| Ribin Ltd | Real estate | 2026 |
| Rica-Shay Ltd | Information & communication | 2014 |
| Rich Acoustic Solutions Ltd | Professional & scientific | 2024 |
| Richards Building Services South East Limited | Construction | 2019 |
| Richer Means Ltd | Education | 2025 |
| Richland Energy Technology Limited | Wholesale & retail | 2023 |
| Rick Apparel Co., Limited | Wholesale & retail | 2023 |
| Riddled Limited | Information & communication | 2025 |
| Ridgeback Construction Ltd | Construction | 2017 |
| Ridgecrest Trade Limited | Wholesale & retail | 2026 |
| Rigang (Binzhou) New Material Co., Ltd | Manufacturing | 2023 |
| Rigang Steel Group Co., Ltd | Manufacturing | 2023 |
| Right Good Records Limited | Information & communication | 2019 |
| Right Time Right Place Ltd | Professional & scientific | 2025 |
| Rightbest Limited | Real estate | 2006 |
| Ringlestone Solutions Limited | Financial services | 2016 |
| RIO Tinto (Shandong) Steel Group Co., Limited | Manufacturing | 2025 |
| Ripplesoup Ltd | Information & communication | 2018 |
| Riton Enterprise Limited | Manufacturing | 2019 |
| River Events Limited | Hospitality | 2022 |
| River Nadder Garage Limited | Wholesale & retail | 2025 |
| River Profiles Holdings Limited | Financial services | 2018 |
| River Profiles Limited | Administrative & support | 2009 |
| Riverdale Retreat Ltd | Hospitality | 2022 |
| Rivermead Inclusive Trust | Education | 2015 |
| Rivermead Solutions CIC | Education | 2017 |
| Riverside Boatyard Limited | Manufacturing | 2020 |
| Riverside Decorating Company Ltd | Construction | 2021 |
| Riverside Expresso Ltd | Hospitality | 2020 |
| Riverside Ridge Limited | Real estate | 2019 |
| Riverside Watches Ltd | Wholesale & retail | 2026 |
| Rivet Distillery Limited | Extraterritorial | 2015 |
| RJ Greenway Haulage Ltd | Transport & logistics | 2019 |
| RJ Jupiter Limited | Construction | 2019 |
| RJ MAT Limited | Professional & scientific | 2025 |
| RJA Asbestos Consultancy Limited | Professional & scientific | 2021 |
| RJB and SON Ltd | Transport & logistics | 2025 |
| RJH Services Ltd | Professional & scientific | 2023 |
| RK Haulier Ltd | Transport & logistics | 2021 |
| RKB Consultancy Ltd | Construction | 2017 |
| RKR (Kaler) Ltd | Manufacturing | 2023 |
| RKR (Kent) Ltd | Manufacturing | 2023 |
| RL Performance (Kent) Limited | Wholesale & retail | 2023 |
| RLA Management Limited | Construction | 2023 |
| RLD Group Ltd | Transport & logistics | 2020 |
| RLH Industrial Services Ltd | Construction | 2015 |
| Rltg Holdings Ltd | Professional & scientific | 2021 |
| RM Services (Kent) Limited | Construction | 2017 |
| Rmet | Education | 2011 |
| Rmgjatu Ltd | Health & social care | 2025 |
| RMP Brickwork Ltd | Construction | 2026 |
| RMS Plumbing Ltd | Construction | 2019 |
| RMT Property Group Ltd | Real estate | 2024 |
| RMY Consulting Services Limited | Professional & scientific | 2025 |
| RN Gill Construction Limited | Construction | 2022 |
| Road Hero Limited | Extraterritorial | 2021 |
| Roam Driver Coaching Ltd | Other services | 2024 |
| Robert Fletcher Advisers Limited | Extraterritorial | 2016 |
| Robert Frith (Opticians) Limited | Health & social care | 1973 |
| Robert Frith Four Limited | Health & social care | 2015 |
| Robert Frith One Limited | Health & social care | 2016 |
| Robert Frith Opticians (Twickenham) Limited | Health & social care | 1991 |
| Robert Frith Optometrists (Blandford) Limited | Health & social care | 2004 |
| Robert Frith Optometrists (Chard) Limited | Health & social care | 2003 |
| Robert Frith Optometrists (Yeovil) Limited | Health & social care | 2005 |
| Robert Frith Optometrists Limited | Health & social care | 1993 |
| Robert Frith Services Limited | Professional & scientific | 2000 |
| Robert Frith Three Limited | Health & social care | 2016 |
| Robert Frith Two Limited | Health & social care | 2016 |
| Robert Philbrook Consultant Ltd | Administrative & support | 2017 |
| Roberto's Auto Care Ltd | Administrative & support | 2017 |
| Roberto's Car Wash Ltd | Manufacturing | 2015 |
| Rochford Interiors Ltd | Construction | 2017 |
| Rock and Cleft Property Company Ltd | Construction | 2026 |
| Rock Building Projex Ltd | Construction | 2017 |
| Rockhill Motors Ltd | Wholesale & retail | 2024 |
| Rockman Restoration Ltd | Construction | 2019 |
| Rocky Bars Ltd | Hospitality | 2021 |
| Roddie Frames Limited | Manufacturing | 2025 |
| Rodwillow Property Co. Ltd | Real estate | 1997 |
| Rogate Properties (ST Thomas's) Limited | Construction | 2015 |
| Rogate Properties Middle Street Ltd | Construction | 2024 |
| Roicare Limited | Health & social care | 2023 |
| ROK Shop Ltd | Wholesale & retail | 2023 |
| Rolfedesign Ltd | Professional & scientific | 2025 |
| Rollwood Limited | Real estate | 2014 |
| Roman Distribution Ltd | Transport & logistics | 2025 |
| Rombo Cleaning Ltd | Administrative & support | 2025 |
| Rombo Estates Ltd | Real estate | 2023 |
| Ronkia Limited | Administrative & support | 2024 |
| Ronnie Interior Limited | Construction | 2016 |
| Ronnie Interiors Services Ltd | Administrative & support | 2020 |
| Roof Quik Ltd | Construction | 2025 |
| ROOFINGPROPERTYMAINTENANCE25GROUP Limited | Construction | 2025 |
| Roog Ventures UK Limited | Construction | 2016 |
| Rook & Wren Limited | Professional & scientific | 2020 |
| Roovishi Limited | Information & communication | 2025 |
| Rope Access LDN Ltd | Construction | 2025 |
| ROPE2RAIL Limited | Construction | 2025 |
| Rory Limited | Wholesale & retail | 2022 |