| Proactive Couriers Ltd | Transport & logistics | 2019 |
| Proactive Future Care Ltd | Health & social care | 2025 |
| Proactive HR ADM Ltd | Administrative & support | 2025 |
| Proactive Intervention Care Limited | Health & social care | 2021 |
| Proactive Synergy Ltd | Financial services | 2026 |
| Proadviser Ltd | Professional & scientific | 2020 |
| Probe Concierge and Security Services Limited | Administrative & support | 2013 |
| Probe Investigations Limited | Real estate | 2005 |
| Probe Protection Limited | Administrative & support | 2015 |
| Probe Services Group Ltd | Administrative & support | 2021 |
| Probe Surveyors Limited | Professional & scientific | 2026 |
| Probellum Limited | Other services | 2019 |
| Probevale Limited | Extraterritorial | 2008 |
| Problem Property Solutions Ltd | Real estate | 2026 |
| Probusiness Edge Limited | Education | 2017 |
| Procedural Worlds Ltd | Information & communication | 2008 |
| Process Communication Romania Ltd | Information & communication | 2020 |
| Process Facilitation Limited | Administrative & support | 2005 |
| Process-Sustainability Ltd | Professional & scientific | 2020 |
| Processiq Limited | Information & communication | 2009 |
| Proclean Equipment Solutions Limited | Wholesale & retail | 2026 |
| Proclean MGT Limited | Administrative & support | 2025 |
| Procrew Solutions Ltd | Administrative & support | 2026 |
| Proctor Plumbing and Heating Ltd | Construction | 2021 |
| Proctor Solutions Limited | Health & social care | 2017 |
| Proculog Ltd | Professional & scientific | 2026 |
| Procure Partnerships Framework Limited | Professional & scientific | 2017 |
| Prodec Painters and Decorators Limited | Construction | 2003 |
| Prodex Group Ltd | Transport & logistics | 2025 |
| Prodigy Firms Limited | Wholesale & retail | 2020 |
| Prodigy Global Trade Ltd | Wholesale & retail | 2026 |
| Product and Research Limited | Professional & scientific | 2018 |
| Product Farm Company Limited | Professional & scientific | 2023 |
| Product Release Europe Limited | Manufacturing | 1995 |
| Productive Insights Ltd | Information & communication | 2020 |
| Proeducate Ltd | Education | 2026 |
| Profab NW Limited | Manufacturing | 2011 |
| Profascia Liverpool Ltd | Construction | 2026 |
| Professional Cleaning North West Ltd | Administrative & support | 2021 |
| Professional Eco Solutions Ltd | Administrative & support | 2025 |
| Professional Home Refurbishment Ltd | Construction | 2024 |
| Professional Knowledge Transfer Ltd | Professional & scientific | 2018 |
| Professional Liverpool Limited | Other services | 2011 |
| Professional Pristine Clean Limited | Other services | 2019 |
| Professional Tree Surgeons Ltd | Agriculture & fishing | 2011 |
| Professionaliverpool Limited | Other services | 2007 |
| Profici (NW) Ltd | Professional & scientific | 2013 |
| Profici Group Limited | Professional & scientific | 2026 |
| Proficient Care Ltd | Health & social care | 2022 |
| Proficient Clean Limited | Administrative & support | 2025 |
| Proficio Education Limited | Education | 2014 |
| Profile 25 Limited | Real estate | 2013 |
| Profile Data Services Ltd | Information & communication | 2017 |
| Profile Design LLP | | 2006 |
| Profile Education Holding Company Limited | Financial services | 2008 |
| Profile Education Limited | Administrative & support | 2007 |
| Profile Education Property Company Limited | Administrative & support | 2024 |
| Profile Group (Trustee) Limited | Administrative & support | 2024 |
| Profile Roofing Specialists Ltd | Construction | 2014 |
| Profit Development Ltd | Information & communication | 2023 |
| Profit First Hospitality Ltd | Professional & scientific | 2025 |
| Profix Appliances Ltd | Other services | 2025 |
| Profix Roofing Systems Limited | Manufacturing | 1990 |
| Proflex Transport Ltd | Transport & logistics | 2025 |
| Profresh Cleaning Ltd | Administrative & support | 2026 |
| Progases (UK) Holdings Limited | Financial services | 2024 |
| Progases (UK) Limited | Energy | 2014 |
| Progases DRY Ice Co Ltd | Real estate | 2026 |
| Progemini Limited | Education | 2019 |
| Progress Inc CIC | Information & communication | 2024 |
| Progress Lives Limited | Health & social care | 2025 |
| Progress Media Limited | Information & communication | 2024 |
| Progress Pathways Care Ltd | Health & social care | 2026 |
| Progress Pictures Ltd | Information & communication | 2023 |
| Progress Site Engineering Ltd | Administrative & support | 2016 |
| Progression Fitness & Training CIC | Education | 2025 |
| Progression PT Ltd | Health & social care | 2019 |
| Progressive Cycles Ltd | Manufacturing | 2024 |
| Progressive Futures Care Limited | Administrative & support | 2004 |
| Progressive Group International Ltd | Professional & scientific | 2019 |
| Progressive Group Services Ltd | Administrative & support | 2021 |
| Progressive Independence Limited | Public administration | 2023 |
| Progressive Lifestyle Solutions N/W C.I.C. | Hospitality | 2008 |
| Progressive Patterns Ltd | Professional & scientific | 2022 |
| Progressive Support Group Ltd | Health & social care | 2024 |
| Progrs Limited | Professional & scientific | 2020 |
| Proguard Security Group Ltd | Administrative & support | 2025 |
| Project Become Ltd | Other services | 2023 |
| Project Financials Consultancy Ltd | Administrative & support | 2023 |
| Project Four Building Safety Experts Limited | Professional & scientific | 2016 |
| Project Four MM 1 Limited | Professional & scientific | 2024 |
| Project Prodigy Ltd | Information & communication | 2023 |
| Project Roofing and Maintenance Ltd | Construction | 2026 |
| Project Twenty Bidco Limited | Financial services | 2024 |
| Project Twenty Topco Limited | Financial services | 2024 |
| Projectluna Limited | Professional & scientific | 2021 |
| Projector Studios Ltd | Information & communication | 2013 |
| Prolab Academy Ltd | Arts & recreation | 2025 |
| Prolec International Limited | Construction | 2018 |
| Prolift Access Hire Ltd | Administrative & support | 2021 |