| Polkerris Beach Co Ltd | Wholesale & retail | 2015 |
| Pollocks PUB Co Ltd | Hospitality | 2014 |
| Polmear Properties Ltd | Real estate | 2025 |
| Polstar Business Solutions Ltd | Professional & scientific | 2024 |
| Poorly PIG Ltd | Transport & logistics | 2016 |
| Porlock Vale Bloodstock Limited | Other services | 2020 |
| Porthcothan Bay Jewellery Ltd | Manufacturing | 2019 |
| Portmellon Trading Limited | Wholesale & retail | 2004 |
| Posthuman Productions Ltd | Information & communication | 2026 |
| Precision Casting Limited | Manufacturing | 1962 |
| Prescribing Beauty Ltd | Health & social care | 2025 |
| Prestige Access Worldwide Ltd | Mining & quarrying | 2020 |
| Prestige Properties SW Ltd | Construction | 2018 |
| Prime Geospatial Ltd | Professional & scientific | 2025 |
| Prime Surveys Limited | Professional & scientific | 2016 |
| Primer Material Depot Limited | Wholesale & retail | 2025 |
| Printed by the Sea Ltd | Manufacturing | 2022 |
| Pro Scoop Ltd | Water & waste | 2024 |
| Procul Designs Limited | Wholesale & retail | 2026 |
| Promoting Independence South West Limited | Health & social care | 2016 |
| Proper Bathrooms Ltd | Construction | 2025 |
| Proq Barbecues & Smokers Limited | Manufacturing | 2008 |
| Protective Solutions (UK) Ltd | Administrative & support | 2006 |
| Prua CIC | Administrative & support | 2024 |
| PS Couriers (Cornwall) Limited | Transport & logistics | 2005 |
| PS Pentewan Ltd | Wholesale & retail | 2022 |
| Puissance Property Ltd | Real estate | 2017 |
| Purityrp Ltd | Information & communication | 2023 |
| Purrrfect Pets Ltd | Agriculture & fishing | 2018 |
| Push Logic Ltd | Professional & scientific | 2011 |
| PVM Property Limited | Real estate | 2014 |
| Pyepaddle Publishing Ltd | Information & communication | 2024 |
| Pyth Property Limited | Administrative & support | 2020 |
| Qualstitch Ltd | Manufacturing | 2013 |
| Queenies Pantry Ltd | Hospitality | 2019 |
| Quest Fishing Limited | Agriculture & fishing | 2025 |
| Quvoo Property Solutions Ltd | Construction | 2022 |
| R & R Morcom Holdings Limited | Administrative & support | 2011 |
| R a Groundworks and Utilities Ltd | Construction | 2022 |
| R G GAY Plant Hire LLP | | 2016 |
| R G Morcom Holdings Limited | Construction | 2025 |
| R G Morcom Investments Limited | Real estate | 2002 |
| R G Morcom Properties Limited | Construction | 1999 |
| R Kelly Plumbing and Heating Limited | Construction | 2014 |
| R&D Commercial Limited | Real estate | 2018 |
| R&L Developments Group Ltd | Construction | 2026 |
| R&R Pasties Limited | Manufacturing | 2017 |
| R.H. Fibreboard Containers Limited | Manufacturing | 1980 |
| R.Price Plumbing & Heating Ltd | Construction | 2021 |
| RAC Electrics Limited | Construction | 2022 |
| Ragnarags Ltd | Wholesale & retail | 2018 |
| Ragsyboy Limited | Construction | 2024 |
| Raise the Standard Security Consultancy Ltd | Administrative & support | 2024 |
| Rakhia Mumtaz Properties Ltd | Real estate | 2026 |
| Ralm Property Ltd | Real estate | 2022 |
| RAY Hutton Construction Ltd | Construction | 2009 |
| Razorbill Ltd | Agriculture & fishing | 2016 |
| Rbts Properties Ltd | Households | 2026 |
| RDH Homes Ltd | Construction | 2025 |
| Reach Your Potential Limited | Health & social care | 2011 |
| Reachout Creative Futures Community Interest Company | Education | 2011 |
| Recall (South West) Ltd | Administrative & support | 2017 |
| Recell-It Ltd | Wholesale & retail | 2024 |
| Reclaym Limited | Mining & quarrying | 2000 |
| Refined Commerce Ltd | Information & communication | 2013 |
| Refkit Limited | Wholesale & retail | 1997 |
| Reflex Marketing & Promotions Limited | Administrative & support | 1995 |
| Rekon Developments Ltd | Construction | 2024 |
| Remake Cornwall Limited | Health & social care | 2019 |
| Remembering OUR Roots CIC | Education | 2015 |
| Rems Cafe Limited | Hospitality | 2024 |
| Renaissance-Mein Ltd | Agriculture & fishing | 2020 |
| Renewable British Energy Ltd | Professional & scientific | 2018 |
| Renewable Property Holdings Limited | Financial services | 2026 |
| Renewabuild Limited | Professional & scientific | 2012 |
| Rensdetailing Cornwall Ltd | Administrative & support | 2025 |
| Residential Property Management Limited | Real estate | 1986 |
| Restormel Arts | Arts & recreation | 1992 |
| Restormel Building Contractors Limited | Construction | 2006 |
| Revilo Project Services Limited | Real estate | 2021 |
| Richards Homes Limited | Real estate | 1995 |
| Richards Homes Property Management Limited | Real estate | 2004 |
| Ridgeline Property Services Limited | Construction | 2019 |
| Ripple Studio Cornwall Ltd | Information & communication | 2025 |
| Rising Sun Classics Ltd | Wholesale & retail | 2025 |
| River Valley Garage Ltd | Wholesale & retail | 2023 |
| Riverside Flats Meva Ltd | Households | 2023 |
| RJ Controls Ltd | Professional & scientific | 2013 |
| RJM Property & Development Consultants Ltd | Professional & scientific | 2012 |
| RLG Kitchens and Bathrooms Ltd | Construction | 2025 |
| ROB Brokes Construction Ltd | Construction | 2024 |
| ROB Button Plumbing & Heating Ltd | Construction | 2016 |
| Rock Start Ltd | Information & communication | 2025 |
| Rocket Pixels Ltd | Arts & recreation | 2016 |
| Rockhill Flooring Ltd | Wholesale & retail | 2024 |
| Rockleigh Place Ltd | Hospitality | 2017 |
| Rocksafe Ltd. | Real estate | 2006 |
| Romulus Property Investments Limited | Real estate | 2025 |
| ROOM5 Lounge Bar Ltd | Hospitality | 2025 |
| Rory Barnicle Ltd | Transport & logistics | 2019 |