| Portland House (Bristol) Management Company Limited | Real estate | 2014 |
| Portland Lofts Management Limited | Households | 2005 |
| Portland Mansions (Management Company) Limited | Real estate | 2003 |
| Portland Property Partnership Ltd | Real estate | 2022 |
| Portland Square Apartments Ltd | Real estate | 2025 |
| Portland Square Properties Limited | Arts & recreation | 2016 |
| Portland Therapy Centre Ltd | Health & social care | 2004 |
| Portland View (Bristol) Management Company Limited | Real estate | 2015 |
| Portman Financial People Limited | Administrative & support | 2022 |
| Portmead Homes Limited | Construction | 2003 |
| Portmeirion Planning Ltd | Professional & scientific | 2022 |
| Porto Marina Ltd | Hospitality | 2025 |
| Portobella Creative Ltd | Wholesale & retail | 2023 |
| Porton Properties Limited | Real estate | 2002 |
| Portoá Group Ltd | Wholesale & retail | 2022 |
| Portrait Lounge Ltd | Professional & scientific | 2026 |
| Portroe Properties Limited | Construction | 2001 |
| Portsdown Property Management Limited | Real estate | 2023 |
| Portugal Property Ltd | Real estate | 2009 |
| Portview House Management Company Ltd | Households | 2012 |
| Portway Signs LLP | | 2016 |
| Portway Sports Centre Limited | Arts & recreation | 2023 |
| Posh Nails Limited | Other services | 2022 |
| Poshpads Bristol Limited | Real estate | 2005 |
| Positeeth Group Limited | Financial services | 2025 |
| Positeeth Limited | Health & social care | 2020 |
| Positeethlabs Ltd | Health & social care | 2020 |
| Positive Behaviour Solutions Ltd | Education | 2012 |
| Positive Behaviour Team Ltd | Health & social care | 2012 |
| Positive Cycle (2021) Ltd | Hospitality | 2021 |
| Positive Cycle Ltd. | Hospitality | 2007 |
| Positive Drinks Co Ltd | Wholesale & retail | 2024 |
| Positive Fokus Limited | Administrative & support | 2004 |
| Positive Impact Bristol Ltd | Education | 2025 |
| Positive Impact Engineering Ltd | Professional & scientific | 2016 |
| Positive Minds Ltd | Extraterritorial | 2006 |
| Positive Parenting With Daisy Woods Limited | Information & communication | 2022 |
| Positive Products Ltd | Professional & scientific | 2023 |
| Positive Solutions (Bristol) Limited | Wholesale & retail | 1998 |
| Positive Solutions Property Limited | Real estate | 2016 |
| Posset Design Limited | Professional & scientific | 2020 |
| Posset Testing Ltd | Information & communication | 2023 |
| Possum Publishing Ltd | Information & communication | 2002 |
| Post Farm Property & Maintenance Services Ltd | Real estate | 2017 |
| Post Office Lane (Flax Bourton) Management Company Limited | Households | 1971 |
| Postance Engineering Limited | Administrative & support | 2008 |
| Postcom Ltd | Transport & logistics | 2011 |
| Postcomm Limited | Financial services | 2016 |
| Posto Limited | Information & communication | 2026 |
| Postscript 360 Limited | Health & social care | 1996 |
| POT Heads Pottery Ltd | Arts & recreation | 2022 |
| Potager Cafe Ltd | Hospitality | 2018 |
| Potato Ltd | Transport & logistics | 2018 |
| Potend Limited | | 1996 |
| Potentia Edge Ltd | Professional & scientific | 2024 |
| Potentia Electrical Ltd | Construction | 2017 |
| Potential Ventures Limited | Information & communication | 2013 |
| Potentiate Technologies Limited | Professional & scientific | 2019 |
| Potenza Powerlifting Ltd | Extraterritorial | 2023 |
| Potsentlisi Ltd | Hospitality | 2025 |
| Potters Reach (Leigh Sinton) Management Company Limited | Households | 2024 |
| Pouch Productions Ltd | Information & communication | 2021 |
| Poulsom+Herrera Studio Limited | Administrative & support | 2024 |
| Poulston Property Services Ltd | Hospitality | 2005 |
| Poulton Lodge Management Company Limited | Real estate | 2018 |
| Pound Lane Property Ltd | Real estate | 2026 |
| Pound Mead Management Limited | Professional & scientific | 2011 |
| Pound Place Kingswood Limited | Households | 2001 |
| Pounds Land Limited | Wholesale & retail | 2025 |
| Poundwise (SW) Limited | Wholesale & retail | 2008 |
| Pour Moore Drinks Ltd | Hospitality | 2022 |
| Pourch Ltd | Hospitality | 2024 |
| POW Group Limited | Professional & scientific | 2024 |
| POW Soundz Ltd | Arts & recreation | 2023 |
| Powair Ltd | Manufacturing | 2015 |
| Powair Systems Ltd | Professional & scientific | 2025 |
| Powderzone Ltd | Manufacturing | 2023 |
| Powell Court (Doynton) Management Limited | Households | 2005 |
| Powell Landscaping Ltd | Administrative & support | 2025 |
| Powell Office Equipment Limited | Wholesale & retail | 1989 |
| Powellchandler Ltd | Information & communication | 2015 |
| Powellco Property Group Ltd | Real estate | 2022 |
| Powells Property Group Ltd | Real estate | 2025 |
| Power and Control Engineering Services Limited | | 1980 |
| Power Doms Ltd | Information & communication | 2026 |
| Power Education Ltd | Education | 2023 |
| Power Electrics (Bristol) Limited | Professional & scientific | 1963 |
| Power Electrics (EOT Trustee) Limited | Administrative & support | 2024 |
| Power Electrics (Holdings) Limited | Administrative & support | 2021 |
| Power Eqip Ltd | Extraterritorial | 2015 |
| Power Event Consultants Ltd | Construction | 2025 |
| Power Fixings Ltd | Wholesale & retail | 2017 |
| Power Guard International (UK) Limited | Wholesale & retail | 2003 |
| Power Stone Investments Ltd. | Real estate | 2018 |
| Power Town CIC | Arts & recreation | 2021 |
| Power UK Holdings Ltd | Financial services | 2021 |
| Power UP Renovations Limited | Construction | 2024 |
| Power-A-Door Limited | Construction | 2004 |
| Power-Plus Solutions Limited | Construction | 2006 |
| Power-Sprays Limited | Manufacturing | 1962 |