| Pgosnn Limited | Wholesale & retail | 2026 |
| PH Accountancy (Stockton) Limited | Professional & scientific | 2018 |
| PH Plant Services Limited | Manufacturing | 2014 |
| Pharm EWA Ltd | Professional & scientific | 2024 |
| Pharmera Limited | Health & social care | 2022 |
| Phat Parmo Ltd | Information & communication | 2023 |
| Philip Bramley Logistics Ltd | Transport & logistics | 2025 |
| Phillips HQ Ltd | Real estate | 2024 |
| Phoelex Ltd | Information & communication | 2015 |
| Phoenix Fall Protection Ltd | Construction | 2023 |
| Phoenix Properties (NE) Limited | Real estate | 2017 |
| Phoenix Youth Training Ltd | Education | 2011 |
| Picasso Pizzeria Ltd | Hospitality | 2025 |
| Piccolo Pizzeria Limited | Hospitality | 2025 |
| Pickerings Europe Limited | Manufacturing | 1996 |
| Pickerings Limited | Extraterritorial | 1980 |
| Picknpackit Ltd | Other services | 2020 |
| Picture House Productions Ltd | Real estate | 2022 |
| Piervale Limited | Other services | 1988 |
| Pietro's Barbering Company Limited | Other services | 2025 |
| Pillar III Developments Limited | Construction | 2014 |
| Pilot Engineering & Technology Ltd | Professional & scientific | 2016 |
| Pindkalan Group Ltd | Hospitality | 2024 |
| Pine River Capital Management (UK) Limited | Administrative & support | 2003 |
| Pinion Financial Planning Limited | Professional & scientific | 2025 |
| Pink Blue Limited | Other services | 2023 |
| Pink FOX Properties Ltd | Real estate | 2022 |
| Pink Gorilla Ltd | Construction | 2015 |
| Pink Punk (NE) Limited | Other services | 2021 |
| PIP Elliott Limited | Professional & scientific | 2012 |
| Pipeline CAD Design Ltd | Construction | 2020 |
| Pippinday Ltd | Extraterritorial | 2018 |
| Pitchblack Creative Limited | Professional & scientific | 2012 |
| Pivota UK Ltd | Professional & scientific | 2023 |
| Pivotpm Limited | Professional & scientific | 2021 |
| Pixelhaven Collective Ltd | Information & communication | 2025 |
| Pixelvortex Ltd | Information & communication | 2024 |
| Pixie Pots Limited | Manufacturing | 2021 |
| Pixlcade C.I.C. | Manufacturing | 2023 |
| Pixovo Web Design Ltd | Information & communication | 2024 |
| Pizza Bytes Stockton Ltd | Hospitality | 2025 |
| Pizza Castle Sedgefield Ltd | Hospitality | 2026 |
| Pizza Hotline Ltd | Hospitality | 2021 |
| Pizza Kinks and Shawarma Ltd | Hospitality | 2026 |
| Pizza Palace AM Ltd | Hospitality | 2024 |
| Pizzaland 272 Ltd | Hospitality | 2026 |
| Pizzarella Express Ingelby Ltd | Hospitality | 2026 |
| PJ Pizzeria & Grill Ltd | Hospitality | 2024 |
| PJ Refinery Services Limited | Professional & scientific | 2007 |
| PJB Offshore Limited | Mining & quarrying | 2020 |
| PJC Power Project Support Ltd | Administrative & support | 2014 |
| PJJ Limited | Transport & logistics | 2014 |
| Pjpizza Ltd | Hospitality | 2025 |
| PJW Property Investments Ltd | Real estate | 2024 |
| PKA Technical Ltd | Construction | 2014 |
| PKE Electrical Services Ltd | Professional & scientific | 2014 |
| PKK Holdings Limited | Financial services | 2019 |
| Places for Rent Limited | Real estate | 2017 |
| PLAN2PLAN (NE) Ltd | Professional & scientific | 2021 |
| Planhappy Investment Management Ltd | Financial services | 2015 |
| Planhappy Ltd | Information & communication | 2017 |
| Planhappy Trustees Limited | Financial services | 2022 |
| Plantpro Hire & Sales Ltd | Administrative & support | 2012 |
| Plants Ninety SIX Ltd | Hospitality | 2026 |
| Platinum Entertainments Ltd | Administrative & support | 2024 |
| Platinum Products Direct Limited | Wholesale & retail | 2013 |
| Platinum Project Solutions Limited | Professional & scientific | 2016 |
| Platinum Properties (GB) Limited | Real estate | 2004 |
| Platinum Properties Stockton Limited | Real estate | 2025 |
| PLC Limited | Manufacturing | 2024 |
| PLG 88 Asset Management Ltd | Financial services | 2025 |
| Plis Build Ltd | Construction | 2025 |
| PLL Construction Ltd | Construction | 2024 |
| PLS Site Services Ltd | Manufacturing | 2009 |
| Plus Fives Afterschool & Holiday Club Ltd | Health & social care | 2017 |
| PM Offshore Services Limited | Administrative & support | 2017 |
| PMC Music Ltd | Arts & recreation | 2022 |
| PMC Worldwide Engineering Ltd | Professional & scientific | 2012 |
| PMG Project Control Solutions Ltd | Administrative & support | 2011 |
| Pmg's Online Store Ltd | Wholesale & retail | 2025 |
| PML Skincare Limited | Health & social care | 2016 |
| PMO54 Ltd | Professional & scientific | 2023 |
| PNK People Limited | Administrative & support | 2018 |
| Pockets Access Ltd | Construction | 2026 |
| Podium Breaks Limited | Wholesale & retail | 2024 |
| Pondview Convenience Store Ltd | Wholesale & retail | 2018 |
| Pondview Tearooms Ltd | Hospitality | 2018 |
| Popcorn Catering Holdings Limited | Hospitality | 2025 |
| Poppy Telecoms Ltd | Professional & scientific | 2023 |
| Poppys Hairdressing Hartlepool Limited | Other services | 2006 |
| Pork on Your Fork Limited | Manufacturing | 2018 |
| Portal Cladding Services Limited | Construction | 2014 |
| Portal Kitchens Limited | Construction | 2017 |
| Portalclad Limited | Construction | 1998 |
| Portland Estates Management Ltd | Professional & scientific | 2020 |
| Portrack Developments Limited | Construction | 2005 |
| Posh Boutique Ltd | Wholesale & retail | 2009 |
| POT and WOK Ltd | Hospitality | 2023 |
| Powdh Ltd | Hospitality | 2024 |
| Powell Lettings Ltd. | Real estate | 2018 |