| Renovation Solutions Limited | Construction | 2011 |
| Renovationsbyfarr Limited | Construction | 2021 |
| Renstep Limited | Real estate | 2022 |
| Repetitive Flexible Supply Limited | Professional & scientific | 2000 |
| Rephrase IT Ltd | Extraterritorial | 2022 |
| Requex Ltd | Information & communication | 2022 |
| Research Communication International UK Limited | Professional & scientific | 2007 |
| Research Intel Ltd | Professional & scientific | 2024 |
| Research Trove Ltd | Information & communication | 2022 |
| Reside Bath Limited | Households | 2008 |
| Residential Analysts Limited | Information & communication | 2016 |
| Resilicom (UK) Ltd | Information & communication | 2024 |
| Resolution Records Ltd | Wholesale & retail | 2025 |
| Respice Limited | Professional & scientific | 2020 |
| Respun Active Ltd | Wholesale & retail | 2025 |
| Restory Automotive Ltd | Wholesale & retail | 2020 |
| Results Align Ltd | Health & social care | 2020 |
| Results Health Clubs Ltd | Professional & scientific | 1997 |
| Results Training (Bath) Limited | Other services | 2013 |
| Rethink Menopause Limited | Health & social care | 2022 |
| Retirement Properties Limited | Construction | 1984 |
| Retorrick Mill Hospitality Ltd | Hospitality | 2012 |
| Retorrick Mill Ltd | Hospitality | 2012 |
| Retrro Limited | Manufacturing | 2013 |
| Retti AI Ltd | Information & communication | 2026 |
| Reveal Innovation Ltd | Information & communication | 2025 |
| Revelstoke (Bath) Management Company Limited | Households | 1989 |
| Revenergy Limited | Energy | 2018 |
| Revival Landscaping Ltd | Administrative & support | 2025 |
| Revival Timber Sash Windows Ltd | Construction | 2022 |
| Revival-Wiltshire Rape and Sexual Abuse Centre | Health & social care | 2003 |
| Reviverate Limited | Real estate | 2024 |
| Reviverate Rents Limited | Real estate | 2024 |
| Revolution Arts Limited | Arts & recreation | 2011 |
| Revolution Education Limited | Education | 1996 |
| Revolver Therapeutics Limited | Professional & scientific | 2023 |
| Revorec Recruitment Solutions Limited | Administrative & support | 2018 |
| Reward and Development Limited | Professional & scientific | 2011 |
| Rexbell Limited | Professional & scientific | 1982 |
| Rexhound Ltd | Financial services | 2024 |
| Reybridge Capital Limited | Financial services | 2017 |
| Reynolds Medical Ltd | Health & social care | 2011 |
| Rgcc Estates UK Limited | Real estate | 2019 |
| RH Containers Limited | Transport & logistics | 2023 |
| RH Ventures (Bath) Limited | Financial services | 2026 |
| Rhandir Properties Limited | Real estate | 2001 |
| Rheo Ltd | Financial services | 2024 |
| Rhiannon Ransome Limited | Arts & recreation | 2012 |
| Rhino of Bath Ltd | Construction | 2018 |
| Rhodes Architects LLP | | 2022 |
| Rhombus Studio Ltd | Professional & scientific | 2018 |
| RHP Property Ltd | Real estate | 2026 |
| Rhythms of Grace Ltd | Wholesale & retail | 2026 |
| RI Property Services Ltd | Professional & scientific | 2024 |
| Rich Stapleton Limited | Professional & scientific | 2017 |
| Rich Tyers Studios Ltd | Professional & scientific | 2022 |
| Richard Banks & Co Ltd | Wholesale & retail | 2010 |
| Richard Bell Consulting Limited | Professional & scientific | 2024 |
| Richard Cookson Media Limited | Information & communication | 2017 |
| Richard Cornick Cyclone Racing Ltd | Wholesale & retail | 2015 |
| Richard Heath Investments Limited | Professional & scientific | 2008 |
| Richard Henley Plumbing & Heating Services Ltd | Construction | 2008 |
| Richard Holding Limited | Health & social care | 2010 |
| Richard Kollek Consultancy Ltd | Professional & scientific | 2026 |
| Richard Mansfield Cardiology Ltd | Health & social care | 2016 |
| Richard Pope and Associates Ltd | Professional & scientific | 2018 |
| Richard Waddington Development Consulting Ltd | Professional & scientific | 2022 |
| Richard Wheatley Partners Limited | Manufacturing | 2013 |
| Richard Wood Limited | Extraterritorial | 2009 |
| Richardson Studio Ltd | Other services | 2013 |
| Richardson Swift Audit Limited | Professional & scientific | 2018 |
| Richardson Swift Estate Services Limited | Professional & scientific | 2024 |
| Richardson Swift Holdings Limited | Financial services | 2024 |
| Richardson Swift Ltd | Professional & scientific | 2009 |
| Richcraft VOC Limited | Arts & recreation | 2022 |
| Richmond Company 222 Limited | Hospitality | 2008 |
| Richmond House Consultancy Ltd | Information & communication | 2021 |
| Richpicz Limited | Administrative & support | 2015 |
| Ridan IP Limited | Professional & scientific | 2026 |
| Ridge Capital Property Management Ltd | Real estate | 2026 |
| Ridgemill Properties Ltd | Real estate | 2019 |
| Ridgeway Ventures LLP | | 2007 |
| Right at Your Feet Flooring Limited | Wholesale & retail | 2000 |
| Rightoption Property Management Limited | Households | 1991 |
| Riley Upholsterers Limited | Other services | 2003 |
| Ripcord Limited | Arts & recreation | 2024 |
| Ripe Catering Ltd | Hospitality | 2021 |
| Ripple Effect International | Agriculture & fishing | 1988 |
| Ripple Effect Trading Limited | Administrative & support | 2021 |
| Rise and Reach Limited | Other services | 2026 |
| Rise Electrical Services Ltd | Construction | 2025 |
| Riseberry Limited | Other services | 2019 |
| Rising Star Ventures Ltd | Transport & logistics | 2025 |
| Rising Tide Brazilian JIU Jitsu Ltd | Education | 2022 |
| Risk Artificial Intelligence Development and Research Ltd | Information & communication | 2024 |
| Risk Reasoning Limited | Information & communication | 2003 |
| River Adventures Limited | Transport & logistics | 2015 |
| Rivers House Management Limited | Real estate | 1996 |
| Riverside Court, Bath (Management Company) Limited | Administrative & support | 2004 |
| Riverside House Management (Bath) Limited | Extraterritorial | 2002 |