| Pelma Medical Limited | Health & social care | 2017 |
| Pelma Property Investments Ltd | Real estate | 2021 |
| Pen-Gage Ltd | Professional & scientific | 2018 |
| Pendulum NE Limited | Real estate | 2024 |
| Pennine Home Improvements Ltd | Construction | 2023 |
| Penny Print Limited | Manufacturing | 2009 |
| Pentagon Developments UK Limited | Real estate | 2004 |
| Pentinha Limited | Professional & scientific | 2025 |
| Pentland Estates Ltd | Real estate | 2014 |
| Pentrooms Ltd | Real estate | 2025 |
| People and Process Consultants Limited | Professional & scientific | 2026 |
| People CAN FLY UK Limited | Information & communication | 2016 |
| Pepe Castro Locum Ltd | Professional & scientific | 2019 |
| Percy Food Ltd | Hospitality | 2024 |
| Percy Gardens Trust Committee - Pgtc Limited | Households | 2008 |
| Perfect Life Property Ltd | Real estate | 2025 |
| Perfect Polish Enterprises Limited | Wholesale & retail | 2013 |
| Peritus Capital Limited | Financial services | 2016 |
| Peritus Group (UK) Limited | Financial services | 2014 |
| Perpetual Succession Holdings Limited | Financial services | 2025 |
| Perrywell Limited | Other services | 2003 |
| Persian Taste Ltd | Hospitality | 2025 |
| Perth & Northumberland Property Maintenance Ltd | Administrative & support | 2015 |
| Petals Coaching Limited | Education | 2021 |
| Peter Blake Limited | Wholesale & retail | 1951 |
| Peter Blake(Chatsworth)Limited | Extraterritorial | 1967 |
| Peter Hawkins Cycling Services Limited | Arts & recreation | 2017 |
| Peter Maughan & Co Limited | Professional & scientific | 2020 |
| Petrichor Capital Securities Limited | Real estate | 2022 |
| Pewa Care CIC | Health & social care | 2024 |
| Peyote Restaurants Ltd | Hospitality | 2019 |
| Peyul Ltd | Real estate | 2019 |
| PF Installations Limited | Professional & scientific | 2003 |
| PG Legal Limited | Professional & scientific | 2011 |
| PGC Logistics Ltd | Transport & logistics | 2021 |
| Pgp&Co Ltd | Wholesale & retail | 2026 |
| PH Development Consulting Limited | Professional & scientific | 2025 |
| PH Pacific Construction Ltd. | Administrative & support | 2025 |
| PH Plastering (North East) Limited | Construction | 2025 |
| Pharmateck Limited | Wholesale & retail | 2023 |
| Philip Henry & Co (NE) Limited | Professional & scientific | 2015 |
| Phillips Safety Consultants Limited | Construction | 2024 |
| Phinste Limited | Information & communication | 2017 |
| Phoenix Wlsolutions Ltd | Information & communication | 2025 |
| Phoenixx Properties (NE ) Ltd | Real estate | 2025 |
| Phone Essence Ltd | Other services | 2019 |
| Phone Experts Gateshead Ltd | Wholesale & retail | 2025 |
| Phron Education Ltd | Information & communication | 2025 |
| PHS Consett Ltd | Wholesale & retail | 2017 |
| PHS Durham Ltd | Wholesale & retail | 2018 |
| PHS Gateshead Ltd | Wholesale & retail | 2020 |
| PHS Holdings Group (UK) Ltd | Wholesale & retail | 2016 |
| PHS North Shields Ltd | Wholesale & retail | 2016 |
| PHS South Shields Ltd | Wholesale & retail | 2017 |
| Physioshark Limited | Wholesale & retail | 2021 |
| Piccante Square Ltd | Hospitality | 2026 |
| Pick Pack and Deliver Limited | Administrative & support | 2023 |
| Pick Thai Cafe Ltd | Hospitality | 2024 |
| Pickabowl Limited | Wholesale & retail | 2025 |
| Pickle & Poglet Ltd | Administrative & support | 2025 |
| Pickles&Co Ltd | Information & communication | 2018 |
| Pico Surveying and Estimating Ltd | Professional & scientific | 2013 |
| Piekos Ltd | Health & social care | 2018 |
| Pier Physiotherapy Clinic Ltd | Health & social care | 2009 |
| Piercarlo Pizza Newcastle Ltd | Hospitality | 2024 |
| Pikerand Ltd | Real estate | 2013 |
| Pikku Ltd. | Other services | 2014 |
| Pilichowski Transport Ltd | Transport & logistics | 2020 |
| Pillsofts Limited | Information & communication | 2024 |
| PIN Point Recruitment Limited | Administrative & support | 2015 |
| Pinders Entertainment Limited | Arts & recreation | 2023 |
| Pineapple and Bears Birtley Limited | Hospitality | 2024 |
| Pineapple and Bears Ltd | Wholesale & retail | 2017 |
| Pinewood Motors Gateshead Ltd | Other services | 2001 |
| Pinnacle Services (North East) Limited | Other services | 2000 |
| Pinpoint (North East) Limited | Professional & scientific | 2003 |
| Pipe & Structure Inspection Ltd | Construction | 2016 |
| Pipeline Integrity Contractors Ltd | Construction | 2013 |
| Pirvan Ltd | Health & social care | 2013 |
| Pisl Holdings Limited | Financial services | 2022 |
| Pitwood Properties Ltd | Households | 2000 |
| Pixel and Block Ltd | Wholesale & retail | 2024 |
| Pixel Buddy Limited | Professional & scientific | 2021 |
| Pixel Printworks Ltd | Professional & scientific | 2024 |
| Pizza Box Limited | Hospitality | 2011 |
| Pizza Euro Limited | Hospitality | 2009 |
| Pizza Masters Gateshead Ltd | Hospitality | 2021 |
| Pizza Night Express Ltd | Hospitality | 2025 |
| Pizza XL Limited | Hospitality | 2023 |
| PJ (Team Valley) Limited | Transport & logistics | 2007 |
| PJH Renewable Energy Ltd | Professional & scientific | 2022 |
| Pjtradersltd Limited | Hospitality | 2023 |
| PK Associates (North East) Limited | Health & social care | 2015 |
| PK Property Associates Ltd | Real estate | 2021 |
| Placenumber Property Management Limited | Real estate | 1996 |
| Places FS Ltd | Financial services | 2020 |
| Places Mortgages LLP | | 2012 |
| Planest Ltd | Professional & scientific | 2023 |
| Planet Circus Equipment Limited | Arts & recreation | 2009 |
| Plastic Furniture Company Ltd | Manufacturing | 1991 |