| Priston Mill Limited | Administrative & support | 2003 |
| Pritchard Street Offices Ltd | Real estate | 2023 |
| Prith Voual Consulting Ltd | Professional & scientific | 2015 |
| Prithvi Data Solutions Limited | Information & communication | 2012 |
| Prity Data OWL Ltd | Other services | 2025 |
| Private Client Network Limited | Other services | 2016 |
| Private Funding & Securities Limited | Financial services | 1990 |
| Private I Hair Culture Limited | Other services | 2023 |
| Private Practice Management Limited | Administrative & support | 2007 |
| Private Secretary Group Ltd | Administrative & support | 2018 |
| Privatetrend Property Management Limited | Households | 1992 |
| Privett Developments Limited | Construction | 1988 |
| Privo Chauffeurs Ltd | Transport & logistics | 2025 |
| Prize Handling Ltd | Administrative & support | 2017 |
| PRL 29 Ltd | Hospitality | 2025 |
| Pro Aerotech Limited | Manufacturing | 2015 |
| Pro Athletes Coaching Ltd | Arts & recreation | 2024 |
| Pro Auction Holdings Limited | Financial services | 2013 |
| Pro Auction Ltd | Other services | 2004 |
| Pro Bodyworx Ltd | Wholesale & retail | 2024 |
| Pro Clinics Bristol Limited | Other services | 2019 |
| Pro Concrete Contracting Ltd | Construction | 2025 |
| Pro Corporate Limited | Information & communication | 1995 |
| Pro CUT Barber Shop Limited | Other services | 2007 |
| Pro EAR Clinic Ltd | Information & communication | 2025 |
| Pro Electrical Services (SW) Ltd | Construction | 2018 |
| Pro Fit Construction Ltd | Construction | 2024 |
| Pro GAS Bristol Ltd | Construction | 2021 |
| Pro Keyz Ltd | Real estate | 2024 |
| Pro Law International Ltd | Professional & scientific | 2025 |
| Pro Maintenance (South) Ltd | Administrative & support | 2011 |
| Pro Market Ltd | Hospitality | 2026 |
| Pro Properties Bristol Ltd | Real estate | 2024 |
| Pro Punch Services Ltd | Professional & scientific | 2021 |
| Pro Renewable Heating Ltd | Construction | 2022 |
| Pro Roofing Bristol Ltd | Construction | 2025 |
| Pro Shine Detailing Bristol Ltd | Wholesale & retail | 2025 |
| Pro Spray Plastering Ltd | Construction | 2026 |
| Pro Stone Building Services Ltd | Construction | 2015 |
| Pro Structures Limited | Construction | 2007 |
| Pro Vision Mortgage Solutions Limited | Financial services | 2024 |
| Pro-Cast Group Limited | Manufacturing | 2008 |
| Pro-Elite Sports Management Limited | Administrative & support | 2012 |
| Pro-Ferrum Limited | Professional & scientific | 2016 |
| Pro-Fit TOW Bars Limited | Wholesale & retail | 2005 |
| Pro-Heating Services Limited | Construction | 2004 |
| Pro-Motion Beds Ltd | Wholesale & retail | 2024 |
| Pro-Secs Limited | Administrative & support | 2015 |
| Pro-Tech Electrical (Bristol) Limited | Construction | 2006 |
| Pro-Tech Vehicle Maintenance Limited | Wholesale & retail | 2009 |
| Pro-Tidy (Bristol) Limited | Administrative & support | 2011 |
| Pro-Vets Group Limited | Extraterritorial | 2015 |
| Pro-Wired Limited | Construction | 2006 |
| Proactiv Maintenance Limited | Administrative & support | 2020 |
| Proactive Security Bristol Ltd | Administrative & support | 2024 |
| Proarb Tree Services Ltd | Extraterritorial | 2018 |
| Probate Tech Ltd | Information & communication | 2020 |
| Probert Industries Ltd | Professional & scientific | 2013 |
| Probras Ltd | Other services | 2021 |
| Procare (Ujima) Limited | Other services | 2022 |
| Procare Property Management Limited | Construction | 2023 |
| Procentia Limited | Information & communication | 2001 |
| Process & Progress Ltd | Professional & scientific | 2022 |
| Process Digital UK Limited | Arts & recreation | 2018 |
| Process Geosolutions Limited | Professional & scientific | 2024 |
| Proclose Ltd | Professional & scientific | 2022 |
| Proctor and Stevenson Group Limited | Financial services | 2023 |
| Proctor and Stevenson Limited | Information & communication | 1991 |
| Proctor Residential Care Home Ltd | Health & social care | 2003 |
| Proctory Ltd | Real estate | 2025 |
| Procurator Limited | Wholesale & retail | 2023 |
| Procure Ally AI Ltd. | Information & communication | 2024 |
| Procurement & Contract Management Group Ltd | Professional & scientific | 2023 |
| Prodata Solutions Ltd | Information & communication | 2025 |
| Prodeck-Fixing (UK) Limited | Extraterritorial | 2011 |
| Prodeck-Fixing Limited | Construction | 2003 |
| Prodog Nutrition Limited | Manufacturing | 2016 |
| Prodog RAW Limited | Manufacturing | 2016 |
| Prodtex Limited | Professional & scientific | 2014 |
| Product Mole Ltd | Information & communication | 2021 |
| Product Quest Ltd | Information & communication | 2023 |
| Product Strategies International Limited | Administrative & support | 2001 |
| Product Studio Ltd | Information & communication | 2019 |
| Product Thinking Ltd | Information & communication | 2023 |
| Production House Limited | Arts & recreation | 2022 |
| Production Logistics Limited | Administrative & support | 2016 |
| Production Pattern (Bristol) Limited | Manufacturing | 1992 |
| Production People (UK) Limited | Professional & scientific | 2009 |
| Production Post Limited | Professional & scientific | 2008 |
| Production Space Limited | Real estate | 2019 |
| Products International Ltd | Wholesale & retail | 2018 |
| Proevo Solutions Ltd | Construction | 2025 |
| Profab Windows (SW) Ltd | Manufacturing | 2008 |
| Professional Apprenticeships Ltd | Administrative & support | 2016 |
| Professional Art Services Limited | Administrative & support | 2020 |
| Professional Construction Risks Limited | Financial services | 2014 |
| Professional Courier Company Limited | Transport & logistics | 2020 |
| Professional Footcare Limited | Health & social care | 2017 |
| Professional Hygiene Limited | Water & waste | 2006 |
| Professional Indemnity Insurance Brokers Ltd | Financial services | 2010 |