| Phantom Arts Limited | Information & communication | 2021 |
| Pharos Commercial Limited | Administrative & support | 2026 |
| Philstan Limited | Agriculture & fishing | 2016 |
| Phoenix Commercial Cladding Limited | Construction | 2011 |
| Phoenix Gaming (Cornwall) Ltd | Arts & recreation | 2012 |
| Piazza Management Limited | Households | 2004 |
| Pied Piper Pest Control S.W. Limited | Other services | 2022 |
| Pitts Park Development Ltd | Construction | 2014 |
| PJR Payroll Consulting Ltd | Professional & scientific | 2026 |
| Platinum Cleaning Cornwall Ltd | Administrative & support | 2017 |
| Plym Developments Ltd | Construction | 2016 |
| Plymouth Company Ltd | Construction | 2023 |
| Plymouth Plumbers Ltd | Extraterritorial | 2025 |
| POL Community Care Ltd | Other services | 2014 |
| Polglase Property Limited | Real estate | 2004 |
| Pollard Architectural Ltd | Professional & scientific | 2008 |
| Polmartin Riding Limited | Arts & recreation | 2006 |
| Polventon Farm Limited | Agriculture & fishing | 2006 |
| Polwrath Close Management Company Limited | Households | 2021 |
| Polwrath Media Ltd | Professional & scientific | 2024 |
| Ponderarch Estates Ltd | Real estate | 2005 |
| Power Quip Limited | Wholesale & retail | 2003 |
| Premier Electrical Cornwall Limited | Construction | 2015 |
| Pretty FLY Club Nights Ltd | Arts & recreation | 2023 |
| Preventipest Limited | Administrative & support | 2026 |
| Prisks (Cornwall) Ltd | Real estate | 1971 |
| Prism Solutions Limited | Information & communication | 2011 |
| Professional Valeters & Detailers TA Ltd | Other services | 2019 |
| Project Design Consultancy (SW) Ltd | Professional & scientific | 2014 |
| Project XD Limited | Construction | 2025 |
| Property Maintenance Cornwall Limited | Construction | 2026 |
| Protego Support Services Limited | Construction | 2022 |
| PRS Floors Ltd | Construction | 2024 |
| Puckator Limited | Wholesale & retail | 1997 |
| Purely Cornish Property Limited | Real estate | 2022 |
| PV Cleave Limited | Energy | 2012 |
| PWD International Ltd | Transport & logistics | 2015 |
| Qsme Ltd | Wholesale & retail | 2022 |
| Quay Marine Engineering Ltd | Professional & scientific | 2023 |
| Quayside Apartments RTM Company Limited | Households | 2018 |
| Quda UK Ltd | Manufacturing | 2018 |
| Quiller Holdings Ltd | Other services | 2019 |
| R Ball Plastering Concepts Ltd | Construction | 2022 |
| R Cleaning South West Ltd | Administrative & support | 2014 |
| R Turpie Construction Ltd | Real estate | 2023 |
| RAC Developments Limited | Hospitality | 1988 |
| Rata Kararehe Limited | Professional & scientific | 2009 |
| Rebecca Gabrielle Bennett Limited | Extraterritorial | 2024 |
| Rebecca Parsonage Limited | Financial services | 2017 |
| Rebekah Gabrielle Limited | Extraterritorial | 2024 |
| Red Cat Letting Limited | Real estate | 2025 |
| Red Hairdressing (Liskeard) Ltd | Other services | 2010 |
| Reds Treads Ltd | Wholesale & retail | 2019 |
| Rendle Asset Management Ltd | Real estate | 2019 |
| Rendle Developments Ltd | Construction | 2019 |
| Rendle Homes Ltd | Construction | 2019 |
| Replan Your Space Ltd | Professional & scientific | 2020 |
| Restord GWC Opco Ltd | Information & communication | 2026 |
| Restord Ltd | Agriculture & fishing | 2023 |
| Restore Houses to Homes Ltd. | Construction | 2006 |
| Retro Resale Ltd | Wholesale & retail | 2026 |
| RG Welding Ltd | Construction | 2011 |
| Richards Court Management Company Limited | Households | 1988 |
| Richmond Property Services (South West) Limited | Real estate | 2020 |
| River Recreation Centre CIC | Arts & recreation | 2013 |
| RJ501 Consulting Ltd | Information & communication | 2018 |
| RK Equestrian Limited | Extraterritorial | 2007 |
| RK Holdings Limited | Professional & scientific | 2007 |
| Roar Cosmetics Limited | Manufacturing | 2025 |
| Roberts and Sons Property Ltd | Real estate | 2025 |
| Rocky Road to Limited | Manufacturing | 2026 |
| ROD Smith Plumbing & Heating Limited | Other services | 2020 |
| Roobs World Limited | Information & communication | 2024 |
| Royal Cafes (Liskeard) Limited | Professional & scientific | 1971 |
| Réaltógather Therapy CIC | Education | 2014 |
| S & a Mojo LLP | | 2010 |
| S & G Brickworks Limited | Construction | 2003 |
| S Gilbert & SON Ltd | Construction | 2020 |
| S W Hygiene Limited | Water & waste | 1993 |
| S.G. Portfolio Management Ltd | Households | 2019 |
| SAC D'Or Ltd | Wholesale & retail | 2020 |
| Sadler & Bourne Ltd | Construction | 2010 |
| Saffycat Ltd | Wholesale & retail | 2019 |
| SAI Thanuj Aesthetics Limited | Health & social care | 2019 |
| Salus Games Ltd | Information & communication | 2017 |
| Samphire & Shore Ltd | Wholesale & retail | 2026 |
| Sandy Garage Limited | Wholesale & retail | 2005 |
| Santos + Co (Dorchester) Limited | Hospitality | 2025 |
| Santos + Co Limited | Hospitality | 2024 |
| Sarah Luker Limited | Health & social care | 2014 |
| SAS & Trewartha's Plumbing & Heating Limited | Construction | 1995 |
| Saul Plant Services Limited | Administrative & support | 2019 |
| Saunders Liskeard Ltd | Wholesale & retail | 2006 |
| Scoble Development Ltd | Construction | 2014 |
| Scoble Plant Management Ltd | Construction | 2014 |
| Scrawsdon Management Company Limited | Households | 2024 |
| SD Build SW Ltd | Construction | 2024 |
| Seabaz Ltd | Hospitality | 2024 |
| Secured Funding Limited | Financial services | 2017 |
| Senvocate Ltd | Education | 2023 |