| Philip Whear Windows & Conservatories Ltd | Construction | 2002 |
| Phoenix Electrical Solutions Ltd | Manufacturing | 2025 |
| Phoenix Events & Bars Ltd | Administrative & support | 2025 |
| Phoenix Health Care Services Limited | Health & social care | 2005 |
| Phoenix House Penzance Management Limited | Households | 2005 |
| Phoneta Business Limited | Information & communication | 2017 |
| Phoneta Limited | Information & communication | 2017 |
| Phoneta Marketing Limited | Information & communication | 2017 |
| Picahome Limited | Households | 1985 |
| Pictures and Things Gallery Ltd | Wholesale & retail | 2015 |
| Pieron Mcgreagors Ltd | Wholesale & retail | 2026 |
| Pilcrow Advisory Limited | Professional & scientific | 2022 |
| Piran Estates Limited | Construction | 2015 |
| Piran Inns Ltd | Hospitality | 2019 |
| Piran Kerth Limited | Financial services | 2021 |
| Piran Surveys Ltd | Professional & scientific | 2023 |
| Plantar Physio Ltd | Wholesale & retail | 2020 |
| Platts JAY Limited | Hospitality | 2025 |
| PLB Haulage Limited | Transport & logistics | 2024 |
| PLB Horseboxes Limited | Manufacturing | 2019 |
| Plen an Varghas Management Company Limited | Households | 2008 |
| Plumbtastic (Cornwall) Limited | Construction | 2010 |
| PM Classic Cars Limited | Wholesale & retail | 2026 |
| Poldice Valley Equestrian Limited | Other services | 2018 |
| Ponsandane Leisure Limited | Hospitality | 2022 |
| Poplars Solar Energy C.I.C. | Energy | 2015 |
| Portioli (UK) Limited | Wholesale & retail | 2007 |
| Portishead Plumbing and Heating Ltd | Construction | 2023 |
| Portreath Association Limited(The) | Transport & logistics | 1963 |
| Portreath Bakery 1988 Limited | Wholesale & retail | 2024 |
| Portreath Property Ltd | Construction | 2024 |
| Praa Cove Management Company Limited | Households | 2021 |
| Practical Developments (South West) Limited | Manufacturing | 1986 |
| Pradacrux Ltd | Hospitality | 2024 |
| Praestantia Technology Limited | Information & communication | 2018 |
| Precision Audio Products Limited | Water & waste | 2001 |
| Preconstruction Management Limited | Construction | 2020 |
| Preferred Trading Limited | Wholesale & retail | 2024 |
| Preloved Hot Tubs Cornwall Limited | Wholesale & retail | 2025 |
| Premier Contractors (Nationwide) Limited | Construction | 2024 |
| Premier Holdings (Nationwide) Limited | Real estate | 2026 |
| Premier Holdings (South West) Limited | Real estate | 2024 |
| Premier Properties (Nationwide) Limited | Real estate | 2026 |
| Premier Signs (SW) Limited | Manufacturing | 2003 |
| Premier Water Solutions 10 Ltd | Water & waste | 2018 |
| Pressure Services Limited | Manufacturing | 2026 |
| Prestige Cornwall Limited | Construction | 2019 |
| Prima Bakeries Limited | Manufacturing | 2010 |
| Prima Trustees Limited | Professional & scientific | 2023 |
| Principal Leisure and Entertainments Limited | Arts & recreation | 1987 |
| Printer Cartridge Supplies Ltd | Information & communication | 2009 |
| PRLMC2 Limited | Households | 2017 |
| Professional Training & Assessment Services Limited | Education | 2009 |
| Project Tethys Limited | Information & communication | 2008 |
| Property Care Builders Limited | Construction | 2005 |
| Property to (SW) Limited | Real estate | 2025 |
| Propest Solutions Ltd | Agriculture & fishing | 2017 |
| PUMP4YOU Concrete Ltd | Extraterritorial | 2021 |
| Pure Financial Solutions Ltd | Financial services | 2000 |
| Pvsm Ltd | Extraterritorial | 2023 |
| Pvwh Limited | Households | 2017 |
| Pyrocheck Ltd | Construction | 2019 |
| Quaife.Net Limited | Financial services | 2016 |
| Quan Chef Limited | Hospitality | 2023 |
| Quarry Court, Management 2020 Ltd | Real estate | 2020 |
| Quarry Gardens Residents Association Limited | Households | 1980 |
| Quest Fuel Services Ltd | Wholesale & retail | 2016 |
| Quiet Connections CIC | Health & social care | 2017 |
| Quillet Construction Limited | Construction | 2022 |
| Quillet Properties Holdings Limited | Financial services | 2024 |
| Quillet Properties Limited | Real estate | 2024 |
| R & B Developments (Cornwall) Limited | Construction | 2019 |
| R Civils & Surfacing Ltd | Construction | 2026 |
| R P Stevens Electrical Ltd | Manufacturing | 2022 |
| R&J Land Services Ltd | Agriculture & fishing | 2021 |
| R&M Cleaners Ltd | Health & social care | 2024 |
| R.M. Developments Limited | Construction | 2000 |
| R.R. Transport Limited | Transport & logistics | 1991 |
| Rainbow Support Limited | Health & social care | 2019 |
| Rayworth Court Management Company Limited | Households | 2009 |
| Rccg Testimony House Limited | Other services | 2024 |
| RD Sports Limited | Wholesale & retail | 2024 |
| Real Estates (Cornwall) Limited | Real estate | 2007 |
| REC (SW) Ltd | Construction | 2018 |
| Red Brick Cycles Ltd | Wholesale & retail | 2025 |
| Red Planning Ltd | Professional & scientific | 2018 |
| Red Robin Designs Ltd | Arts & recreation | 2023 |
| Reddy Fire & Security Ltd | Public administration | 2025 |
| Redhotfox Limited | Information & communication | 2020 |
| Redruth Former Library CIC | Arts & recreation | 2021 |
| Redruth Gateway Management Company Limited | Extraterritorial | 2011 |
| Redruth GQ Limited | Hospitality | 2025 |
| Redruth Grill Ltd | Hospitality | 2019 |
| Redruth Hand Car Wash Quality Limited | Administrative & support | 2024 |
| Redruth Highway Community Project CIC | Arts & recreation | 2017 |
| Redruth MOT Centre Ltd | Wholesale & retail | 2019 |
| Redruth North Partnership | Health & social care | 2006 |
| Redruth Nurseries Limited | Education | 2023 |
| Redruth Radio CIC | Information & communication | 2024 |
| Redruth Revival Community Interest Company | Real estate | 2014 |