| Prep Centre (SW) Ltd | Wholesale & retail | 2023 |
| Presbytery Mews Management Company Limited | Households | 2021 |
| Press-Release (Triple T Studio) Community Interest Company | Arts & recreation | 2025 |
| Pressure Force SW Ltd | Construction | 2026 |
| Pressure Pro SW Ltd | Administrative & support | 2024 |
| Prestige Carpentry Plymouth Ltd | Manufacturing | 2022 |
| Prestige Delta Maintenance Limited | Construction | 2018 |
| Prestige Elite Ltd | Transport & logistics | 2026 |
| Prestige Landscapes & Fencing Ltd | Construction | 2024 |
| Prestige Motion Ltd | Transport & logistics | 2026 |
| Prestige Parts Limited | Manufacturing | 2003 |
| Prestige Skip Hire Ltd | Water & waste | 2019 |
| Prestigious Magazine Limited | Information & communication | 2018 |
| Preston Consultancy Group Ltd | Other services | 2024 |
| Preventative Medical Services Limited | Health & social care | 2016 |
| Price Commercial Services Limited | Construction | 2020 |
| Priceplus Ltd | Wholesale & retail | 2024 |
| Pride Consulting IMS Limited | Professional & scientific | 2019 |
| Pride Group Holdings Limited | Financial services | 2022 |
| Pride in Plymouth CIC | Education | 2014 |
| Pride of Devon Bakeries Limited | Hospitality | 2026 |
| Pride of Plymouth Ltd | Hospitality | 2025 |
| Primarc Limited | Manufacturing | 1974 |
| Primary and Secondary Tutoring (SW) Ltd | Education | 2023 |
| Primary Asset Holdings Limited | Financial services | 2017 |
| Prime Curry Ltd | Manufacturing | 2017 |
| Prime GP Services Ltd | Health & social care | 2025 |
| Prime Pick Emporium Ltd | Wholesale & retail | 2023 |
| Prime Property Services Limited | Extraterritorial | 2019 |
| Prime Retail Limited | Wholesale & retail | 2010 |
| Prime Valeting Plymouth Ltd | Administrative & support | 2026 |
| Primeflex Ltd | Wholesale & retail | 2022 |
| Primeresi Limited | Extraterritorial | 2016 |
| Primet Limited | Professional & scientific | 2010 |
| Primrose & Heath Let's Ltd | Real estate | 2025 |
| Primus Passus Property Management Limited | Real estate | 2021 |
| Princess Yachts (Holdings) Limited | Extraterritorial | 2007 |
| Princess Yachts Limited | Manufacturing | 1965 |
| Print Cornwall Limited | Manufacturing | 2021 |
| PRINT4GOOD Community Interest Company | Wholesale & retail | 2020 |
| Printon New Homes Limited | Construction | 2004 |
| Prinz Property Limited | Real estate | 2021 |
| Prioritise PMU Ltd | Professional & scientific | 2024 |
| Priory Close Management Company Limited | Households | 1986 |
| Priory Court (Tonbridge) Limited | Households | 2007 |
| Priory Interiors (SW) Ltd | Construction | 2008 |
| Pristine&Pure Cleaning Service Limited | Administrative & support | 2025 |
| Prithvi Software Solutions Limited | Information & communication | 2024 |
| Private Landlords Limited | Information & communication | 2021 |
| Prive Advanced Facial Aesthetics Limited | Health & social care | 2022 |
| Prnc DEE Entertainment Ltd | Information & communication | 2026 |
| Pro Build Industrial Structures Ltd | Construction | 2024 |
| Pro DEC MK Ltd | Construction | 2019 |
| Pro Fit Studio Solutions Limited | Financial services | 2025 |
| Pro Heating and Plumbing Solutions Ltd | Construction | 2022 |
| Pro Line Groundworks and Civil Engineering Limited | Construction | 2015 |
| Pro Lining Ltd | Construction | 2017 |
| Pro Marine 1 Ltd | Agriculture & fishing | 2025 |
| Pro Marine Ltd | Agriculture & fishing | 2025 |
| Pro-Fit Contractors Ltd | Energy | 2015 |
| Pro-Spective Ltd | Professional & scientific | 2025 |
| Pro-Story Photography Limited | Professional & scientific | 2006 |
| Proactive Sports Coaching, Health and Education CIC | Education | 2019 |
| Probal Ltd | Financial services | 2023 |
| Probal.Global Ltd | Professional & scientific | 2024 |
| Probuild Construction Solutions Ltd. | Construction | 2019 |
| Probuild Southwest Ltd | Construction | 2026 |
| Process Automation Support Limited | Professional & scientific | 2013 |
| Process PE Ltd | Education | 2024 |
| Proconnect Allied Limited | Other services | 2026 |
| Proconvey Limited | Information & communication | 2022 |
| Professional Animated Learning Limited | Education | 2020 |
| Professional Transport Services - PTS Ltd | Transport & logistics | 2019 |
| Proficitas Ltd | Wholesale & retail | 2025 |
| Progress IT Global Limited | Information & communication | 2014 |
| Project 401 Holdings Limited | Financial services | 2024 |
| Project 401 Limited | Manufacturing | 2024 |
| Project Kairos Ltd | Extraterritorial | 2025 |
| Project Management Solutions International Ltd | Construction | 2023 |
| Project Plan B Holding Limited | Financial services | 2020 |
| Project Plan B Limited | Wholesale & retail | 2020 |
| Project Quality Partners Ltd | Professional & scientific | 2024 |
| Project Sloth Ltd | Wholesale & retail | 2025 |
| Project Stainless Limited | Construction | 2013 |
| Projects (South West) Limited | Real estate | 2016 |
| Projects Studios Ltd | Arts & recreation | 2023 |
| Projex South West Limited | Construction | 2012 |
| Proline Driveways Ltd Ltd | Construction | 2025 |
| Promare UK C.I.C. | Professional & scientific | 2020 |
| Promax Design Limited | Construction | 2017 |
| Prometheus Energy Consulting Limited | Professional & scientific | 2025 |
| Promoting Children in Plymouth | Other services | 1999 |
| Propel Business Consultancy Limited | Professional & scientific | 2025 |
| Proper Pasties & Stuff Ltd | Manufacturing | 2020 |
| Property Care Chain Ltd | Real estate | 2022 |
| Property Keyper Ltd | Real estate | 2024 |
| Property Management ACS Ltd | Households | 2024 |
| Property North.Co (North East) Limited | Real estate | 2000 |
| Property PA Ltd | Administrative & support | 2010 |
| Property Parts Ltd | Wholesale & retail | 2024 |