| Mike Leggett Building Plans Limited | Professional & scientific | 2012 |
| MJC Digital Ltd | Information & communication | 2014 |
| Moor Appliances Limited | Other services | 2019 |
| Moor Beauty Ltd | Extraterritorial | 2014 |
| Moor Sweep Installs Ltd | Construction | 2024 |
| Moorscape Limited | Construction | 2016 |
| Moose Bathrooms and Plumbing Ltd | Construction | 2025 |
| MTP (Services) Limited | Construction | 2011 |
| Munch at Millbay Limited | Hospitality | 2022 |
| MVB Boiler Services Limited | Construction | 2003 |
| N S Oriental Limited | Wholesale & retail | 2013 |
| NAMES4DESIGN Limited | Information & communication | 2002 |
| Narcolytical Limited | Professional & scientific | 2009 |
| Netherton Industries Limited | Professional & scientific | 2018 |
| Nexuslit Ltd | Professional & scientific | 2025 |
| Nichols Osteopathic Ltd | Health & social care | 2003 |
| O & S Wholesale Ltd | Extraterritorial | 2010 |
| Occasion Cards Ltd | Manufacturing | 2013 |
| Odds & Buds Ltd | Wholesale & retail | 2023 |
| Oruma Spec Limited | Information & communication | 2026 |
| Overcombe Hotel Limited | Hospitality | 2004 |
| P of W PUB Company Ltd | Hospitality | 2018 |
| Paladin Advocates Ltd | Professional & scientific | 2011 |
| Pangolin Consulting Ltd | Information & communication | 2017 |
| Paul Allen Wealth Management Limited | Financial services | 2014 |
| Peace and Coffee Limited | Hospitality | 2017 |
| Pencreber Properties Ltd | Construction | 2024 |
| Peninsula Dermatology Limited | Health & social care | 2022 |
| Peninsula Minds Limited | Health & social care | 2025 |
| Peninsula Property Holdings Limited | Hospitality | 2026 |
| Peninsula School Services Limited | Education | 2024 |
| Pepper Limited | Information & communication | 1999 |
| Phatmedia Limited | Other services | 2013 |
| Picollet Ltd | Extraterritorial | 2007 |
| Plymouth Concerts Limited | Arts & recreation | 2024 |
| Pond Ltd | Information & communication | 2018 |
| Position Approximate Limited | Information & communication | 2025 |
| Power Trolley Rentals Limited | Administrative & support | 2002 |
| Princetown Community Preschool CIC | Education | 2015 |
| Purple Research Solutions Ltd | Information & communication | 2002 |
| QI Systems (SW) Limited | Wholesale & retail | 2009 |
| R M Walkden Services Limited | Professional & scientific | 2007 |
| R.Hart Care Limited | Health & social care | 2001 |
| R3 Safety Engineering Limited | Professional & scientific | 2014 |
| Redbarn Solutions Limited | Professional & scientific | 2003 |
| Reflexology Academy Limited | Education | 2004 |
| Resolute Outcomes LLP | | 2015 |
| Rideout Group Ltd | Financial services | 2026 |
| RJB Engineering (SW) Limited | Manufacturing | 2019 |
| Rl-Sa Properties Ltd | Households | 2019 |
| Rockinbikes Ltd | Wholesale & retail | 2012 |
| Roobarb & Co. Gifts Ltd | Wholesale & retail | 2025 |
| Rookham Hall Management Limited | Real estate | 1995 |
| Roost Devon Ltd | Real estate | 2022 |
| Rose Mills Print Finishers Limited | Manufacturing | 2007 |
| Roundabout & Moxham Garages Ltd | Wholesale & retail | 2014 |
| RR & Company Ltd | Professional & scientific | 2012 |
| Rumleigh Farm Limited | Agriculture & fishing | 2020 |
| S DOT P Ltd | Construction | 2012 |
| S Short Limited | Professional & scientific | 2024 |
| Sanguines Investments Limited | Health & social care | 2005 |
| Sante Employment Ltd | Administrative & support | 2011 |
| Sastrugi Limited | Professional & scientific | 2008 |
| Scott Homes (SW) Ltd | Real estate | 2017 |
| Securesys Ltd | Other services | 2020 |
| Sigma Nova Ltd | Professional & scientific | 2013 |
| Sitini Ltd | Professional & scientific | 2025 |
| SJB Estates Limited | Real estate | 2024 |
| Ski-Ed Conference Ltd | Administrative & support | 2025 |
| Soapbox Agency Ltd | Administrative & support | 2021 |
| Sortridge and Grimstone Leat CIC | Water & waste | 2025 |
| South West Scanning Services Limited | Professional & scientific | 1989 |
| Southwest Orthodontics Ltd | Health & social care | 2017 |
| Spirit of Adventure (Dartmoor) Limited | Arts & recreation | 1999 |
| Spotty Dog (Cornwall) Ltd | Hospitality | 2023 |
| Squeezy Selling Ltd | Wholesale & retail | 2024 |
| Starland Music Ltd | Wholesale & retail | 2005 |
| Steel Fish Ltd | Manufacturing | 2007 |
| Steve Thornton Builders Ltd | Construction | 2024 |
| Stirling and SON Boatyards Limited | Transport & logistics | 2019 |
| Stirling and SON Limited | Manufacturing | 2012 |
| Stockbridge Consultancy Limited | Information & communication | 2015 |
| T H March (EBT) Limited | Professional & scientific | 2005 |
| T T Legends Limited | Wholesale & retail | 2011 |
| T.H. March EOT Limited | Administrative & support | 2025 |
| T.H. March Pension Trustees Limited | Financial services | 2013 |
| T.H.March & Co.Limited | Financial services | 1911 |
| Tackle and Grapple BJJ Ltd | Education | 2024 |
| Tally HO! Brewery Limited | Manufacturing | 2015 |
| Tamar Belle Limited | Arts & recreation | 1992 |
| Tamar Joinery Company (South West) Ltd | Construction | 2021 |
| Tamar Marketing Ltd | Professional & scientific | 2020 |
| Tamar Timber Frames Ltd | Construction | 2026 |
| Tamar Valley Vineyard Ltd | Agriculture & fishing | 2015 |
| Tavistock Football Development Centre Ltd | Education | 2024 |
| Tavistock Window Cleaning Ltd | Administrative & support | 2018 |
| Tech Future Media Ltd | Information & communication | 2026 |
| Tecnica Europe Limited | Manufacturing | 1991 |
| TEN Tors Dartmoor Ltd | Other services | 2019 |
| TEN Tors Ltd | Arts & recreation | 2019 |