| RD Legal Trustees Limited | Financial services | 2024 |
| RD Property Developments Ltd | Construction | 2021 |
| RD Venture Ltd | Hospitality | 2025 |
| Rdautodamian Limited | Manufacturing | 2025 |
| RDC Group Limited | Information & communication | 2000 |
| RDE Group LLP | | 2015 |
| RDI Associates Ltd | Professional & scientific | 2006 |
| RDM Industry LP | | 2014 |
| RDM Pubs Ltd | Hospitality | 2017 |
| RDT Productions Ltd | Construction | 2019 |
| RDX Technics L.P. | | 2011 |
| RE Investment Management Ltd | Extraterritorial | 2012 |
| RE Roofing Services Ltd | Construction | 2020 |
| RE Valvona Properties Limited | Real estate | 2004 |
| Re-Group Build Ltd | Real estate | 2024 |
| Re-Group Construction Ltd | Construction | 2016 |
| Re-Group Developments Ltd | Real estate | 2019 |
| Re-Group Letting Ltd | Construction | 2019 |
| Re-Innovate Limited | Administrative & support | 2006 |
| Re-Solution Alliance LP | | 2014 |
| Re-Think Edinburgh Ltd | Other services | 2019 |
| Re:Broadening Horizons Property Group Ltd | Real estate | 2025 |
| Re:Inventa Ltd | Professional & scientific | 2025 |
| REA Export Co. | | 1996 |
| Reach 4 Coaching & Consulting Ltd | Information & communication | 2012 |
| Reachin Media Ltd | Information & communication | 2015 |
| Reacon Industries LP | | 2016 |
| React 24 Limited | Other services | 2012 |
| Reactive Function Limited | Administrative & support | 2015 |
| Reactive Hire Limited | Other services | 2014 |
| Reactive Property Limited | Real estate | 2020 |
| Reactive Service Solutions Ltd | Construction | 2022 |
| Read the Market Ltd | Professional & scientific | 2023 |
| Read, Write, Execute Technologies Ltd | Information & communication | 2025 |
| Readly Co-Investment CI LP | | 2017 |
| Ready Assets Investments LP | | 2015 |
| Ready Marketing L.P. | | 2011 |
| Readyvia Files Ltd | Wholesale & retail | 2026 |
| Reaf General Partner L.P. | | 2007 |
| Reaf GP (Scotland) Limited | Financial services | 2007 |
| Reaf II General Partner L.P. | | 2015 |
| Real Estate Auctions LP | | 2016 |
| Real Estate Group International LP | | 2017 |
| Real Estate Partners VII Offshore, L.P. | | 2013 |
| Real Estate SPV 1 Ltd | Real estate | 2020 |
| Real Experience Matters Limited | Professional & scientific | 2018 |
| Real Home Tech L.P. | | 2014 |
| Real Impact Group Limited | Professional & scientific | 2023 |
| Real Life Financial Planning Ltd | Professional & scientific | 2018 |
| Real Market IT LP | | 2017 |
| Real Nautica LP | | 2016 |
| Real Pilates Ltd. | Arts & recreation | 2002 |
| Real Scot Shop Ltd | Wholesale & retail | 2017 |
| Real Seafood Limited | Wholesale & retail | 2022 |
| Real Smart Solutions L.P. | | 2011 |
| Real Smart Systems L.P. | | 2010 |
| Real Support Solutions L.P. | | 2014 |
| Real Water (Edinburgh) Limited | Professional & scientific | 2013 |
| Realcode Media Technology Limited | Information & communication | 2026 |
| Realedge System LP | | 2013 |
| Realfeed Alliance LP | | 2017 |
| Realfoodsource Ltd. | Wholesale & retail | 2012 |
| Realist LP | | 2016 |
| Reality Estate Ltd | Real estate | 2024 |
| Reality Growth Ltd | Information & communication | 2018 |
| Realling Limited | Real estate | 1998 |
| Really Brilliant Stuff Ltd | Hospitality | 2025 |
| Really Good Digital Marketing Ltd | Information & communication | 2023 |
| Really Interesting Objects C.I.C. | Wholesale & retail | 2009 |
| Realm Chiropractic Ltd | Professional & scientific | 2018 |
| Realmark Worldwide L.P. | | 2014 |
| Realmeco Ltd | Wholesale & retail | 2019 |
| Realmo Opportunities LP | | 2015 |
| Realorfakeofficial Ltd | Information & communication | 2019 |
| Realprof Solutions LP | | 2012 |
| Realset Trade LP | | 2017 |
| Realstudio Design LP | | 2012 |
| Realtex Trade LP | | 2017 |
| Realtime Commerce LP | | 2016 |
| Realtime CV Services Limited | Information & communication | 2017 |
| Realtime International LP | | 2015 |
| Reasonable Adjustments CIC | Health & social care | 2016 |
| Reasons Y Limited | Administrative & support | 2018 |
| Reasort Estates Limited | Other services | 2020 |
| Reath Technology Ltd | Information & communication | 2019 |
| Reay Farms Limited | Agriculture & fishing | 2013 |
| Rebecca &Louis Limited | Hospitality | 2023 |
| Rebecca Corporation L.P. | | 2012 |
| Rebecca Emily Henderson Ltd | Professional & scientific | 2022 |
| Rebecca WOX Limited | Professional & scientific | 2024 |
| Rebel Road Ltd | Other services | 2017 |
| Rebirth Engineering CIC | Manufacturing | 2025 |
| Rebirth Invest LP | | 2017 |
| Reborn Lifestyle UK Ltd | Manufacturing | 2018 |
| Rebound and Beyond Ltd | Education | 2026 |
| Rebuild Engineering Ltd | Professional & scientific | 2021 |
| Recalibrate Together CIC | Education | 2026 |
| Recaptured Ltd | Wholesale & retail | 2018 |
| Recirc Energy Limited | Construction | 2019 |
| Recollar Ltd | Wholesale & retail | 2025 |