| Replenagise Ltd | Information & communication | 2026 |
| Republic Film Distribution Limited | Information & communication | 2018 |
| Requisite Property Limited | Real estate | 2020 |
| Requisite Solutions Ltd | Information & communication | 2010 |
| Resalvis Limited | Information & communication | 2016 |
| Resdac Systems Ltd. | Professional & scientific | 2013 |
| Research Retold Ltd | Professional & scientific | 2017 |
| Reservinn Ltd | Hospitality | 2019 |
| Reservoir Festival Ltd | Arts & recreation | 2023 |
| Reset Certification Scheme Limited | Extraterritorial | 2018 |
| Reset Compliance Systems Limited | Information & communication | 2008 |
| Reshape Accident Repair Centre Ltd | Wholesale & retail | 2024 |
| Resi Builders Limited | Construction | 2024 |
| Resicare Community Housing Ltd | Hospitality | 2024 |
| Resilience Provisions Ltd | Wholesale & retail | 2025 |
| Resilio Group Limited | Information & communication | 2025 |
| Resin Bound Solutions (Manchester) Ltd | Extraterritorial | 2018 |
| Resin Bound Solutions (Yorkshire) Ltd | Wholesale & retail | 2018 |
| Resolution Activities Ltd | Wholesale & retail | 2023 |
| Resolve IT Solutions Limited | Information & communication | 2006 |
| Resonate Property Limited | Real estate | 2016 |
| Resonate Property Management Limited | Real estate | 2022 |
| Resound Theatre Ltd | Arts & recreation | 2025 |
| Resource Indeed Limited | Administrative & support | 2023 |
| Respire Medical Supplies Limited | Wholesale & retail | 2017 |
| Respond Electrical Services Limited | Construction | 2017 |
| Responsive Holdings Ltd | Financial services | 2020 |
| Rest Harrow Fine Art Limited | Wholesale & retail | 2015 |
| Rest Housing Ltd | Hospitality | 2025 |
| Rest Mountains Ltd | Hospitality | 2024 |
| Restaino Properties Limited | Real estate | 2009 |
| Restaurant EL Greco Ltd | Administrative & support | 2025 |
| Restex Flooring Services Ltd | Administrative & support | 2019 |
| Restless Forest Productions Ltd | Arts & recreation | 2021 |
| Restopia Ltd | Hospitality | 2025 |
| Restoration Window Limited | Construction | 2020 |
| Restore C Group Limited | Construction | 2021 |
| Restore Health & Performance Limited | Other services | 2026 |
| Restore Hope Services Limited | Water & waste | 2026 |
| Restory Living Ltd | Hospitality | 2025 |
| Result Consultancy Limited | Administrative & support | 1999 |
| Results Hub International Limited | Other services | 2016 |
| Resume Healthcare Solutions Ltd | Health & social care | 2021 |
| Resét Hair Studio Ltd | Other services | 2025 |
| Retail Centre Ltd | Wholesale & retail | 2010 |
| Retaj Enterprise Limited | Wholesale & retail | 2019 |
| Retay Ltd | Wholesale & retail | 2024 |
| Retford Waste Limited | Water & waste | 2003 |
| Rethink Learning Ltd | Manufacturing | 2018 |
| Retirement Services Limited | Real estate | 1971 |
| Retreat and Rest Properties Ltd | Real estate | 2023 |
| Retreat Care Services Private Limited | Health & social care | 2025 |
| Retrigger Limited | Financial services | 2021 |
| Retro Bits N Bobbers Ltd | Wholesale & retail | 2013 |
| Retro Corner Custom Ltd | Manufacturing | 2014 |
| Retrofit Ready Ltd | Administrative & support | 2022 |
| Retrograde Music Limited | Information & communication | 2013 |
| Retusa Limited | Wholesale & retail | 2015 |
| Reuava Hospitality Limited | Extraterritorial | 2024 |
| Reuava Property Company Ltd | Real estate | 2025 |
| Reuben Computing Limited | Extraterritorial | 2009 |
| REVEAL360 Ltd | Information & communication | 2024 |
| Revelation Real Estate Limited | Real estate | 2024 |
| Revero Foods Limited | Financial services | 2004 |
| Revert Alloys and Metals Ltd | Other services | 2011 |
| Revert International Dmcc Ltd | Financial services | 2020 |
| Review Scout Ltd | Information & communication | 2026 |
| Revitafol Limited | Wholesale & retail | 2021 |
| Revitk Ltd | Professional & scientific | 2024 |
| Revitt Ltd | Information & communication | 2021 |
| Revival Gadgets Limited | Water & waste | 2026 |
| Revive & Rewild C.I.C. | Administrative & support | 2024 |
| Revive Clothing Sheff Limited | Wholesale & retail | 2025 |
| Revive Deals Ltd | Wholesale & retail | 2024 |
| Revive Hair Clinic Limited | Other services | 2026 |
| Revive Medicare Limited | Wholesale & retail | 2015 |
| Revlens Ltd | Information & communication | 2026 |
| Revline Cars Ltd | Wholesale & retail | 2025 |
| Revolight Medical Services Limited | Health & social care | 2015 |
| Revolution Building Services Limited | Construction | 2025 |
| Revolution Health Products Limited | Wholesale & retail | 2014 |
| Revolution Inc. Limited | Manufacturing | 2008 |
| Revolution IT Consultancy Limited | Information & communication | 2022 |
| Revolution Nine Limited | Administrative & support | 2011 |
| Revolution One Limited | Administrative & support | 2011 |
| Revolution Recruitment (Yorkshire) Ltd | Transport & logistics | 2020 |
| Revolution Rides Ltd | Wholesale & retail | 2022 |
| Revolution Studios Ltd | Education | 2015 |
| Revolutionizer Ltd | Information & communication | 2024 |
| Revolver AV Limited | Arts & recreation | 2006 |
| Revolver Motion Limited | Administrative & support | 2023 |
| Revolver Stock Limited | Administrative & support | 2009 |
| Revolyn Ltd | Information & communication | 2025 |
| Rewa Homes Ltd | Real estate | 2025 |
| Rewilders Limited | Professional & scientific | 2019 |
| Rewind TV Limited | Information & communication | 2018 |
| Rewonder Ltd. | Health & social care | 2016 |
| Rewonder Training Academy Limited | Education | 2018 |
| REX Electrical Services Limited | Construction | 2002 |
| REX Group Holdings Limited | Professional & scientific | 2000 |