| Paws to Ponies Animal Physio Ltd | Professional & scientific | 2022 |
| Pawsome Walks Ltd | Agriculture & fishing | 2018 |
| Payswap Limited | Professional & scientific | 2015 |
| Payswop Limited | Professional & scientific | 2015 |
| PB Luxury Homes Ltd | Construction | 2018 |
| PB Wind Ltd | Professional & scientific | 2021 |
| Pb-Landscapes and Groundworks.Ne Ltd | Administrative & support | 2024 |
| Pbce Limited | Financial services | 2024 |
| PBE Properties Limited | Real estate | 2024 |
| Pbrc NE Ltd | Hospitality | 2025 |
| Pbsbt Limited | Construction | 2014 |
| PC Access & Supervision Ltd | Professional & scientific | 2024 |
| PC Cars (NE) Limited | Transport & logistics | 2018 |
| PC Engineering Services Ltd | Professional & scientific | 2026 |
| PC Insulation Services Ltd | Manufacturing | 2017 |
| PC Rigging Services Limited | Construction | 2019 |
| Pcfgstudy Ltd | Education | 2024 |
| PCH Services Limited | Construction | 2021 |
| Pctcr Limited | Financial services | 2026 |
| PD & J Properties Ltd | Real estate | 2025 |
| PD Access Limited | Construction | 2017 |
| PD Admin Services Ltd | Administrative & support | 2018 |
| PD Lifting Ltd | Construction | 2024 |
| PD Port Services Limited | Transport & logistics | 1975 |
| PD Ports Humber Limited | Professional & scientific | 2007 |
| PD Ports Limited | Financial services | 2009 |
| PD Ports Properties Limited | Real estate | 1977 |
| PD Shipping & Inspection Services Limited | Transport & logistics | 1956 |
| PDM Hideaways Ltd | Hospitality | 2025 |
| Pdmi Crane Training Solutions Limited | Administrative & support | 2016 |
| Pdps Technical Services Ltd | Construction | 2025 |
| PEA & the Pangolin Ltd | Information & communication | 2023 |
| PEA Soup Limited | Wholesale & retail | 2003 |
| Peacock & Sons Ltd | Real estate | 2023 |
| Peak Commercial Limited | Professional & scientific | 2025 |
| Peaky Barbers (North East) Limited | Other services | 2018 |
| Pear Tree Property Enterprises Limited | Real estate | 2022 |
| Pearl Offshore Limited | Manufacturing | 2023 |
| Pearwasp Properties Ltd | Real estate | 2025 |
| Pecynski Tomasz 0484 Limited | Transport & logistics | 2014 |
| Pedigree Inspection Ltd | Other services | 2023 |
| PEE GEE Properties Limited | Real estate | 2014 |
| Peloche Entertainment Limited | Administrative & support | 2025 |
| Pemberton Baker Services Ltd | Professional & scientific | 2016 |
| PEN & Papers Ltd | Administrative & support | 2025 |
| Penelward Limited | Professional & scientific | 2021 |
| Pennine Forestry Limited | Wholesale & retail | 2012 |
| Penton House Limited | Water & waste | 2012 |
| Pepper Properties Limited | Real estate | 2016 |
| Pepperarden Limited | Administrative & support | 2015 |
| Peptide Pharma UK Limited | Wholesale & retail | 2025 |
| Perada Limited | Real estate | 2017 |
| Perfect Food (NE) Ltd | Hospitality | 2025 |
| Perfect Smile Newcastle Limited | Health & social care | 2014 |
| Perfecta Security Services Ltd | Administrative & support | 2024 |
| Perform Advertising Limited | Professional & scientific | 2013 |
| Peri Peri Hermanos Ingleby B Ltd | Hospitality | 2025 |
| Peri Peri Hermanos N Ormesby Ltd | Hospitality | 2020 |
| Peri Peri Hermnanos North Ltd | Hospitality | 2025 |
| Peri Peri N.O. Ltd | Hospitality | 2026 |
| Peri Peri Wholesale Ltd | Hospitality | 2025 |
| Peri Publishing Ltd | Information & communication | 2025 |
| Peron Limited | Professional & scientific | 2011 |
| Persian Cottage Ltd | Hospitality | 2015 |
| Peshawar Dera Ltd | Hospitality | 2024 |
| Pet Buddy Ltd | Wholesale & retail | 2026 |
| Pet Loss Support Foundation CIC | Health & social care | 2026 |
| Pet&R LLP | | 2011 |
| Petch Farms Ltd | Agriculture & fishing | 2011 |
| Petch Waters Limited | Real estate | 1999 |
| Peter Bourne Logistics Ltd | Transport & logistics | 2025 |
| Peter Conway Scaffolding Ltd | Construction | 2019 |
| Peter Mcnicholl Ltd | Professional & scientific | 2025 |
| Peter Osborne Design Services Limited | Professional & scientific | 2014 |
| Peter Smith (Floor and Wall Tiler) Limited | Construction | 2001 |
| Peter Solomon Bookkeeping Services Ltd | Professional & scientific | 2014 |
| Peter Speck Enterprises Limited | Manufacturing | 2025 |
| Peters Spares Model Railways Limited | Wholesale & retail | 2011 |
| Petes Pantry Limited | Hospitality | 2018 |
| Petrochemical Logistics Sustainability Solutions (Mark Appleyard) Limited | Professional & scientific | 2022 |
| PF Computers Limited | | 2012 |
| PFI Rigging Ltd | Construction | 2019 |
| PG Roofing (North East) Limited | Construction | 2023 |
| PG29 Limited | Other services | 2014 |
| PGK Access Limited | Construction | 2025 |
| PH Joinery Services Ltd | Construction | 2024 |
| Phani Ltd | Wholesale & retail | 2024 |
| Phantom LAB Ltd | Information & communication | 2009 |
| Pharma Controls Limited | Information & communication | 2008 |
| Pharma Nutrition Ltd | Wholesale & retail | 2025 |
| Pharmaceutical Health Consultants Limited | Professional & scientific | 2026 |
| Phase Training Company Ltd | Arts & recreation | 2026 |
| Phil Jarvis Bathrooms Limited | Construction | 2024 |
| Phil Johnson Financial Services Ltd | Financial services | 1998 |
| Philip Frew Limited | Construction | 2019 |
| Philip Laird Logistics Ltd | Transport & logistics | 2025 |
| Phillip Wilson Limited | Construction | 2007 |
| Philxam Limited | Administrative & support | 2010 |
| PHM Design Ltd | Administrative & support | 2025 |
| PHO3NIX Communications Ltd | Information & communication | 2020 |