| R1 Electrical (Bath) Limited | Construction | 2017 |
| Rabbit Red Limited | Energy | 2014 |
| Radstock and Westfield Big Local Community Interest Company | Health & social care | 2017 |
| Radstock Auto Service & Tyres Ltd | Wholesale & retail | 2025 |
| Radstock Building and Roofing Supplies Limited | Construction | 2008 |
| Radstock Business Hub Limited | Real estate | 2023 |
| Radstock Cafe Ltd | Hospitality | 2025 |
| Radstock Carpet & Flooring Ltd | Wholesale & retail | 2015 |
| Radstock Developments Limited | Construction | 2008 |
| Radstock Engineering Limited | Professional & scientific | 2019 |
| Radstock Grill Ltd | Hospitality | 2023 |
| Radstock Metals Limited | Water & waste | 2012 |
| Radstock Midsomer Norton and District Museum Society | Arts & recreation | 1999 |
| Radstock Museum | Arts & recreation | 1995 |
| Radstock Road Motor Co.Limited | Other services | 1956 |
| Radstock School Development Ltd | Construction | 2013 |
| Radstock Tyres & Services Ltd | Wholesale & retail | 2026 |
| Rainbow Eco Limited | Manufacturing | 2024 |
| Rainbow Eco Products Limited | Manufacturing | 2011 |
| Rajani Riverside Restaurant Ltd | Hospitality | 2025 |
| Ralton Properties Ltd | Real estate | 2022 |
| Rausch UK Limited | Manufacturing | 2005 |
| RAW Real Being Ltd | Information & communication | 2019 |
| Rawson Close Ltd | Households | 2022 |
| RAY Swain Ltd | Other services | 2025 |
| Razor FC Youth CIC | Education | 2025 |
| Razor Global Solutions Ltd | Professional & scientific | 2021 |
| Razorback Services Limited | Education | 2018 |
| RD Motorworx Ltd | Wholesale & retail | 2020 |
| RDI Interiors (SW) Limited | Manufacturing | 2018 |
| Reagh Solar Limited | Energy | 2025 |
| Reclaimed Radiators Ltd | Construction | 2010 |
| Reco JCB Limited | Wholesale & retail | 2021 |
| Red Field Property Consultants Limited | Professional & scientific | 2018 |
| Red House Solar Ltd | Energy | 2020 |
| Red LTX Ltd | Professional & scientific | 2022 |
| Red Post Castle Ltd | Hospitality | 2025 |
| Redwood’S Property Maintenance Limited | Real estate | 2019 |
| Reed James Ltd | Real estate | 2014 |
| Reet Trading Private Limited | Wholesale & retail | 2025 |
| Regency Recruitment (Cheltenham) Limited | Administrative & support | 2000 |
| Rehabilitation Security Services Ltd | Administrative & support | 2019 |
| Relovedshirts Ltd | Wholesale & retail | 2025 |
| Remac Ltd | Construction | 2019 |
| Renatec Limited | Wholesale & retail | 2005 |
| Renovate With Reno Ltd | Construction | 2023 |
| Resonant Engineering Ltd | Professional & scientific | 2023 |
| Rest Assured Testing Limited | Information & communication | 2006 |
| Restore Therapy Clinic Ltd | Health & social care | 2024 |
| Restore Therapy Limited | Health & social care | 2020 |
| Rethink INK Ltd | Manufacturing | 2023 |
| Retribution Distilling Company Limited | Manufacturing | 2019 |
| Retro Repairs Limited | Wholesale & retail | 2023 |
| Rextec UK Limited | Manufacturing | 2006 |
| Reza Hosseini Group Ltd | Transport & logistics | 2025 |
| Rhi's Classic Car Storage Limited | Transport & logistics | 2024 |
| Richard Gatton Limited | Professional & scientific | 2013 |
| Richard Wood Engineering Limited | Manufacturing | 1982 |
| Ridings Farm Bath Ltd | Transport & logistics | 2025 |
| Riverside Carpentry and Building (Bath) Ltd | Manufacturing | 2019 |
| Riverside Recruitment Limited | Administrative & support | 2007 |
| RJP Electrics Ltd | Construction | 2022 |
| RK (Bath) Limited | Construction | 2021 |
| RK IT Solutions Limited | Information & communication | 2010 |
| RMB Housing Ltd | Real estate | 2021 |
| Roadle Property Group Limited | Construction | 2023 |
| Rockingham Park Management Limited | Financial services | 2015 |
| Rogers Developments Ltd | Construction | 2026 |
| Rolling Stone Developments Limited | Real estate | 2017 |
| Roman City Construction Ltd | Manufacturing | 2024 |
| Roman ROD Limited | Construction | 2002 |
| Root Connections C.I.C. | Health & social care | 2018 |
| Root Productions Limited | Information & communication | 2006 |
| Rosa Landscaping and Maintenance Ltd | Administrative & support | 2023 |
| Roscoff Deli Limited | Hospitality | 2009 |
| Rose & Thistle Floristry Ltd | Wholesale & retail | 2019 |
| Round Hill Roastery Limited | Wholesale & retail | 2012 |
| RPA Electrics Ltd | Construction | 2015 |
| Rubysonn Properties Ltd | Real estate | 2026 |
| Rupprich & Keyworth Ltd | Construction | 2024 |
| Russ & JON Enterprise Ltd | Hospitality | 2022 |
| Rutab Ltd | Manufacturing | 2023 |
| Ruvarashe Ltd | Health & social care | 2013 |
| RV Promotions Limited | Arts & recreation | 2018 |
| RWF Millard Limited | Transport & logistics | 2003 |
| RWH Plumbing & Heating Limited | Construction | 2010 |
| S & E Security Limited | Administrative & support | 2016 |
| S & J Maggs Carpentry & General Builders Limited | Construction | 2026 |
| S B M Limited | Real estate | 2004 |
| S Davis Building Ltd | Construction | 2015 |
| S M Lecomber Ltd | Arts & recreation | 2024 |
| S V Hanley Ltd | Energy | 2015 |
| S&B Matthews Plumbing and Heating Ltd | Construction | 2022 |
| S. Day Carpentry and Construction Limited | Construction | 2018 |
| S.J.K Homes Limited | Real estate | 2024 |
| S4N Lytchett Ltd | Energy | 2018 |
| SA125 Property Ltd | Real estate | 2018 |
| Safelectrical Ltd | Wholesale & retail | 2003 |
| Safeway Home Improvements (SW) Limited | Construction | 2018 |
| Sally Williamson Environmental Health Ltd | Professional & scientific | 2026 |