| Regency Retail Holding LP | | 2018 |
| Regenerate Edinburgh Limited | Administrative & support | 2019 |
| Regenerus Limited | Health & social care | 2019 |
| Regent Fire Consultants (EW) Limited | Administrative & support | 2024 |
| Regent Pubs & Clubs Limited | Hospitality | 2003 |
| Regent Scotland Ltd | Wholesale & retail | 2022 |
| Regent Trading Partners Ltd | Professional & scientific | 2021 |
| Regentfare Limited | Transport & logistics | 2003 |
| Regentgreen Limited | Extraterritorial | 2003 |
| Regents (Estate Agents) Limited | Real estate | 2026 |
| Regimed LP | | 2013 |
| Regimen Development LP | | 2015 |
| Regimental Bricks Ltd | Manufacturing | 2025 |
| Regional Networks L.P. | | 2010 |
| Regional Power Limited | Administrative & support | 2015 |
| Regional Screen Scotland | Information & communication | 2008 |
| Regione Siciliana LP | | 2014 |
| Regis Business LP | | 2015 |
| Regis Sports Ltd | Hospitality | 2017 |
| Registered Keeper Limited | Information & communication | 2025 |
| Registered Office Group Ltd | Public administration | 2016 |
| Regitta LP | | 2015 |
| Regius School | Education | 1994 |
| Regold Impex LP | | 2016 |
| Regolf Limited | Wholesale & retail | 2026 |
| Regular Music Presents Limited | Professional & scientific | 2010 |
| Regulated Solutions LP | | 2015 |
| Regulus Holding Limited Partnership | | 2021 |
| Regulyne Limited | Information & communication | 2025 |
| REH Phase 1 Subhub Holdings Limited | Financial services | 2014 |
| REH Phase 1 Subhub Limited | Construction | 2014 |
| Rehanrayyan Limited | Health & social care | 2022 |
| Rehantika Autos Limited | Wholesale & retail | 2025 |
| Rehear Labs Limited | Manufacturing | 2019 |
| Rehmatdin Ltd | Professional & scientific | 2019 |
| Rehoboth Africa Limited | Hospitality | 2024 |
| Rehoboth Business Ltd | Other services | 2025 |
| Rehoming Retired Greyhounds (Scotland) Ltd | Professional & scientific | 2021 |
| Reiach and Hall (Emea) Ltd | Professional & scientific | 2022 |
| Reiach and Hall Limited | Professional & scientific | 1992 |
| Reid Hotels Ltd | Hospitality | 2022 |
| Reid Investments Ltd | Real estate | 2021 |
| Reid Mitchell HD EOT Limited | Financial services | 2025 |
| Reid Mitchell HD Limited | Construction | 2018 |
| Reid Murray Ltd | Professional & scientific | 2010 |
| Reid Wilkinson Medical Limited | Health & social care | 2012 |
| Reidev Ltd | Information & communication | 2025 |
| Reign Surgical Ltd | Manufacturing | 2026 |
| Reilerg Profit LP | | 2015 |
| Reilly Cabs | | 1998 |
| Reilly Denholm Ltd | Other services | 2017 |
| Reilly Investment LP | | 2016 |
| Reiman Solution LP | | 2015 |
| Reine Enterprise Solutions Ltd | Information & communication | 2017 |
| Reineur Technologies Limited | Information & communication | 2025 |
| Reisach LP | | 2014 |
| Reith Ecosse Limited | Real estate | 2014 |
| Reith Motors Ltd | Wholesale & retail | 2013 |
| Reiver Cosulting Services Limited | Professional & scientific | 2025 |
| Rejuv Skin Clinic Limited | Real estate | 2023 |
| Rejuv Skin Limited | Other services | 2025 |
| Rekall Cloud Solutions Ltd | Information & communication | 2019 |
| Rekardo Project LP | | 2013 |
| Rekia Trading LP | | 2016 |
| Rekon Invest LP | | 2010 |
| Relatepower Limited | Other services | 2003 |
| Relative Films Ltd | Information & communication | 2016 |
| Relax Real Estate Limited | Real estate | 2018 |
| Relcorp L.P. | | 2009 |
| Release Group LP | | 2017 |
| Relevant Software LP | | 2016 |
| Relevou LP | | 2002 |
| Reliable Facility Solutions UK Limited | Households | 2024 |
| Reliable IT Services Ltd | Information & communication | 2009 |
| Reliable Manufacturing Partners Limited | Other services | 2024 |
| Reliant Solutions Ltd | Administrative & support | 2022 |
| Relief Incorporated Limited | Wholesale & retail | 2025 |
| Relink Resources LP | | 2015 |
| Relish (Skye) Ltd | Hospitality | 2019 |
| Relittos SP | | 2002 |
| Reload Property Limited | Real estate | 2025 |
| Relovanta International Ltd | Transport & logistics | 2026 |
| REM Associates Project Services Ltd | Construction | 2024 |
| Remaco Trading (INT) LP | | 2013 |
| Remark Advisors LP | | 2016 |
| Remarkable Resourcing Ltd | Information & communication | 2025 |
| Rembrado LP | | 2015 |
| Remedium Distribution LP | | 2016 |
| Remember New Earth LP | | 2024 |
| Remeo Limited | Professional & scientific | 2010 |
| Remera Group Ltd | Hospitality | 2024 |
| Remex Partners LP | | 2016 |
| Remex Trade LP | | 2016 |
| Remington Industrial L.P. | | 2009 |
| Remington Investments LP | | 2016 |
| Remini Consulting Holdings LP | | 2018 |
| Remini Consulting LP | | 2017 |
| Remmart LP | | 2013 |
| Remode Collective CIC | Manufacturing | 2017 |
| Remonus LP | | 2020 |