| Resinbound Southwest Ltd | Construction | 2017 |
| Robert Nagle Consulting Limited | Real estate | 2025 |
| Robin Designs Ltd | Professional & scientific | 2014 |
| Rural Response Limited | Professional & scientific | 2020 |
| Russell Knight Personal Training Ltd | Health & social care | 2016 |
| Sallystev Limited | Health & social care | 2019 |
| SAN VEL Ltd | Professional & scientific | 2020 |
| Sandcastle Homes Ltd | Real estate | 2024 |
| Scientific Properties Ltd | Real estate | 2019 |
| Serac Property Ltd | Real estate | 2021 |
| Shandon Property Limited | Real estate | 2024 |
| Southerndown Developments Limited | Construction | 2015 |
| SRI Kubera Properties Ltd | Real estate | 2026 |
| Stangold Limited | Construction | 2025 |
| Sullivans Garden Machinery Limited | Other services | 2010 |
| T.E. Dibble Limited | Construction | 2002 |
| Tanners Court Residents Company Limited | Households | 1990 |
| Telpro Limited | Professional & scientific | 2003 |
| Terrapin Tents and Contents Limited | Administrative & support | 2012 |
| THE NGM Trust | Information & communication | 2011 |
| THE Wellness Way Health Hub Ltd | Administrative & support | 2025 |
| Thornbury and District Heritage Trust | Arts & recreation | 1987 |
| Thornbury Baptist Church | Other services | 2015 |
| Thornbury Community Building Trust (Tcbt) | Education | 2006 |
| Thornbury Skate Park C.I.C. | Arts & recreation | 2026 |
| Vacuum Pump Services Limited | Administrative & support | 2018 |
| Voyce Pullin Markets Limited | Wholesale & retail | 2003 |
| Weldmec Construction Limited | Construction | 2005 |
| White Leaf Trading Limited | Wholesale & retail | 2024 |
| Woodlane Dental Equipment Limited | Manufacturing | 2009 |
| Working Breakfast Connections Ltd | Administrative & support | 2015 |
| X-Press Legal Services (London) Limited | Professional & scientific | 2014 |
| Zense LLP | | 2005 |