| RIA Delta Ltd | Hospitality | 2022 |
| Richard Hemming Consulting Limited | Other services | 2022 |
| Rickjo Ltd | Manufacturing | 2022 |
| Rival Records Limited | Wholesale & retail | 2013 |
| River Burn Consulting Ltd | Professional & scientific | 2021 |
| River View Tavistock Management Company Limited | Real estate | 2001 |
| Rivercraft Developments LLP | | 2001 |
| RJM Project Solutions Limited | Information & communication | 2011 |
| Rlswim. Limited | Arts & recreation | 2026 |
| Robertson's Tavistock LLP | | 2013 |
| Robustworks Ltd | Agriculture & fishing | 2021 |
| Rockdem Limited | Mining & quarrying | 2026 |
| Rockmount Townhouse Ltd | Hospitality | 2017 |
| Roots Shoots & Boots Ltd | Administrative & support | 2020 |
| Rotherfield House (Surbiton)Maintenance Association Limited | Households | 1963 |
| Rs&B Holdings Limited | Administrative & support | 2024 |
| Rsyb Ltd | Administrative & support | 2020 |
| Rtdata Ltd | Information & communication | 2023 |
| Russell Court Management (Tavistock) Limited | Households | 1995 |
| Safe & Sound Tavistock Ltd | Construction | 2020 |
| Saffron Taverns Limited | Hospitality | 2015 |
| Samio Technology Ltd | Information & communication | 2025 |
| Sante Care at Home Limited | Health & social care | 2013 |
| Sarah FOX Travel Consultancy Ltd | Administrative & support | 2022 |
| Sauce Paint Ltd | Wholesale & retail | 2024 |
| SB Pure Fitness Ltd | Arts & recreation | 2025 |
| Scaledoctor Limited | Health & social care | 2014 |
| School Road Amenity Limited | Extraterritorial | 2004 |
| Screenhome Property Management Limited | Households | 1996 |
| Selwood Johns Limited | Professional & scientific | 2016 |
| Sgav Ltd | Professional & scientific | 2024 |
| Sharrock Trading Ltd | Arts & recreation | 2019 |
| Sherrill Farm Holidays Cottages Limited | Hospitality | 2004 |
| Sherston Parva Associates Limited | Professional & scientific | 1998 |
| Sherwood Management Company (2005) Ltd | Households | 2005 |
| Shine Sky Limited | Transport & logistics | 2020 |
| Shore Tech (SW) Limited | Wholesale & retail | 2018 |
| Show UP NOW Ltd | Arts & recreation | 2020 |
| Silverm@Ix Ltd | Construction | 2021 |
| Simon Powell Commercial Limited | Real estate | 2026 |
| Simply Outdoors LLP | | 2017 |
| SIX Points Alfriston Limited | Hospitality | 2019 |
| SJL Interim Solutions Limited | Professional & scientific | 2014 |
| SJP Motor Services Limited | Wholesale & retail | 2012 |
| Skrum | Health & social care | 2008 |
| Snhc Holdings Limited | Professional & scientific | 2019 |
| Soft Touch Needlecraft Limited | Wholesale & retail | 2021 |
| Somnos South West Ltd | Health & social care | 2017 |
| Soul Plants Clinic Ltd | Manufacturing | 2022 |
| South Hams Holiday Homes Limited | Real estate | 2007 |
| South West Furnishings Limited | Wholesale & retail | 2008 |
| South West Service Centre Ltd | Wholesale & retail | 2010 |
| South West Spine Specialists Limited | Health & social care | 2009 |
| Sparling Recycling Limited | Water & waste | 2014 |
| Springfield Residents Limited | Other services | 2002 |
| Stannary Court Management Limited | Households | 1987 |
| Steeky Meadow CIC | Agriculture & fishing | 2024 |
| Steve Jones Plant Hire & Groundworks Limited | Construction | 2026 |
| Steve Moore Project Management Ltd | Construction | 2021 |
| Stride Strategy Ltd | Administrative & support | 2025 |
| Studio 15 Cabinet Makers Ltd | Construction | 2004 |
| Stylem@Ix Ltd | Construction | 2021 |
| Surname Ancestory Ltd | Wholesale & retail | 2024 |
| Sustainable Product Supplies Ltd | Administrative & support | 2013 |
| Sutcliffe Plumbing & Heating (South West) Limited | Construction | 2004 |
| SW Agronomy Ltd | Professional & scientific | 2023 |
| Syl-Ach MED Limited | Health & social care | 2025 |
| T Dodd Agri Services Ltd | Manufacturing | 2023 |
| Talent for Growth Limited | Administrative & support | 2006 |
| Tamar and Moor Boundary Solutions Ltd | Construction | 2021 |
| Tamar Packaging Limited | Manufacturing | 2012 |
| Tamar Vintage Tractors Ltd | Manufacturing | 1996 |
| Tamsyn & Co Ltd | Professional & scientific | 2022 |
| Taoyuan Limited | Hospitality | 2024 |
| Tavihelps Community Interest Company | Hospitality | 2025 |
| Taviskate Community Interest Company | Arts & recreation | 2025 |
| Tavistock and Tamar Valley Home Care Limited | Other services | 2018 |
| Tavistock Area Support Services | Health & social care | 2008 |
| Tavistock Association Football Club CIC | Arts & recreation | 2023 |
| Tavistock Athletic Club Limited | Arts & recreation | 2018 |
| Tavistock Bathrooms & Tiles Limited | Wholesale & retail | 2015 |
| Tavistock BID Limited | Other services | 2010 |
| Tavistock Brooklands House Management Company Limited | Real estate | 2015 |
| Tavistock Canal Property Ltd | Real estate | 2026 |
| Tavistock Caravans Limited | Wholesale & retail | 2012 |
| Tavistock Constitutional Club Company Limited(The) | Real estate | 1895 |
| Tavistock Container Storage Ltd | Administrative & support | 2016 |
| Tavistock Couriers Limited | Transport & logistics | 2024 |
| Tavistock Enterprise Hub CIC | Real estate | 2012 |
| Tavistock Golf Club Trading Ltd | Arts & recreation | 2024 |
| Tavistock Heritage Trust | Education | 2017 |
| Tavistock Hire Centre Limited | Construction | 2006 |
| Tavistock Mirror Framing Co Ltd. | Wholesale & retail | 1997 |
| Tavistock North Railway Cottages Co Ltd | Households | 2020 |
| Tavistock Painting Services Limited | Construction | 2025 |
| Tavistock Pet Emporium Limited | Wholesale & retail | 2013 |
| Tavistock Physio Clinics Limited | Health & social care | 2011 |
| Tavistock Refillery CIC | Wholesale & retail | 2023 |
| Tavistock Removals Ltd | Transport & logistics | 2020 |
| Tavistock Self Storage Ltd | Administrative & support | 2016 |