| Printer World Ltd | Wholesale & retail | 2025 |
| Printwise Limited | Manufacturing | 2002 |
| Priority Group NE Limited | Construction | 2025 |
| Prism Coffee LAB and Roaster Ltd | Manufacturing | 2026 |
| Prism Coffee UK Limited | Wholesale & retail | 2023 |
| Prism Financial Advice Limited | Financial services | 2004 |
| PRJ Commerce Ltd | Wholesale & retail | 2026 |
| Pro Active Plumbing Services Ltd | Construction | 2021 |
| Pro Block Paving Limited | Construction | 2017 |
| Pro Medicodent Ltd | Health & social care | 2019 |
| Pro-Rex Properties Ltd | Real estate | 2021 |
| Proactive Safety Verification Ltd | Professional & scientific | 2021 |
| Procore Staffing Ltd | Administrative & support | 2024 |
| Progress Care Team Ltd | Real estate | 2022 |
| Project Fluency Ltd | Information & communication | 2025 |
| Prolay Carpets Ltd | Construction | 2025 |
| Promethean Learning Environment Ltd | Education | 2024 |
| Prontax Limited | Professional & scientific | 1996 |
| Pronto Plumber & Electrical Limited | Construction | 2025 |
| Pronto Plumbers Limited | Construction | 2024 |
| Pronto Tyres & Wheels Limited | Wholesale & retail | 2025 |
| Proper Mint Concerts Ltd | Information & communication | 2022 |
| Proper Pies & Cakes Ltd | Wholesale & retail | 2025 |
| Proper Test Limited | Information & communication | 2015 |
| Propertial Ltd | Real estate | 2020 |
| Properties Unique Limited | Real estate | 2004 |
| Property 002 Ltd | Extraterritorial | 2012 |
| Property BJ Limited | Real estate | 2017 |
| Property Compliance NE Maintenance & Refurbs Ltd | Construction | 2025 |
| Property Construction Northern Ltd | Manufacturing | 2015 |
| Property Direct @ Ltd | Construction | 2019 |
| Property Holdings (NE) Limited | Real estate | 2016 |
| Property Investors Deal Maker Ltd | Real estate | 2025 |
| Property Logic Investments Limited | Real estate | 2006 |
| Property Master NE Ltd | Real estate | 2021 |
| Property Protection Systems Ltd | Construction | 2005 |
| Property Savings Group Ltd | Professional & scientific | 2023 |
| Property Solutions North East Limited | Administrative & support | 2017 |
| Property Sourcing (NE) Limited | Real estate | 2018 |
| Proserv Mechanical & Electrical Ltd | Construction | 2017 |
| Prospect Leisure Limited | Hospitality | 2018 |
| Prospects for People With Learning Disabilities | Health & social care | 1997 |
| Prospects Trading Limited | Wholesale & retail | 1996 |
| Prospera Dynamics Limited | Professional & scientific | 2026 |
| Protec Plastic Protectors Limited | Professional & scientific | 1993 |
| Protec Security Ltd | Administrative & support | 2022 |
| Protect and Connect Ltd | Information & communication | 2023 |
| PROTECT30 Ltd | Administrative & support | 2020 |
| Protection Installation Services Ltd | Manufacturing | 2007 |
| Protector Midlands Limited | Administrative & support | 2020 |
| Protein Patisserie Ltd | Hospitality | 2023 |
| Protogé CIC | Information & communication | 2021 |
| Proudfoot Property Investments Limited | Households | 2025 |
| Provincial Seals Limited | Administrative & support | 2005 |
| PRT Engineering Consultants Limited | Information & communication | 2007 |
| Prudhoe Motor Company Limited | Wholesale & retail | 2025 |
| PS Newcastle Healthcare Limited | Health & social care | 2018 |
| PS Testing Services Ltd | Administrative & support | 2022 |
| PSA Minerals Limited | Administrative & support | 2017 |
| PSL Fire & Security Limited | Administrative & support | 2019 |
| PSL Security Systems Ltd | Extraterritorial | 2008 |
| PSM (NE) Ltd | Financial services | 2020 |
| Psne Limited | Health & social care | 2015 |
| Psych Aesthetics Ltd | Wholesale & retail | 2019 |
| PT & RP Morrison Limited | Construction | 2001 |
| PT & RP Morrison Renewables Ltd | Energy | 2022 |
| PTF Treasury Consulting Ltd | Administrative & support | 2021 |
| Pudding Chare Developments Limited | Real estate | 1995 |
| Puffinator Ltd | Professional & scientific | 2026 |
| Pumkin and the House of Rubik Ltd | Wholesale & retail | 2023 |
| Punica Group Ltd | Financial services | 2022 |
| Punjab Caterer Ltd | Hospitality | 2018 |
| Punks Don’T DO Yoga Ltd | Information & communication | 2025 |
| Punkture Body Piercing Limited | Other services | 2015 |
| Punton Wholesale Ltd | Wholesale & retail | 2026 |
| Purdell Properties Limited | Real estate | 2020 |
| Purdy Fabrication & Welding Limited | Manufacturing | 2003 |
| Pure Financial Decisions Limited | Financial services | 2015 |
| Pure Financial Holdings Ltd | Professional & scientific | 2015 |
| Purlo Group Ltd | Administrative & support | 2026 |
| Purlo Limited | Administrative & support | 2012 |
| Purmo Group (UK) Ltd | Manufacturing | 1960 |
| Purmo Group UK Pension Trustee Limited | Administrative & support | 2000 |
| Purple Cobras Grill Bar Ltd | Hospitality | 2024 |
| Purple Finance Limited | Administrative & support | 2016 |
| Purple Monkey Properties Ltd | Real estate | 2017 |
| Purple Property Services Ltd | Construction | 2016 |
| Purr Tech Limited | Wholesale & retail | 2026 |
| Pusinky Limited | Transport & logistics | 2026 |
| Putting IT Into Practice Ltd | Education | 2009 |
| PW Joinery and Building Solutions Limited | Manufacturing | 2026 |
| PY Nail & Beauty Limited | Other services | 2020 |
| Pyzen Ltd | Information & communication | 2023 |
| Q Commercial Access Ltd | Construction | 2018 |
| Q Commercial Ltd. | Construction | 2015 |
| Q.A Locums Ltd | Wholesale & retail | 2021 |
| QAF Research & Legal Consulting Ltd | Professional & scientific | 2025 |
| QE Facilities Limited | Administrative & support | 2014 |
| Qngc Limited | Wholesale & retail | 2014 |
| QP Jewellers (UK) Ltd | Professional & scientific | 2013 |