| Riviera Multimedia Limited | Wholesale & retail | 2001 |
| RJB Security & Electrical Limited | Manufacturing | 2020 |
| RJE Accountants Ltd | Professional & scientific | 2024 |
| RJG Contracting Limited | Construction | 2025 |
| RJN Developments Limited | Real estate | 2023 |
| RJN Properties & Letting Limited | Real estate | 2024 |
| Rjpm Limited | Other services | 2015 |
| RJS Education Ltd | Education | 2022 |
| RJT Design & Build Limited | Construction | 2005 |
| RKB Mechanical, Electrical & Renewables Group Limited | Administrative & support | 2017 |
| RM Frobisher (1986) Ltd. | Manufacturing | 2015 |
| RM Mobile HGV Repairs Limited | Wholesale & retail | 2003 |
| RM Properties Yorkshire Ltd | Real estate | 2025 |
| RMB Transport (Yorkshire) Ltd | Transport & logistics | 2024 |
| RMC Limited | Hospitality | 2024 |
| RMF Luxcar London Ltd | Wholesale & retail | 2025 |
| RMF Luxcar Ltd | Wholesale & retail | 2019 |
| RMS & Sons Ltd | Hospitality | 2023 |
| RNC Site Services Limited | Construction | 2026 |
| RNR Clearance Ltd | Water & waste | 2023 |
| RO CON SOL Ltd | Construction | 2026 |
| Roachy Ltd | Professional & scientific | 2017 |
| Road and Trials Limited | Wholesale & retail | 2011 |
| Road to Wellness CIC | Health & social care | 2025 |
| ROAD2RECRUIT Ltd | Education | 2025 |
| Roadbase Ltd | Transport & logistics | 2025 |
| ROB Hill Property Limited | Construction | 2016 |
| ROB Royd Farm Shop Limited | Agriculture & fishing | 2007 |
| ROB Royd Limited | Manufacturing | 2022 |
| ROB Royd Properties Limited | Real estate | 2011 |
| ROB Spedding Limited | Professional & scientific | 2022 |
| ROB Transport Ltd | Transport & logistics | 2025 |
| Robert and Kelly Stewart Ltd | Hospitality | 2015 |
| Robert Anthony Fleming Limited | Financial services | 2017 |
| Robert Cardwell Limited | Construction | 2003 |
| Robert M Group Ltd | Manufacturing | 2018 |
| Robert Wielogorski Limited | Transport & logistics | 2019 |
| Roberts Mccarron Ltd | Wholesale & retail | 2017 |
| Roberts Mccarron Properties Ltd | Real estate | 2025 |
| Roberts Memorials Limited | Manufacturing | 2001 |
| Robin Tapp Limited | Wholesale & retail | 2021 |
| Robinson Court Properties Limited | Construction | 2001 |
| Robinson's Joinery & Renovation Limited | Construction | 2025 |
| Robo D Ltd | Transport & logistics | 2022 |
| ROC Developments (UK) Limited | Construction | 2012 |
| Rocco Wall Estates Limited | Real estate | 2022 |
| Rock Science Services Ltd | Professional & scientific | 2024 |
| Rockingham Centre Hoyland CIC | Arts & recreation | 2013 |
| Rockingham Fold Management Ltd | Households | 2024 |
| Rockleon Depot Barnsley Limited | Wholesale & retail | 2018 |
| Rockley Old Hall Maintenance Limited | Households | 1976 |
| Rockley Property Ltd | Real estate | 2017 |
| Rodgers Site Installatons Limited | Construction | 2014 |
| Rodriguez Property Investments Limited | Real estate | 2025 |
| Roebuck Financial Planning Ltd | Financial services | 2018 |
| Roger White Properties Ltd | Real estate | 2019 |
| Rohab Limited | Wholesale & retail | 2024 |
| ROK Site Services Limited | Construction | 2016 |
| Rola Trans Ltd | Transport & logistics | 2023 |
| Rollem EOT Limited | Financial services | 2023 |
| Rollem Group Limited | Professional & scientific | 2016 |
| Rollem Patent Products Limited | Manufacturing | 1942 |
| Rolley Ltd | Information & communication | 2020 |
| Rollin Properties Limited | Real estate | 2025 |
| Rolling People Agency Ltd | Wholesale & retail | 2011 |
| Roman Inns Limited | Hospitality | 2023 |
| Romanos Pizzeria Limited | Hospitality | 2025 |
| Romdata Cabling Ltd | Information & communication | 2020 |
| Romero Communities | Administrative & support | 2012 |
| Rona Hair and Beauty Ltd | Other services | 2025 |
| Ronited Services Ltd | Wholesale & retail | 2023 |
| Roof Safety Co Limited | Construction | 2019 |
| Roofcare Yorkshire Limited | Construction | 2017 |
| Roofdec Holdings Limited | Professional & scientific | 2016 |
| Roofing & Cladding Supplies Limited | Construction | 2003 |
| Roofserve Yorkshire Limited | Construction | 2022 |
| Roomez Limited | Real estate | 2026 |
| Roots-S-S Ltd | Wholesale & retail | 2019 |
| Roove Limited | Other services | 2025 |
| Roo’S Rentals Ltd | Real estate | 2025 |
| Rosa (2012) Limited | Administrative & support | 2012 |
| Rosa Holdings Limited | Transport & logistics | 2001 |
| Rosa TM Ltd | Wholesale & retail | 2018 |
| Rosa Vale Developments Ltd | Construction | 2026 |
| Rose Brook (Yorkshire) Limited | Wholesale & retail | 2015 |
| Rose Nails VN Ltd | Other services | 2021 |
| Rose Villa Investments Limited | Real estate | 2025 |
| Rosebrooke Carpentry Ltd | Construction | 2012 |
| Rosehill Care Home Ltd | Health & social care | 2022 |
| Rosemary Douglas Events Limited | Administrative & support | 2014 |
| Rosemount Cottage Consultants Limited | Administrative & support | 2017 |
| Ross and Coates Property Development Ltd | Construction | 2021 |
| Rossoft Ltd | Information & communication | 2016 |
| Rotherham Floors & Doors Ltd | Construction | 2024 |
| Rotherham Logistics Ltd | Transport & logistics | 2002 |
| Rotherham Padel Club Ltd | Arts & recreation | 2025 |
| Rotherham Self Storage Containers Limited | Transport & logistics | 2016 |
| Rotherham Tile Centre Limited | Wholesale & retail | 2022 |
| Roughbirchworth Management Company Limited | Households | 2022 |
| Round Green Farm Meats Ltd | Wholesale & retail | 2019 |