| Rmsproperty Ltd | Real estate | 2024 |
| RMT Grounds Maintenance Ltd | Administrative & support | 2024 |
| Rmtk Medical Services Ltd | Health & social care | 2025 |
| Rmustdrive Ltd | Transport & logistics | 2024 |
| RN Trustees Limited | Financial services | 2017 |
| RN Trustees NO 2 Limited | Administrative & support | 2017 |
| RNB Developments Ltd | Real estate | 2019 |
| RND Technologies Ltd | Manufacturing | 2025 |
| RNE Property Solutions Limited | Construction | 2024 |
| RNN Group Ltd | Education | 2015 |
| RNR Foodservice Solutions Ltd | Professional & scientific | 2011 |
| RNS Real Estate Ltd | Real estate | 2021 |
| RNW Restoration Limited | Construction | 2007 |
| RO RO RI Ltd | Hospitality | 2023 |
| RO2 NG UK Limited | Real estate | 2025 |
| Road Angel Ltd | Extraterritorial | 2023 |
| Road Flash Limited | Transport & logistics | 2020 |
| Road Runners Despatch Limited | Transport & logistics | 1990 |
| Road Runners Express Logistics Ltd | Transport & logistics | 2026 |
| Roadgas Limited | Manufacturing | 2007 |
| Roadstar Autos Limited | Wholesale & retail | 2020 |
| Roadway Resurfacing Ltd | Construction | 2025 |
| Roam Media Limited | Information & communication | 2023 |
| Roayal Services Ltd | Wholesale & retail | 2024 |
| ROB Bevan Ltd | Professional & scientific | 2022 |
| ROB Cooper Consulting Ltd | Construction | 2015 |
| ROB Dixon Creative Ltd | Professional & scientific | 2026 |
| ROB Price Process Solutions Limited | Professional & scientific | 2013 |
| ROB Sharp Plant Hire Limited | Administrative & support | 2002 |
| Rob's Logistic Ltd | Transport & logistics | 2025 |
| Robayna Ltd | Professional & scientific | 2024 |
| Robbins and Thompson Ltd | Information & communication | 2016 |
| Robbo Rail Ltd | Construction | 2014 |
| Robbz Hood Limited | Other services | 2017 |
| Robec Properties LLP | | 2009 |
| Robell Engineering Limited | Manufacturing | 2012 |
| Robert Beacham Consultancy Limited | Professional & scientific | 2021 |
| Robert DE Fresnes Music Publishing Limited | Information & communication | 2008 |
| Robert Deans Consulting Limited | Other services | 2019 |
| Robert Ellis & Co (Arnold) Ltd | Real estate | 2021 |
| Robert Ellis and Company Limited | Real estate | 2002 |
| Robert Fletcher and SON Limited | Professional & scientific | 1958 |
| Robert Longwood Ltd | Wholesale & retail | 2024 |
| Robert M Sansom Developments Limited | Real estate | 2006 |
| Robert M. Sansom Plant Limited | Wholesale & retail | 1977 |
| Robert Madden Building Limited | Construction | 2003 |
| Robert Marshall Electrical Services Ltd | Construction | 2014 |
| Robert Nuttall Funeral Service Limited | Extraterritorial | 2005 |
| Robert Owen Marine Limited | Manufacturing | 2014 |
| Robert Spray Insurance Services Limited | Financial services | 2003 |
| Robert Straw Limited | Health & social care | 2012 |
| Roberto Rossellini Limited | Wholesale & retail | 2004 |
| Roberts Accounting Ltd | Professional & scientific | 2016 |
| Roberts Contracting Ltd | Construction | 2013 |
| Roberts Home Surveys Limited | Professional & scientific | 2019 |
| Roberts Homes and Property Limited | Real estate | 2018 |
| Roberts Solutions Ltd | Information & communication | 2024 |
| Robertson & Sons Property Limited | Real estate | 2023 |
| Robertson Ceiling Contractors Limited | Construction | 2002 |
| Robertson Holding Group Limited | Financial services | 2023 |
| Robertson Recruitment Services Limited | Administrative & support | 2009 |
| Robertson-Staples Consultancy Ltd | Professional & scientific | 2025 |
| Robin Hood Car Parts Ltd | Wholesale & retail | 2025 |
| Robin Hood Carpets Ltd | Wholesale & retail | 2019 |
| Robin Hood Claims Ltd | Professional & scientific | 2024 |
| Robin Hood Enterprise Ltd | Wholesale & retail | 2022 |
| Robin Hood Folk Festival Limited | Arts & recreation | 2014 |
| Robin Hood GUN Club Limited | Extraterritorial | 2024 |
| Robin Hood Gymnastics Centre C.I.C. | Arts & recreation | 2014 |
| Robin Hood Gymnastics Club Ltd | Arts & recreation | 2023 |
| Robin Hood Heating Ltd | Construction | 2024 |
| Robin Hood Mortgages Ltd | Financial services | 2018 |
| Robin Hood Property Limited | Real estate | 2019 |
| Robin Hood Scaffolding Ltd | Construction | 2021 |
| Robin Hood Store Ltd | Wholesale & retail | 2013 |
| Robin Hood Tyres & Mechanical Services Limited | Administrative & support | 2010 |
| Robin Hood Tyres & Servicing Centre Limited | Wholesale & retail | 2024 |
| Robin Hood's Little Outlaws Ltd | Arts & recreation | 2013 |
| Robin's Textiles Limited | Wholesale & retail | 2002 |
| Robinhood Blinds Ltd | Wholesale & retail | 2023 |
| Robinhood Couriers Ltd | Transport & logistics | 2026 |
| Robinhood Links Ltd | Administrative & support | 2018 |
| Robins Estates (Nottingham) Limited | Real estate | 2015 |
| Robins Estates Limited | Real estate | 2013 |
| Robins Investments Limited | Real estate | 2003 |
| Robinson Ecom Ltd | Other services | 2025 |
| Robinson Estate Holdings Ltd | Other services | 2021 |
| Robinson Safety Management Ltd | Professional & scientific | 2025 |
| Robinsons Court Management Company Limited | Households | 2005 |
| Robinsons Vehicle Movements Ltd | Wholesale & retail | 2023 |
| Robles Payments Limited | Financial services | 2025 |
| Robley Holdings Limited | Financial services | 2024 |
| Robson Build Limited | Professional & scientific | 2016 |
| Robson Cave & Associates Limited | Financial services | 1979 |
| Robson Homes Limited | Real estate | 2010 |
| Robson Hospitality Ltd | Hospitality | 2024 |
| Robson Mergers Limited | Professional & scientific | 2018 |
| Robson Money Ltd | Financial services | 2022 |
| Robust Arts Ltd | Information & communication | 2025 |
| Robyn's Nest Limited | Health & social care | 2025 |