| Pioneer Line Haulage Limited | Transport & logistics | 2025 |
| Pioneer Vehicle Solutions Ltd | Wholesale & retail | 2021 |
| Pipes on Sight Limited | Professional & scientific | 2004 |
| Piri Piri Corner Limited | Hospitality | 2011 |
| PIS Trans&Logistics Ltd | Transport & logistics | 2024 |
| Pitt Properties Ltd | Real estate | 2017 |
| Pivaz 04 Ltd | Hospitality | 2026 |
| Pixie Treasure Chest Ltd | Wholesale & retail | 2016 |
| Pixl AI Limited | Arts & recreation | 2024 |
| PJ Mortgage Services Ltd | Financial services | 2024 |
| PJD Somerset Limited | Transport & logistics | 2010 |
| PJS Properties & Maintenance Ltd | Real estate | 2020 |
| Pjstructures Limited | Construction | 2011 |
| Plan C Training Ltd | Education | 2024 |
| Planet Party Limited | Wholesale & retail | 2015 |
| Plantex Ltd | Manufacturing | 2024 |
| Plantforce South West Ltd | Administrative & support | 2008 |
| Plas Newydd (Weston Super Mare) Management Company Limited | Households | 1997 |
| Platinum Petcare Ltd | Other services | 2010 |
| Platinum Plastering Ltd | Construction | 2024 |
| Play Dayz for Woofs Limited | Hospitality | 2017 |
| Playaway Day Nursery (UK) Limited | Health & social care | 2011 |
| Plots and Plans Ltd | Professional & scientific | 2020 |
| Plumb Repair Ltd | Construction | 2014 |
| Plumestic Ltd | Construction | 2024 |
| Plussol Ltd | Construction | 2019 |
| Plymouth RK Ltd | Wholesale & retail | 2019 |
| Pmbx Ltd | Agriculture & fishing | 2022 |
| PMC Mortgage Solutions Ltd | Financial services | 2017 |
| PN5 Communications Ltd | Information & communication | 2009 |
| Pnsm Investments Ltd | Wholesale & retail | 2024 |
| PNT Electrical Limited | Construction | 2002 |
| Pods Construction Ltd | Construction | 2019 |
| Poets Corner (Flat Management) Limited | Households | 2003 |
| Point Five Logistics Ltd | Transport & logistics | 2014 |
| Pokenade Ltd | Wholesale & retail | 2024 |
| Pollock Records Limited | Information & communication | 2021 |
| Pollyanna Wilkinson Garden Design Ltd | Professional & scientific | 2020 |
| Polo BOY Promotions Limited | Hospitality | 2017 |
| POP UP Pizza Project CIC | Hospitality | 2024 |
| Poppy Transport Solutions Ltd | Administrative & support | 2024 |
| Popscafe Ltd | Hospitality | 2026 |
| Portal Medical Services Ltd | Health & social care | 2025 |
| Porter Plumbing, Heating & Renewables Limited | Construction | 2013 |
| Portishead Beauty (Salon) Ltd | Other services | 2018 |
| Portishead Lodge Management Limited | Households | 1982 |
| Portland House Burnham-On-Sea Residents Association Limited | Households | 1980 |
| Poseidon Fitness Ltd | Arts & recreation | 2020 |
| Powell Data Solutions Ltd | Construction | 2023 |
| Powellslaw LLP | | 2024 |
| Power World Solutions Limited | Transport & logistics | 2013 |
| Powerflush Somerset Ltd | Other services | 2017 |
| PQB Ltd | Wholesale & retail | 2010 |
| PR & PM Collins Property Management Ltd | Real estate | 2015 |
| Prata Investments Ltd | Households | 2024 |
| Prdarts Limited | Arts & recreation | 2026 |
| Precise Heating Limited | Construction | 2016 |
| Premier Paving South West Ltd | Construction | 2015 |
| Premitec (Holdings) Ltd | Administrative & support | 2017 |
| Premitec (UK) Limited | Manufacturing | 2014 |
| Premium Hobbies Limited | Wholesale & retail | 2018 |
| Premium Passenger Assistants Limited | Education | 2026 |
| Preni Valeting Ltd | Administrative & support | 2022 |
| Prepared Media Limited | Manufacturing | 2012 |
| Preps Shoots and Leaves Ltd | Administrative & support | 2023 |
| Prestige Accountancy SW Limited | Professional & scientific | 2024 |
| Prestige Automotive (SW) Ltd | Administrative & support | 2011 |
| Prestige Building Specialists Ltd | Construction | 2020 |
| Prestige International Cars Ltd | Wholesale & retail | 2024 |
| Pretty Design & Build Ltd | Construction | 2020 |
| Prim Trans Ltd | Transport & logistics | 2021 |
| Prime Atlantic Health Limited | Health & social care | 2018 |
| Prime Candidate (Social Enterprise) Limited | Administrative & support | 2015 |
| Prime Wood Interiors Ltd | Manufacturing | 2026 |
| Primepath Services Limited | Administrative & support | 2025 |
| Primetrading Europe Ltd | Extraterritorial | 2016 |
| Primetrading Investments Limited | Extraterritorial | 2011 |
| Primis Industrial Automation Limited | Professional & scientific | 2020 |
| Primrose Home Help Ltd | Other services | 2018 |
| Princes Road (Clevedon) Management Company Limited | Households | 2021 |
| Principal Electrical Ltd | Administrative & support | 2016 |
| Pring Heating Ltd | Construction | 2018 |
| Print & Procurement Limited | Information & communication | 2007 |
| Print DEN Ltd | Manufacturing | 2025 |
| Print [Works] Weston C.I.C. | Education | 2021 |
| Priority Health Ltd | Extraterritorial | 2015 |
| Pristina Facilities Management Limited | Administrative & support | 2024 |
| Pristine Paint Solutions UK Ltd. | Wholesale & retail | 2019 |
| Pristine Property Services North Somerset Ltd | Administrative & support | 2017 |
| Pristine Transport Solutions Ltd | Manufacturing | 2025 |
| Pro Electro Limited | Construction | 2012 |
| Pro Site (SW) Ltd. | Construction | 2016 |
| Pro V Manco Limited | Households | 2024 |
| Procyon Project Management Ltd | Professional & scientific | 2008 |
| Professional Flying Limited | Administrative & support | 2012 |
| Professional Passive Fire Protection Ltd | Construction | 2019 |
| Profit & Purpose Ltd | Professional & scientific | 2025 |
| Proflow UFH Ltd | Construction | 2026 |
| Progress Personnel Limited | Administrative & support | 2007 |
| Project Phoenix Properties Limited | Real estate | 2013 |