| Portland Decor Ltd | Wholesale & retail | 2021 |
| Portland Hall Spa Limited | Other services | 2005 |
| Portland Lodge Association Limited | Real estate | 2000 |
| Portland Street Storage Limited | Real estate | 2023 |
| Portland Wine Cellars Ltd | Wholesale & retail | 2025 |
| Portuguese Translation Services Ltd | Information & communication | 2007 |
| Positive Outcomes Training and Consultancy Ltd | Administrative & support | 2021 |
| Positron Computers Limited | Manufacturing | 1979 |
| Positron Electronics Limited | Manufacturing | 1985 |
| Powerman Limited | Administrative & support | 1999 |
| Powerup Events Services Limited | Construction | 2017 |
| Powerup Performance Limited | Professional & scientific | 2023 |
| PP Installations Limited | Information & communication | 2013 |
| PPF Recruitment Limited | Administrative & support | 2023 |
| PR Hound Limited | Professional & scientific | 2024 |
| PR Student Properties Limited | Real estate | 2016 |
| PR7 Consulting Limited | Professional & scientific | 2020 |
| PR8 Commercial Limited | Professional & scientific | 2023 |
| PR9 Limited | Professional & scientific | 2012 |
| Praesidium IT Services Ltd | Information & communication | 2019 |
| Praesium Limited | Administrative & support | 2017 |
| Prakar Ltd | Professional & scientific | 2012 |
| Pram Wheels Ltd | Professional & scientific | 2022 |
| Praxis Evaluation and Research Community Interest Company | Administrative & support | 2010 |
| Prce Limited | Wholesale & retail | 2018 |
| PRE Loved Mobility Shop Ltd | Wholesale & retail | 2025 |
| Precision Auto Group Ltd | Wholesale & retail | 2023 |
| Precision Hearing Limited | Wholesale & retail | 2024 |
| Precision Pete Ltd | Construction | 2025 |
| Precision Service Centre Ltd | Wholesale & retail | 2025 |
| Premier Aesthetics Clinic Limited | Extraterritorial | 2014 |
| Premier Autocare Limited | Wholesale & retail | 2025 |
| Premier Automotive Repairs and Sales Ltd | Wholesale & retail | 2025 |
| Premier Design Solutions Limited | Professional & scientific | 2000 |
| Premier Group Holidays Limited | Administrative & support | 2016 |
| Premium Fire and Security Ltd | Administrative & support | 2019 |
| Premium Living (NW) Ltd | Real estate | 2015 |
| Premium P UK Limited | Wholesale & retail | 2025 |
| Prescoll Associates UK Limited | Professional & scientific | 2022 |
| Prescot Motor Factors Ltd | Wholesale & retail | 2025 |
| Prescot Service Station Ltd | Wholesale & retail | 2025 |
| Press Experts Limited | Manufacturing | 2014 |
| Prestige Gaming Limited | Wholesale & retail | 2022 |
| Prestige Property Conversions Ltd | Real estate | 2013 |
| Prestige View Shop Fitters Ltd | Construction | 2022 |
| Preston Anaesthetists Critical Care Cooperative Services LLP | | 2023 |
| Preston City Accountants Ltd | Professional & scientific | 2004 |
| Preston Property (Rentals) Ltd. | Real estate | 2014 |
| Preston Road Flat Management Ltd | Households | 2018 |
| PRG Manufacturing Limited | Manufacturing | 2023 |
| Primadigital Limited | Information & communication | 2010 |
| Primary Care Group Ltd | Professional & scientific | 2022 |
| Primary Care Xtra Limited | Health & social care | 2022 |
| Prime Consultancy 2000 Limited | Professional & scientific | 2023 |
| Prime Costings Ltd | Administrative & support | 2016 |
| Prime Legal (Holdings) Ltd | Professional & scientific | 2012 |
| Prime Legal (UK) Ltd | Professional & scientific | 2014 |
| Prime Line Decorating Ltd | Construction | 2025 |
| Primedge Properties Limited | Real estate | 2025 |
| Primer Group Ltd | Construction | 2025 |
| Princesse Grace Properties Ltd | Real estate | 2010 |
| Principled Financial Planning Limited | Financial services | 2018 |
| Print a Product Limited | Manufacturing | 2026 |
| Printdirect (U.K.) Limited | Manufacturing | 2000 |
| Prints of Heart Ltd | Professional & scientific | 2014 |
| Prioritise Health Limited | Health & social care | 2021 |
| Priority Bridging Limited | Financial services | 2012 |
| Priory Print Limited | Manufacturing | 1995 |
| Prntsy Ltd | Manufacturing | 2026 |
| Pro Buddy Ltd | Wholesale & retail | 2025 |
| Proaesthetics NW and Prohair Ltd | Other services | 2020 |
| Professional Properties Yorkshire Limited | Real estate | 2019 |
| Professional Skills Board Ltd | Education | 2025 |
| Profile - the Business Solutions Company Limited | Information & communication | 2002 |
| Proform Cladding Limited | Construction | 2011 |
| Progiftshop Limited | Wholesale & retail | 2024 |
| Project and Site Management Limited | Professional & scientific | 2017 |
| Project Leven Limited | Administrative & support | 2016 |
| Project Phoenix Ignite Ltd | Arts & recreation | 2025 |
| Projekting Construction Limited | Construction | 2017 |
| Prolakeballs Limited | Water & waste | 2015 |
| Proline Painting and Decorating Ltd | Construction | 2025 |
| Promenade Reformer Limited | Arts & recreation | 2025 |
| Promenade Taverns Ltd | Hospitality | 2018 |
| Prometheus Medical Group Ltd | Health & social care | 2022 |
| Property Choices-Uk Ltd | Real estate | 2025 |
| Property Maintenance (NW) Ltd | Construction | 2015 |
| Property Pitstop Southport Ltd | Real estate | 2025 |
| Propletting Ltd | Real estate | 2021 |
| Propmax Developments Limited | Construction | 2020 |
| Prosafe Access Solutions Ltd | Administrative & support | 2007 |
| Proseal Roofing Solution Ltd | Construction | 2026 |
| Prosperly Limited | Information & communication | 2024 |
| Providence Property Development Limited | Construction | 2016 |
| Provolt Electrical Solutions Limited | Construction | 2024 |
| PS Collective Ltd | Wholesale & retail | 2025 |
| PS Safety Group Limited | Financial services | 2024 |
| PSG1 Ltd | Wholesale & retail | 2019 |
| PSK Valeting Ltd | Administrative & support | 2023 |
| Psmerc Ltd | Professional & scientific | 2025 |