| Palladian (Kilham) Limited | Real estate | 2015 |
| Palladian (Knavesmire) Ltd | Real estate | 2025 |
| Palladian (Marton) Limited | Construction | 2020 |
| Palladian (North East) Limited | Administrative & support | 2023 |
| Pallicoat Ltd | Construction | 2025 |
| Palma MA Ltd | Wholesale & retail | 2025 |
| Panascend Limited | Construction | 2025 |
| Panjtan Retail Durham Ltd | Wholesale & retail | 2022 |
| Pankhurst Investigative Interviewing Consultancy Ltd | Professional & scientific | 2021 |
| PAR Properties Ltd | Real estate | 2017 |
| Paradise Farm (Ruffside) Limited | Financial services | 2021 |
| Paradise Pizza (N/E) Ltd | Hospitality | 2018 |
| Paradise Precision Halters Ltd | Wholesale & retail | 2023 |
| Paramount Contract Services Ltd | Construction | 2025 |
| Paramount Maintenance Ltd | Construction | 2025 |
| Pargeter Offshore Services Limited | Construction | 2016 |
| Parish Construction (NE) Ltd | Construction | 2017 |
| Parish Power Group Holdings Ltd | Financial services | 2019 |
| Parish Power Group Ltd | Professional & scientific | 2019 |
| Parish Power Opco Ltd | Administrative & support | 2019 |
| Parish Power Propco Ltd | Administrative & support | 2019 |
| Park Commercial Limited | Financial services | 2008 |
| Park Smart NE Ltd | Transport & logistics | 2025 |
| Park View Academy of Sport Limited | Arts & recreation | 2022 |
| Park View International Academy Ltd | Education | 2020 |
| Parkhead Developments (Hexham) Limited | Hospitality | 2007 |
| Parkin Trade Ltd | Wholesale & retail | 2023 |
| Parking Group (Newcastle 1) Limited | Other services | 2025 |
| Parking Group Commercial Services Limited | Other services | 2022 |
| Parking Group Limited | Other services | 2020 |
| Parking Only Limited | Professional & scientific | 2017 |
| Parks Haulage Limited | Transport & logistics | 2014 |
| Parmo House Limited Ltd | Hospitality | 2025 |
| Parvenir Properties Ltd | Real estate | 2025 |
| Pasco Electrical Contractors Limited | Construction | 2013 |
| Pasha Style Barber Shop Ltd | Other services | 2025 |
| Pathertondriver Ltd | Transport & logistics | 2026 |
| Patrolsync Ltd | Information & communication | 2026 |
| Patterdale Properties Ltd | Real estate | 2024 |
| Pattotek Ltd | Information & communication | 2003 |
| Paul Bowden Hairdressing Limited | Other services | 2003 |
| Paul Dunster Ltd | Professional & scientific | 2025 |
| Paul Facey Engineering Surveys Ltd | Professional & scientific | 2015 |
| Paul Hatchett Consulting Limited | Professional & scientific | 2021 |
| Paul Lucherini Ltd | Professional & scientific | 2022 |
| Paul's Deliverys Ltd | Transport & logistics | 2026 |
| Pauls Optical Ltd | Other services | 2017 |
| Paygo Ltd | Administrative & support | 2021 |
| PB Roofing & Sons (NE) Ltd | Construction | 2025 |
| PC Durham Ltd | Construction | 2022 |
| PC Trends Limited | Information & communication | 2008 |
| PCD Cleaning Ltd | Administrative & support | 2025 |
| PD Brickwork Ltd | Construction | 2014 |
| PDA Search & Selection Limited | Administrative & support | 2000 |
| PDQ Equestrian Company Limited | Agriculture & fishing | 2003 |
| PDY GAS Limited | Professional & scientific | 2025 |
| Peacock Carter Limited | Information & communication | 2009 |
| Peak 365 Limited | Information & communication | 2023 |
| Peak Prime Ltd | Wholesale & retail | 2024 |
| Pearcealberts Holdings Ltd | Financial services | 2024 |
| Pearson Developments Ltd | Real estate | 2019 |
| Pebbles Energy Limited | Administrative & support | 2014 |
| Peckglobal Ltd | Wholesale & retail | 2024 |
| Pedepraia Ltd | Manufacturing | 2024 |
| Pegasus Psychology Limited | Professional & scientific | 2009 |
| Pegasus Store UK Ltd | Wholesale & retail | 2025 |
| Pelle Laser Clinic Limited | Other services | 2021 |
| Pendleton Bros Ltd | Construction | 2026 |
| Pendragon Company Management Ltd | Wholesale & retail | 2025 |
| Penfould Heating & Renewables Ltd | Construction | 2022 |
| Penhalonga Trading Company Limited | Professional & scientific | 2010 |
| Pennytainment Ltd | Arts & recreation | 2025 |
| People Spark Solutions Ltd | Administrative & support | 2019 |
| People's Action Ltd | Other services | 2023 |
| Peoples-Jay Limited | Health & social care | 2018 |
| Pepmotec Limited | Professional & scientific | 2019 |
| Peranova Ltd | Wholesale & retail | 2026 |
| Perbelle Limited | Professional & scientific | 2014 |
| Perform 365 Fitness Limited | Arts & recreation | 2023 |
| Perfume Road Limited | Manufacturing | 2021 |
| Pet BIZ Marketing Ltd | Professional & scientific | 2021 |
| Pet Cemetery Limited | Professional & scientific | 2001 |
| Pet Winning Holdings Ltd | Professional & scientific | 2025 |
| Pet Winning Solutions Limited | Professional & scientific | 2025 |
| Peter a Hodgson & Co Limited | Professional & scientific | 2003 |
| Peter Allen Surveyors Limited | Real estate | 2001 |
| Peter Edmund Rome Ltd | Extraterritorial | 2025 |
| Peter Moss Bespoke Flooring Ltd | Construction | 2016 |
| Peter Sheahan Coaching & Teaching Ltd | Education | 2017 |
| Peter Storey Logistics Ltd | Transport & logistics | 2025 |
| Peter Stott Properties Ltd | Construction | 2001 |
| Peterlee PSV Ltd | Wholesale & retail | 2026 |
| Petite Street Play Town Ltd | Arts & recreation | 2017 |
| Petri Culture Limited | Arts & recreation | 2021 |
| Petworking Durham CIC | Education | 2026 |
| PFA Logistic Limited | Financial services | 2025 |
| PGN Construction Ltd. | Construction | 2015 |
| PH Indie Enterprises Ltd | Wholesale & retail | 2024 |
| Ph&Co Limited | Professional & scientific | 2012 |
| Phaeton Properties Limited | Financial services | 2021 |