| Privilege Services Group Ltd | Other services | 2022 |
| Pro Barbers Yaxley Ltd | Other services | 2024 |
| Pro BS Limited | Professional & scientific | 2019 |
| Pro Business Solutions Limited | Professional & scientific | 2010 |
| Pro Car Sales Ltd | Wholesale & retail | 2025 |
| Pro Composite Ltd | Manufacturing | 2025 |
| Pro Express Ltd | Transport & logistics | 2015 |
| Pro GAS Heating Limited | Construction | 2016 |
| Pro Hand Car Wash Peterborough Ltd | Administrative & support | 2023 |
| Pro HGV Solutions Ltd | Administrative & support | 2025 |
| Pro Mechanix Ltd | Wholesale & retail | 2025 |
| Pro Mile Ltd | Transport & logistics | 2015 |
| Pro Power MX Ltd | Wholesale & retail | 2024 |
| Pro Resin Surfacing Limited | Construction | 2017 |
| Pro System Solutions Limited | Information & communication | 2026 |
| Pro TEK Interiors Limited | Construction | 2013 |
| Pro Visionx Group Ltd | Professional & scientific | 2025 |
| Pro-Active Marketing Group Limited | Professional & scientific | 2026 |
| Pro-Bake Limited | Wholesale & retail | 2000 |
| Pro-Carbon Racing Ltd | Manufacturing | 2003 |
| Pro-Eng Ltd | Professional & scientific | 2021 |
| Pro-Parts (Peterborough) Limited | Wholesale & retail | 2004 |
| Pro-Petro Limited | Wholesale & retail | 2012 |
| Pro-Plumb (Cambs) Ltd | Construction | 2005 |
| Pro-Power Engineering Ltd | Wholesale & retail | 2017 |
| Pro-Purus Limited | Wholesale & retail | 2015 |
| Proactive CMS Limited | Construction | 2015 |
| Proamica Ltd | Extraterritorial | 2024 |
| Proamica Trustees Ltd | Extraterritorial | 2024 |
| Probiopulse Ltd | Wholesale & retail | 2025 |
| Procare Landscape Services Ltd | Administrative & support | 2026 |
| Process & Power Engineering Ltd | Professional & scientific | 2025 |
| Process Automation UK Limited | Professional & scientific | 2020 |
| Process Installations & Maintenance Services Limited | Construction | 2006 |
| Processors & Growers Research Organisation | Professional & scientific | 1956 |
| Procoat (UK) Limited | Construction | 1989 |
| Procomercial Ltd | Wholesale & retail | 2024 |
| Procuratio Ltd | Construction | 2025 |
| Prodark Design Limited | Information & communication | 2021 |
| Prodec Builders Limited | Administrative & support | 2006 |
| Prodera Consulting Limited | Information & communication | 2015 |
| Prodera Group Limited | Information & communication | 2008 |
| Prodera Technology Limited | Information & communication | 2015 |
| Prodigal Connect Limited | Other services | 2021 |
| Prodis Developments Ltd | Real estate | 2017 |
| Product Integrity Ltd | Professional & scientific | 2025 |
| Product Support Partnership Limited | Administrative & support | 2007 |
| PRODUCTION360MEDIA Ltd | Information & communication | 2020 |
| Productive Learning UK Ltd | Education | 2023 |
| Products at Your Service Ltd | Wholesale & retail | 2025 |
| Prof Travels Ltd | Administrative & support | 2024 |
| Profactor Consulting Ltd | Professional & scientific | 2021 |
| Professional Communications Solutions Ltd | Information & communication | 2015 |
| Professional Development and Training Ltd | Education | 2013 |
| Professional Ecommerce Solutions Ltd | Extraterritorial | 2015 |
| Professional Gloss Limited | Wholesale & retail | 2021 |
| Professor Mart Ltd | Wholesale & retail | 2025 |
| Profile Peterborough Ltd | Wholesale & retail | 2022 |
| Profitback Trading Limited | Wholesale & retail | 2024 |
| Proforce Security & Events Ltd | Administrative & support | 2018 |
| Profork Training Limited | Education | 2005 |
| Progress DCR Limited | Financial services | 2002 |
| Progressive Aspect Limited | Real estate | 2021 |
| Progressive Capital Ltd | Construction | 2025 |
| Progressive Lanning Priestgate Limited | Real estate | 2015 |
| Progressive Lets Limited | Real estate | 2010 |
| Progressive Property Assets Limited | Real estate | 2017 |
| Progressive Property Limited | Real estate | 2007 |
| Progressive Property Network Limited | Real estate | 2013 |
| Progressive Property Ventures LLP | | 2011 |
| Progressive Trading & Engineering Ltd | Wholesale & retail | 2023 |
| Project & Safety Services Limited | Administrative & support | 2017 |
| Project 20 Ltd | Real estate | 2019 |
| Project 24-7 Limited | Construction | 2025 |
| Project Anything LLP | | 2025 |
| Project Cinematic Limited | Arts & recreation | 2026 |
| Project Heaven Restoration Ltd | Manufacturing | 2021 |
| Project James Ltd | Construction | 2021 |
| Projectiva Ltd | Information & communication | 2019 |
| Projectway Ltd | Construction | 2026 |
| Projekt Rising Ltd | Information & communication | 2017 |
| Prologik Automation Ltd | Information & communication | 2016 |
| Promax Property Ltd | Real estate | 2019 |
| Prometheus Fire Safety Solutions Limited | Public administration | 2019 |
| Prometheus Security Ltd | Administrative & support | 2025 |
| Promise Dental Services Limited | Health & social care | 2015 |
| Promoters Express Ltd | Wholesale & retail | 2024 |
| Proper Hopper Ltd | Wholesale & retail | 2025 |
| Properties With Love Limited | Real estate | 2024 |
| Properties Wize Ltd | Real estate | 2024 |
| Property & Garden Services Ltd | Construction | 2004 |
| Property Buyers Alliance UK Ltd | Other services | 2026 |
| Property Centric Limited | Real estate | 2021 |
| Property Garden Services Limited | Administrative & support | 2023 |
| Property Ladder Solutions Limited | Real estate | 2016 |
| Property LET Peterborough Ltd | Households | 2026 |
| Property Mountain Ltd | Real estate | 2022 |
| Property NT Ltd | Professional & scientific | 2019 |
| Property Passport Services Ltd | Other services | 2017 |
| Property Rent Ltd | Real estate | 2021 |