| Penhaligon's Renovations Ltd | Construction | 2018 |
| Peninsula Cheque Exchange Limited | Wholesale & retail | 2003 |
| Penzance Comedy Festival Ltd | Arts & recreation | 2025 |
| Peppers Dogs Limited | Wholesale & retail | 2016 |
| Perfect Sums Bookkeeping and Accounts Ltd | Professional & scientific | 2019 |
| Perfectly Packaged Holidays & Travel Ltd | Administrative & support | 2026 |
| Pg&Son Tunnels Ltd | Construction | 2021 |
| Phoenix Catering Engineers Ltd | Manufacturing | 2020 |
| Phoenix Gymnastics Ltd | Arts & recreation | 2011 |
| Phoenix Media Limited | Information & communication | 2020 |
| Pilana Limited | Hospitality | 2025 |
| Pink Flamingo Films Limited | Information & communication | 2015 |
| Pink Flamingo Management Limited | Arts & recreation | 2019 |
| Pink Flamingo Records Limited | Information & communication | 2020 |
| Piskie Print Studio Ltd | Professional & scientific | 2024 |
| PK Awakened Life Ltd | Education | 2024 |
| Plumbing South West Ltd | Construction | 2022 |
| Pooleford Property Services & Investments Limited | Administrative & support | 2006 |
| Pore Scale Solutions Limited | Professional & scientific | 2000 |
| Porthcurno Holdings Limited | Hospitality | 2017 |
| Powells Garage Limited | Real estate | 2009 |
| PR62 Limited | Real estate | 2021 |
| Praze Storage Solutions Limited | Real estate | 2015 |
| Precision Builders Cornwall Ltd | Construction | 2024 |
| Presspointit Ltd | Information & communication | 2024 |
| Pretty Useful Ltd | Wholesale & retail | 2006 |
| Price Properties Investments Limited | Real estate | 2020 |
| Price Properties Limited | Construction | 2012 |
| Pritchett & Pritchett Ltd | Health & social care | 2024 |
| Promas, Caring for People CIC | Education | 2013 |
| Property JPS Ltd | Real estate | 2023 |
| Property’S Southwest Ltd | Real estate | 2024 |
| Prospect Farm Cornwall Limited | Agriculture & fishing | 2007 |
| Protec Scaffolding Ltd | Construction | 2026 |
| Pulse 4U Care Ltd | Health & social care | 2023 |
| Pure-Tech-Fabrication Ltd | Manufacturing | 2022 |
| QT Bolling Ltd | Real estate | 2020 |
| Quadratics Consulting Limited | Professional & scientific | 2001 |
| Quercus Building Solutions Limited | Construction | 2015 |
| Quick CAB Cornwall Ltd | Transport & logistics | 2025 |
| Quincy Communications Ltd | Information & communication | 2024 |
| R James & Sons Plant Hire Limited | Administrative & support | 2015 |
| R Pascoe & Sons (Granite) Limited | Manufacturing | 2016 |
| R Pilsbury Groundworks Ltd | Construction | 2024 |
| R Stone Developments Ltd | Construction | 2019 |
| R.L.K. Services Limited | Mining & quarrying | 2005 |
| Rain Productions Limited | Information & communication | 2022 |
| Ranger Court Ltd | Households | 2025 |
| Recovery & Empowerment Hub Ltd | Other services | 2025 |
| Recruitment Pool Limited | Administrative & support | 2019 |
| Reef N Beef PZ Ltd | Hospitality | 2025 |
| REG Projects Ltd | Information & communication | 2025 |
| REHAB2PLAY Ltd | Extraterritorial | 2024 |
| Reims Employment Limited | Administrative & support | 2019 |
| Reims Management Limited | Professional & scientific | 2019 |
| RH Eddy Limited | Agriculture & fishing | 2018 |
| Rheumatoid Factor Limited | Wholesale & retail | 2014 |
| RJ Consulting (London) Limited | Administrative & support | 2019 |
| RJL Building Solutions Ltd | Construction | 2013 |
| RM & H Eddy Limited | Agriculture & fishing | 2022 |
| RM Consulting (London) Limited | Professional & scientific | 2019 |
| RNC Developments Limited | Construction | 2011 |
| RO Dama Farm CIC | Agriculture & fishing | 2020 |
| Rogue Otherworld Ltd | Arts & recreation | 2021 |
| Rooftop Build Limited | Construction | 2017 |
| Rosco & Gray Services Ltd | Professional & scientific | 2023 |
| Rose&Lavender Limited | Wholesale & retail | 2018 |
| Rosewarne Campsite Limited | Hospitality | 2026 |
| Roskear Villas Limited | Real estate | 2002 |
| Rossi Flooring Ltd | Construction | 2021 |
| Rowan Public Affairs Limited | Administrative & support | 2004 |
| Rowantree Properties Cornwall Limited | Real estate | 2023 |
| RR Marine Consultancy Limited | Professional & scientific | 2023 |
| RTL Scaffolding Ltd | Construction | 2022 |
| Rubbish and Household Clearances Cornwall Limited | Water & waste | 2024 |
| Rybinski Consultancy Services Ltd | Information & communication | 2022 |
| S & J Industries (UK) Ltd | Extraterritorial | 2010 |
| S Bowen Ltd | Hospitality | 2013 |
| S J Hussey Ltd | Wholesale & retail | 2019 |
| S J Moyle Building Contractors Limited | Construction | 2016 |
| Sacred Soul Rising Ltd | Information & communication | 2023 |
| Samuel Williams & Company (Funeral Directors) Ltd | Extraterritorial | 2025 |
| Scarrott Harper Taverns Limited | Hospitality | 2026 |
| Second Spark Ltd | Professional & scientific | 2019 |
| SEE View Properties Ltd | Real estate | 2024 |
| Shoreline Holiday Services Limited | Real estate | 2024 |
| Simply Stevens Ltd | Hospitality | 2021 |
| SJ Weights UK Limited | Arts & recreation | 2025 |
| Sjfitnessuk Ltd | Other services | 2012 |
| Slice of Cornwall Limited | Hospitality | 2022 |
| Smart Renewables Limited | Energy | 2026 |
| Smgv 12 Limited | Hospitality | 2012 |
| Smiley Piston Ltd | Wholesale & retail | 2024 |
| Social Impact Management Southwest CIC | Professional & scientific | 2022 |
| Social Work Discovery CIC | Education | 2026 |
| Solas Robin Cullen-Russell Ltd | Extraterritorial | 2025 |
| Special Clean Limited | Administrative & support | 2022 |
| Specialist Business Developments Ltd | Construction | 2018 |
| Specialist Business Units Ltd | Real estate | 2008 |
| Specialist RES Units Ltd | Real estate | 2020 |