| Roel Nunez Consultancy Ltd | Construction | 2025 |
| Roevale Freehold Limited | Households | 2010 |
| Roger Bennett Face to Face Construction Limited | Construction | 2015 |
| Roger Helm Medicolegal Limited | Administrative & support | 2018 |
| Roger James Lyon Limited | Other services | 2023 |
| Roger N Tate Fashions Limited | Wholesale & retail | 1967 |
| Roger Preston & Partners Limited | Professional & scientific | 1992 |
| Roger Preston Group Limited | Construction | 2008 |
| Roger Quickfall Limited | Professional & scientific | 2015 |
| Roger Tate (Fashions) Limited | Wholesale & retail | 2008 |
| Rogerthorpe Manor Hotel Limited | Professional & scientific | 2009 |
| Rogue Artist Creations Limited | Arts & recreation | 2015 |
| Rogue Raffles Ltd | Arts & recreation | 2025 |
| Rohan Electrical & Mechanical Limited | Construction | 2020 |
| Rohan Fire & Security Limited | Construction | 2023 |
| Rohannah A&C Property Management Limited | Hospitality | 2024 |
| ROI Marketing Limited | Professional & scientific | 2010 |
| Roisin BAN Limited | Professional & scientific | 2013 |
| ROJ Production Ltd | Hospitality | 2020 |
| Rojo Light Therapy UK Ltd | Health & social care | 2026 |
| ROK Explosives Ltd | Wholesale & retail | 2014 |
| ROK Iron Consulting Ltd | Administrative & support | 2023 |
| Roka Retail Ltd | Wholesale & retail | 2013 |
| Rokya Limited | Wholesale & retail | 2021 |
| Rolands Harrogate Ltd | Hospitality | 2021 |
| Rolands Leeds Ltd | Hospitality | 2019 |
| Role Model Clothing Limited | Manufacturing | 2001 |
| Role Model Corporate Limited | Administrative & support | 2012 |
| Role Model Ltd | Extraterritorial | 2026 |
| Roleka Group Ltd | Hospitality | 2025 |
| Roleka Ltd | Hospitality | 2017 |
| Roleka Property Ltd | Real estate | 2025 |
| Roles International Limited | Education | 2009 |
| Rolf & Bonnie Smaldon Ltd | Administrative & support | 2012 |
| Rolfe Carpets Limited | Extraterritorial | 2010 |
| Rolka Motors Ltd | Wholesale & retail | 2022 |
| Roll With IT Ltd | Arts & recreation | 2020 |
| Rollbridge Ltd | Construction | 2026 |
| Rollem (Syndicate 4) Ltd | Information & communication | 2019 |
| Rollem LLP | | 2005 |
| Rollem Production Company Limited | Information & communication | 1993 |
| Rollem Script Co Limited | Information & communication | 1997 |
| Roller Girl Gang C.I.C. | Wholesale & retail | 2018 |
| Rolling Center Holdings Limited | Financial services | 2024 |
| Rolling Center Limited | Wholesale & retail | 2003 |
| Rolling Centre Limited | Manufacturing | 2004 |
| Rolling Social Events Ltd | Arts & recreation | 2019 |
| Rollingshutter Limited | Professional & scientific | 2023 |
| Rollins Corporate Productions Ltd | Other services | 2024 |
| Rollins Development Group Limited | Professional & scientific | 2022 |
| Rollinson Properties Limited | Financial services | 2017 |
| Rollinson Safeway Holdings Limited | Financial services | 2017 |
| Rollinson Safeway Limited | Transport & logistics | 1975 |
| Roly Holdings Ltd | Wholesale & retail | 2018 |
| Rolyat GHR Limited | Financial services | 2023 |
| Roma Finance Limited | Financial services | 1977 |
| Roma Leeds Ltd | Hospitality | 2024 |
| Roma Roots Community CIC | Education | 2025 |
| Roma Stone Company Limited | Extraterritorial | 2007 |
| Romajor Ltd | Professional & scientific | 2022 |
| Roman and Russia Security Limited | Health & social care | 2022 |
| Roman Court Management Co. Limited | Real estate | 1983 |
| Roman Global Limited | Wholesale & retail | 2019 |
| Roman Lets & Property Management Limited | Real estate | 2006 |
| Roman Roofing Leeds Ltd | Construction | 2026 |
| Romana Holdings Limited | Professional & scientific | 2009 |
| Romana Properties Limited | Real estate | 2003 |
| Romana Tile Company Limited | Extraterritorial | 2003 |
| Romanas Transport Ltd | Transport & logistics | 2017 |
| Romani Arnold Equine Ltd | Agriculture & fishing | 2026 |
| Romanobusiness Ltd | Construction | 2022 |
| Romans Investments Ltd | Real estate | 2025 |
| Romantic Hair and Beauty Salon Limited | Wholesale & retail | 2023 |
| Romar Packaging Limited | Manufacturing | 1982 |
| Romasimran Limited | Real estate | 2025 |
| Rombald Group Ltd | Information & communication | 2013 |
| Rombold Grange Management Company Limited | Households | 2004 |
| Romcem Limited | Financial services | 2017 |
| Rome Recovery Services Ltd | Administrative & support | 2021 |
| Romech Engineering Ltd | Professional & scientific | 2018 |
| Romeo.Voicu Ltd | Transport & logistics | 2017 |
| Romero Insurance Brokers Limited | Financial services | 1997 |
| Romily Limited | Construction | 2025 |
| Romisale FS Limited | Financial services | 2024 |
| Romm Industries Ltd | Information & communication | 2023 |
| Rompharma Limited | Health & social care | 2019 |
| Romram Ltd | Transport & logistics | 2017 |
| Romroj UK Limited | Real estate | 2020 |
| Romulus Trans Ltd | Transport & logistics | 2015 |
| RON Smith Turf Supplies Ltd | Wholesale & retail | 2025 |
| RON White Trade Cars Limited | Wholesale & retail | 2017 |
| Ronak Patani Ltd | Construction | 2023 |
| Ronaldforbes Limited | Professional & scientific | 2012 |
| Ronaldo’S LDT Ltd | Transport & logistics | 2025 |
| Roncey Limited | Administrative & support | 1995 |
| Rondel Consulting Ltd | Information & communication | 2021 |
| Ronis Perdios Ltd | Professional & scientific | 2020 |
| Ronmar Investments Limited | Real estate | 1962 |
| Ronson Renewable Energy Consultants Ltd | Professional & scientific | 2012 |
| Roobear Ltd | Professional & scientific | 2018 |