| Pram Properties Ltd | Real estate | 2015 |
| Pranees Thai Restaurant and Cafe Limited | Hospitality | 2024 |
| Prashan Ltd | Wholesale & retail | 2023 |
| Prebeat Ltd | Wholesale & retail | 2015 |
| Precious Documentation Services Limited | Other services | 1991 |
| Preciousvita UK Limited | Wholesale & retail | 2024 |
| Precision (Holdings) NE Limited | Real estate | 2019 |
| Precision Design Solutions Ltd | Construction | 2025 |
| Premier Lakeballs Limited | Wholesale & retail | 2003 |
| Presspeed Precision Tools Limited | Manufacturing | 1994 |
| Prestige Cable Installations Ltd | Construction | 2018 |
| Prestige Properties Hartlepool Ltd | Real estate | 2024 |
| Prestige Redcar Ltd | Wholesale & retail | 2024 |
| Prestige Refurbs & Design Limited | Manufacturing | 2025 |
| Prestige Worldwide Engineering Ltd | Professional & scientific | 2022 |
| Prestigelivingproperty Ltd | Real estate | 2025 |
| Presto Teesside Limited | Wholesale & retail | 2023 |
| Pretty Little People Limited | Wholesale & retail | 2024 |
| Pretty N Polished Ltd | Administrative & support | 2021 |
| Priest Electrical Services Limited | Construction | 2015 |
| Prima Bifolds Ltd | Manufacturing | 2018 |
| Prima Windows (Hartlepool) Ltd | Construction | 2008 |
| Primary Couriers Ltd | Transport & logistics | 2023 |
| Prime Developments (MB) Limited | Real estate | 2026 |
| Prime Hair Limited | Other services | 2018 |
| Prime Inspection Ltd | Professional & scientific | 2023 |
| Prime Properties (MB) Ltd | Real estate | 2020 |
| Prime Talent Sports Group Ltd | Arts & recreation | 2018 |
| Primiiozz Limited | Wholesale & retail | 2025 |
| Princ Limited | Wholesale & retail | 2025 |
| Printworks Ltd | Manufacturing | 2026 |
| Prizey Competitions Ltd | Arts & recreation | 2026 |
| Pro CV Auto Electrics Limited | Wholesale & retail | 2026 |
| Pro Profil International Limited | Professional & scientific | 2020 |
| Pro Tread Tyres Ltd | Wholesale & retail | 2025 |
| Proactive Mechanical Services Ltd | Professional & scientific | 2017 |
| Procedo Leisure Ltd | Hospitality | 2015 |
| Progress Through Technology Ltd | Wholesale & retail | 2021 |
| Progressing Futures CIC | Education | 2024 |
| Progressive Media & Design Ltd | Administrative & support | 2022 |
| Progressive Siphonic Systems Ltd | Construction | 2020 |
| Projektconsult Ltd | Professional & scientific | 2023 |
| Proofyard Limited | Manufacturing | 2013 |
| Proper Mint Investments Ltd | Arts & recreation | 2025 |
| Proper Mint Marketing Ltd | Professional & scientific | 2022 |
| Property AID Ltd | Real estate | 2017 |
| Property M8 Development Ltd | Real estate | 2021 |
| Property Webmasters Ltd | Information & communication | 2007 |
| Propipe Ltd | Manufacturing | 1997 |
| Proplug Limited | Manufacturing | 2001 |
| Proppa Jobs Campaign CIC | Construction | 2024 |
| Propx Investment Ltd | Real estate | 2024 |
| PROTECH1 Ltd | Manufacturing | 2023 |
| PRT Integrity Ltd | Manufacturing | 2021 |
| PS Hartlepool Ltd | Hospitality | 2018 |
| PS Management Limited | Administrative & support | 2026 |
| Psc-Uk Limited | Professional & scientific | 2021 |
| PSF Division Ltd | Professional & scientific | 2026 |
| PTP Management Services Limited | Professional & scientific | 2023 |
| Public Domain Flix Limited | Hospitality | 2020 |
| Pubtec Ltd | Construction | 2019 |
| Pull Force Ltd | Construction | 2026 |
| Pulse Studio Ltd | Arts & recreation | 2025 |
| Pure Ventures Professional Services Ltd | Professional & scientific | 2023 |
| Purify Exterior Cleaning Ltd | Administrative & support | 2021 |
| PW Subsea Services Ltd | Manufacturing | 2015 |
| QAI Consultants Limited | Mining & quarrying | 2017 |
| QRS Precision Engineering Limited | Professional & scientific | 2003 |
| Quaker Gill Limited | Real estate | 2012 |
| Qualitas Mechanical Engineering Limited | Professional & scientific | 2012 |
| Quality Verification Services Ltd | Professional & scientific | 2023 |
| Quantum Electrics Limited | Construction | 2009 |
| Queeenbs Ltd | Hospitality | 2023 |
| Quick and Quick UK Ltd | Wholesale & retail | 2025 |
| Quick Utilities Limited | Administrative & support | 2018 |
| Quindent Properties Ltd | Construction | 2020 |
| Quinthivi Ltd | Wholesale & retail | 2026 |
| R Aaryan Limited | Wholesale & retail | 2025 |
| R P Kothari Limited | Real estate | 2026 |
| R P Mechanical Services Limited | Other services | 2017 |
| R&A Telecommunications Services Ltd | Information & communication | 2025 |
| R. a. & S. Darling Farms (Hartlepool) Limited | Agriculture & fishing | 1996 |
| R.A.M Building Solutions Ltd | Construction | 2025 |
| R.G.K Services Limited | Construction | 2023 |
| R@N Minerals Limited | Wholesale & retail | 2026 |
| RA Quality Limited | Administrative & support | 2017 |
| Raby Arms Hart Limited | Hospitality | 2017 |
| Race Properties Limited | Real estate | 2016 |
| Radio Holland UK Ltd | Manufacturing | 2016 |
| RAF Rigging & Lifting Limited | Construction | 2025 |
| Rafferty's Sofa & BED Store Limited | Wholesale & retail | 2016 |
| Ragnar Properties Ltd | Administrative & support | 2026 |
| Railway Cafe Hartlepool Limited | Hospitality | 2014 |
| Rainbow Aesthetics Limited | Other services | 2022 |
| Rains Electrical Limited | Construction | 2019 |
| Rambo Hand Car Wash Ltd | Wholesale & retail | 2026 |
| Rank Intuition Ltd | Professional & scientific | 2021 |
| Rare Beasts Gym Limited | Education | 2020 |
| Rasul Properties (NE) Limited | Real estate | 2024 |
| Rawlings Courier Services Ltd | Transport & logistics | 2021 |