| Penningtons (Falmouth) Ltd | Wholesale & retail | 2006 |
| Pennywort Properties Limited | Hospitality | 2006 |
| Penrose Sailmakers Limited | Manufacturing | 2009 |
| Penryn Management Company Limited | Hospitality | 1990 |
| Penryn Plastics Limited | Wholesale & retail | 2007 |
| Penryn Spirits Limited | Wholesale & retail | 2018 |
| Pensionable.Ai Ltd | Information & communication | 2025 |
| Penwarne Digital Assets Ltd | Professional & scientific | 2025 |
| Penwarne Landscaping Ltd | Administrative & support | 2023 |
| Penwarne Limited | Real estate | 2023 |
| Penwerris Old School Management Company Ltd | Real estate | 2015 |
| Penzance Food Festival Ltd | Hospitality | 2024 |
| Penzance Smiles Ltd | Health & social care | 2026 |
| Perfect Properties Cornwall Ltd | Real estate | 2017 |
| Perran Rock Limited | Real estate | 2025 |
| Perran Signs and Graphics Ltd | Manufacturing | 2013 |
| Perranmore Ltd | Professional & scientific | 2019 |
| Peter Scarlett Limited | Extraterritorial | 2025 |
| Peter Skewes Building Ltd | Construction | 2020 |
| Peter Squire Limited | Wholesale & retail | 2007 |
| Peter Tully Ltd | Wholesale & retail | 2015 |
| Peters Bros Limited | Construction | 2018 |
| Pets YOU Have Limited | Wholesale & retail | 2013 |
| Pheonix Lettings Ltd | Real estate | 2023 |
| Phgather Ltd | Professional & scientific | 2023 |
| Phoenix Waste UK Ltd | Water & waste | 2017 |
| Phyton Limited | Financial services | 2013 |
| Picklepete Ltd | Information & communication | 2012 |
| PIE in the Sky Kernow Ltd | Hospitality | 2026 |
| PIG STY Gym LLP | | 2024 |
| Pigpen Radio Community Interest Company | Information & communication | 2015 |
| Pilgrim Press Limited | Professional & scientific | 1934 |
| Pillowpress Laundry Ltd | Administrative & support | 2025 |
| Pink Moon Creative Ltd | Information & communication | 2023 |
| Pips Pasty Shop Limited | Wholesale & retail | 2024 |
| Piran Mining UK Limited | Mining & quarrying | 2017 |
| Piran Technologies Limited | Information & communication | 2004 |
| PJM Management Services Limited | Professional & scientific | 2022 |
| Placemaking Partners Ltd | Construction | 2025 |
| Planteduk Ltd | Hospitality | 2021 |
| Platform Creative Studio Limited | Manufacturing | 1999 |
| Platinum Marketing & Consultancy Ltd | Information & communication | 2017 |
| Playful Energy Ltd | Education | 2023 |
| Plymouth Vans Ltd | Hospitality | 2018 |
| PMD Offshore Ltd | Administrative & support | 2021 |
| PMW Consulting Limited | Information & communication | 2013 |
| Poachers Corner Management Limited | Households | 2022 |
| Pogofandango Ltd | Arts & recreation | 2012 |
| Polventon Maritime Advisory Ltd | Professional & scientific | 2026 |
| Polypers Corporation Ltd | Manufacturing | 2023 |
| Polzeath Associates Ltd | Households | 2019 |
| Pomed Ltd | Professional & scientific | 2025 |
| Pomodoro Falmouth Ltd | Hospitality | 2021 |
| Ponjeravah Limited | Construction | 2023 |
| Ponsharden Lodge Management Company (Falmouth) Limited | Households | 1994 |
| Ponsharden Property Holdings Limited | Real estate | 1963 |
| Porthallow (Tresooth) Ltd | Real estate | 2024 |
| Porthallow Ltd | Hospitality | 2025 |
| Porthgwel (Falmouth) Management Company Limited | Households | 2013 |
| Portlemouth Estates Limited | Construction | 1971 |
| Potager Community Garden CIC | Arts & recreation | 2023 |
| Potager Garden Cafe Ltd | Hospitality | 2017 |
| Potager Garden Limited | Agriculture & fishing | 2008 |
| Powell’S Plaice Limited | Hospitality | 2026 |
| Precise Minds Limited | Information & communication | 2003 |
| Prenn Limited | Professional & scientific | 2016 |
| Prinforge Limited | Arts & recreation | 1977 |
| Pro Build Composites Limited | Manufacturing | 2016 |
| Probuild Falmouth Limited | Construction | 2017 |
| Professional & Executive Consultancy Services Limited | | 1988 |
| Profibre Limited | Construction | 2007 |
| Property Solutions South West Ltd | Construction | 2019 |
| Prosoft Cornwall Ltd | Information & communication | 2020 |
| PS BIM Consultancy and Engineering Solutions Ltd | Professional & scientific | 2023 |
| PT Marine & General Fabrication Limited | Professional & scientific | 2012 |
| Puffin House Property Management Ltd | Households | 2018 |
| Pump House Developments Limited | Construction | 2018 |
| Pump House Holdings Limited | Households | 2018 |
| Pups and Paws Prevention C.I.C. | Manufacturing | 2024 |
| Pure Social Media Ltd | Professional & scientific | 2020 |
| Pure Yoga and Wellbeing Ltd | Education | 2025 |
| PW Imports Ltd | Wholesale & retail | 2025 |
| Pysk Ltd | Manufacturing | 2020 |
| QC Inspections Limited | Professional & scientific | 2022 |
| QP Nova Limited | Financial services | 2020 |
| Qualityworks Engineering Ltd | Professional & scientific | 2024 |
| Quant Investments Ltd | Real estate | 2021 |
| Quantum Marine Marketing Ltd | Professional & scientific | 2008 |
| R & J Kessell Ltd | Agriculture & fishing | 2005 |
| R and D Leighfield Limited | Professional & scientific | 2019 |
| R C Mobile Limited | Wholesale & retail | 2009 |
| R C Mobile PAR Ltd | Wholesale & retail | 2024 |
| R D Gregory Ltd | Construction | 2006 |
| R Jones Construction Ltd | Construction | 2020 |
| R Kessell Maintenance Ltd | Administrative & support | 2025 |
| R.T Cornwall Construction Ltd | Construction | 2025 |
| RA & Olly Limited | Wholesale & retail | 1996 |
| Rabia & Brothers Limited | Other services | 2024 |
| Radiance Therapeutics Ltd | Professional & scientific | 2019 |
| Radiant Marine Ltd | Manufacturing | 2021 |