| Riverside Nursery Bath Limited | Education | 2016 |
| RJ Electrical (Bath) Limited | Construction | 2013 |
| RJ Services (Bath) Ltd | Construction | 2021 |
| RJA Whitehouse Enterprises Ltd | Real estate | 2024 |
| RJS Medical Limited | Health & social care | 2011 |
| RL Coggins Ltd | Professional & scientific | 2025 |
| RL8 Property Limited | Real estate | 2025 |
| RMH Brickwork & Stonemasonry Limited | Construction | 2003 |
| Rmmp Limited | Financial services | 2014 |
| RND Games Ltd | Information & communication | 2025 |
| RNT Financial Solutions Limited | Professional & scientific | 2024 |
| RO Projects Interior Design Limited | Professional & scientific | 2023 |
| Road Green Investments Limited | Financial services | 2022 |
| Roan Antelope Consulting Limited | Professional & scientific | 2018 |
| Roasted Lemon Ltd | Hospitality | 2020 |
| ROB Matson Consultancy Limited | Financial services | 2016 |
| Robert and Watson Ltd | Administrative & support | 2024 |
| Robert Frederick Limited | Wholesale & retail | 1991 |
| Robert Grace Limited | Construction | 2003 |
| Roberton Advisory Ltd | Real estate | 2026 |
| Roberts (Bath) Limited | Wholesale & retail | 1981 |
| Robinson's Building Services Limited | Other services | 2015 |
| Robinson+ Limited | Professional & scientific | 2019 |
| Robson Contract Services Limited | Professional & scientific | 2018 |
| Robson Taylor Independent Financial Advisers Ltd | Professional & scientific | 1994 |
| Robyn's Yoga Ltd | Arts & recreation | 2024 |
| Rock OUT Baby Ltd | Education | 2025 |
| Rockbottom Recordings Ltd | Information & communication | 2020 |
| Rocke Associates Limited | Professional & scientific | 2014 |
| Rockford Business Management Limited | Professional & scientific | 2011 |
| Rockliffe Road Management Company Limited | Households | 2013 |
| Rockpool Limited | Information & communication | 2019 |
| Rockstone Compliance Limited | Administrative & support | 2015 |
| Rockwater Creative Ltd | Professional & scientific | 2025 |
| Rococo of Bath Limited | Hospitality | 2017 |
| ROD Rainey and Associates Limited | Professional & scientific | 2024 |
| Rodark Studios Ltd | Information & communication | 2023 |
| Rodden Road Cars Holdings Ltd | Financial services | 2023 |
| Rodden Road Cars Ltd | Wholesale & retail | 2005 |
| Rodjohns Ltd | Real estate | 2019 |
| Rodpod Swimwear Ltd | Manufacturing | 2013 |
| Roger Baer EYE Surgery Ltd | Health & social care | 2013 |
| Rokana Records Limited | Arts & recreation | 2017 |
| Roland Creese Limited | Real estate | 2003 |
| Rollquicker Ltd | Wholesale & retail | 2023 |
| Rolls Properties Limited | Real estate | 2025 |
| Romaine Trading Consultants Ltd | Professional & scientific | 2020 |
| Roman Bath View Ltd | Real estate | 2023 |
| Roman City Lets Limited | Real estate | 2025 |
| Roman Contracts (Bath) Limited | Transport & logistics | 2018 |
| Roman Fitness Ltd | Administrative & support | 2019 |
| Roman Glass Holdings Limited | Financial services | 2019 |
| Roman Properties Bristol Limited | Extraterritorial | 2011 |
| Roman Removals Bath Ltd | Transport & logistics | 2022 |
| Roman Tours (Bath) Ltd | Transport & logistics | 2019 |
| Romanian Shop Ltd | Wholesale & retail | 2023 |
| Romanus Recruitment Ltd | Administrative & support | 2015 |
| Romar Homes Limited | Real estate | 2002 |
| Rome Midco Limited | Financial services | 2024 |
| Rome Topco Limited | Financial services | 2024 |
| Romulus General Partner Limited | Real estate | 2024 |
| Rooke Books Limited | Wholesale & retail | 2023 |
| Room - Creative Property Marketing Ltd | Professional & scientific | 2011 |
| Roomly Ltd | Real estate | 2022 |
| Roomytown Limited | Wholesale & retail | 2021 |
| Roosevelt Advisory Ltd | Professional & scientific | 2023 |
| Roosevelt Holdings Ltd | Extraterritorial | 2023 |
| Root Restaurants (Bath) Ltd | Hospitality | 2024 |
| Rooted Design and Build Ltd | Construction | 2023 |
| Ropa Cobbs Ltd | Professional & scientific | 2020 |
| Roper Management LLP | | 2011 |
| Roper Rhodes Limited | Wholesale & retail | 1981 |
| ROS Trading Company Limited | Health & social care | 2009 |
| Rosalind Fordyce Editorial Ltd | Professional & scientific | 2025 |
| Rosalind Ward Limited | Health & social care | 2013 |
| Roscoe Squared Consulting Limited | Information & communication | 2018 |
| Rose Accounts Limited | Professional & scientific | 2008 |
| Roseberry Road Studios CIC | Real estate | 2023 |
| Roseblade Limited | Real estate | 2025 |
| Rosebrook Land Limited | Real estate | 2001 |
| Roseland Close (Bath) Management Company Limited | Households | 2005 |
| Roseland Medical Limited | Other services | 2021 |
| Rosewell House LLP | | 2021 |
| Rosewood Properties (UK) Limited | Real estate | 2009 |
| Rosh Limited | Hospitality | 1983 |
| Rosie Marlow Property Limited | Real estate | 2021 |
| Rosie Nottage Garden Design Ltd | Administrative & support | 2011 |
| Ross Enterprises Ltd | Real estate | 2018 |
| Rossiters of Bath Limited | Wholesale & retail | 1971 |
| Rossmore Inns Limited | Hospitality | 2019 |
| Rotary Precision Instruments UK Limited | Manufacturing | 2011 |
| Rotodrain Ltd | Construction | 2017 |
| Rotork Americas Holdings Limited | Professional & scientific | 2019 |
| Rotork Analysis Limited | Professional & scientific | 1990 |
| Rotork Benevolent Support | Other services | 2020 |
| Rotork Cleaners Limited | Professional & scientific | 1981 |
| Rotork Control & Safety Limited | Manufacturing | 1978 |
| Rotork Controls Limited | Manufacturing | 1958 |
| Rotork Instruments Limited | Extraterritorial | 2000 |
| Rotork Nominees Limited | Professional & scientific | 1961 |