| Retford Trade LP | | 2014 |
| Retirement Planner Ltd | Financial services | 2013 |
| Retiva Services LP | | 2014 |
| Retro Gradual LP | | 2012 |
| Retro Ventures Holding Ltd | Financial services | 2025 |
| Retromixer Ltd. | Manufacturing | 2015 |
| Retronix Ltd. | Manufacturing | 1991 |
| Retrust Impex LP | | 2015 |
| Retson Ventures LP | | 2015 |
| Return Tax Online Ltd | Professional & scientific | 2019 |
| Rety Ltd | Wholesale & retail | 2026 |
| Revellia Limited | Manufacturing | 2025 |
| Revelwood (Europe) Limited | Information & communication | 2024 |
| Revent Holdings LP | | 2016 |
| Revere Property Group Limited | Real estate | 2020 |
| Revere Scotland Ltd. | Construction | 2019 |
| Reverte Trade LP | | 2017 |
| Revierend Estate LP | | 2015 |
| Reviresco Operations Limited | Hospitality | 2026 |
| Revitalize Therapies Ltd | Health & social care | 2018 |
| Revitano Sales LP | | 2011 |
| Revival Radio Limited | Information & communication | 1995 |
| Revivalresidences LP | | 2022 |
| Revive Beauty Salons Ltd | Other services | 2008 |
| Revive Entertainment Ltd | Manufacturing | 2025 |
| Revive UR Soul Ltd | Wholesale & retail | 2025 |
| Revive Yoga Breaks Limited | Arts & recreation | 2017 |
| Revivre Limited | Manufacturing | 2021 |
| Revlab Limited | Financial services | 2017 |
| Revlounge Limited | Arts & recreation | 2025 |
| Revna Actuarial Limited | Financial services | 2022 |
| Revola Source LP | | 2016 |
| Revolution Gaming LP | | 2014 |
| Revolver (Edinburgh) Ltd. | Information & communication | 2010 |
| Revops Blueprint Ltd | Professional & scientific | 2024 |
| Revops GTM Limited | Professional & scientific | 2025 |
| Revotel Limited | Administrative & support | 2022 |
| Revtex Trading LP | | 2017 |
| Reward Consulting LP | | 2013 |
| Rewild Your Life CIC | Education | 2026 |
| REX Holdings Partners | | 1999 |
| REX Omar Ltd | Wholesale & retail | 2025 |
| Rexcorp Group L.P. | | 2009 |
| Rexelon Industries LP | | 2015 |
| Rexion Limited | Information & communication | 2024 |
| Rexmile Trade LP | | 2014 |
| Rexpert Solutions Ltd | Administrative & support | 2025 |
| Rexton Solutions LP | | 2014 |
| Rextrade Management L.P. | | 2011 |
| Rexwell Investments L.P. | | 2012 |
| Rexy Holdings LP | | 2016 |
| Reyborn Limited | Hospitality | 2018 |
| Reyes Transport Ltd | Transport & logistics | 2026 |
| Reynard Nominees Limited | Professional & scientific | 1990 |
| Reynold 123 Limited | Hospitality | 2012 |
| Reynolds & Sons Treecare Ltd | Agriculture & fishing | 2022 |
| Reysam Company Limited | Real estate | 2025 |
| Reyton Trade LP | | 2016 |
| Reytu LP | | 2025 |
| Rezerv Capital LP | | 2013 |
| Rf.Com Limited | Information & communication | 2000 |
| RFH Solutions Ltd | Administrative & support | 2025 |
| RFP Hair Limited | Other services | 2019 |
| RFS Developments Ltd | Real estate | 2025 |
| RFV Partners | | 2003 |
| RG Construction (Scotland) Limited | Construction | 2021 |
| RG Developments(Ballyhanedin) Ltd | Construction | 2018 |
| RG Wire & Cable Limited | Wholesale & retail | 2006 |
| RGB Contracts Ltd | Construction | 2018 |
| RGC Technology Ltd | Information & communication | 2025 |
| Rgdp LLP | | 2018 |
| RGG Services Ltd | Information & communication | 2022 |
| RGH Lathro Limited | Administrative & support | 2023 |
| RGI Fund Management Limited | Financial services | 1990 |
| Rgip Limited | Real estate | 2022 |
| RGK Group LP | | 2015 |
| RGM Consulting Limited | Professional & scientific | 2012 |
| RGR Group Ltd | Arts & recreation | 2019 |
| RGU Ventures Investment Fund, L.P. | | 2009 |
| RH Consulting Ltd | Professional & scientific | 2025 |
| RH Edinburgh Limited | Hospitality | 2024 |
| RH Fortuna Holding Limited | Financial services | 2026 |
| RH Investment Management Ltd | Extraterritorial | 2012 |
| RH Medical Group Ltd | Health & social care | 2025 |
| RH Plastering Solutions Ltd | Construction | 2022 |
| RH Pro Ltd | Wholesale & retail | 2024 |
| RHA 2016 Limited | Professional & scientific | 2016 |
| RHB Consultancy Services Limited | Professional & scientific | 2007 |
| Rhcse Company Ltd | Hospitality | 2026 |
| Rhema Property Management Ltd | Construction | 2023 |
| Rhenetra LLP | | 2019 |
| Rheumatology Intime Ltd | Health & social care | 2015 |
| Rhinestone Cowboys 21 Ltd | Wholesale & retail | 2021 |
| Rhino Competitions Ltd | Arts & recreation | 2026 |
| Rhizocore Technologies Ltd | Agriculture & fishing | 2021 |
| RHM Taxis Ltd. | Extraterritorial | 2003 |
| Rhodawn Investments Limited | Real estate | 2019 |
| Rhodawn Property Limited | Real estate | 2017 |
| Rhomardi Limited | Real estate | 2025 |
| Rhombus Alliance LP | | 2018 |