2020 |
| Prestige Painting Contractors Ltd | Construction | 2019 |
| Prestige Wealth Investment Ltd | Financial services | 2025 |
| Prestige Wordwide Lifting Ltd | Professional & scientific | 2025 |
| Preston & Co. Properties Ltd | Real estate | 2025 |
| Preston Lettings Limited | Real estate | 2017 |
| Preston Mechanical Services Ltd | Professional & scientific | 2026 |
| Preston Newlove Construction Ltd | Construction | 2013 |
| Pretty Aura Ltd | Other services | 2026 |
| Pretty Little Limited | Wholesale & retail | 2012 |
| Prettygate Dental Practice Limited | Health & social care | 2007 |
| PRH Teesside Ltd | Wholesale & retail | 2019 |
| Price Right Properties Limited | Construction | 2000 |
| PRICED4U Ltd | Wholesale & retail | 2023 |