| Redean Ventures LP | | 2014 |
| Redear Software Ltd | Professional & scientific | 2025 |
| Redeem Technologies Ltd | Information & communication | 2023 |
| Redemptio Limited | Real estate | 2023 |
| Redemption Estates Ltd | Real estate | 2002 |
| Redes LP | | 2001 |
| Redfern Industries LP | | 2016 |
| Redfern Projects LP | | 2014 |
| Redfern Retail Group Limited | Wholesale & retail | 2021 |
| Redforce Trading LP | | 2015 |
| Redford Capital Ltd | Information & communication | 2014 |
| Redford Care Limited | Health & social care | 2010 |
| Redford Estate Limited | Real estate | 1993 |
| Redford Medical Limited | Health & social care | 2017 |
| Redford Road 1962 Limited | Extraterritorial | 2014 |
| Redfour MSS Limited | Wholesale & retail | 2015 |
| Redhall Decorating Ltd | Construction | 2025 |
| Redhall Development Limited | Construction | 2023 |
| Redhill Enterprises L.P. | | 2011 |
| Redhill Industrial Holdings LP | | 2020 |
| Redhill Industrial L.P. | | 2016 |
| Redhill Promotions (Europe) L.P. | | 2011 |
| Redhood Cnsltng Ltd | Professional & scientific | 2022 |
| Redhouse Castle Limited | Agriculture & fishing | 1994 |
| Redimatur Ltd | Wholesale & retail | 2019 |
| Redjotter Ltd | Professional & scientific | 2019 |
| Redkarl Properties Ltd | Real estate | 2019 |
| Redkin Trade LP | | 2014 |
| Redmann Ltd | Real estate | 2024 |
| Redmill Resourcing Limited | Administrative & support | 2012 |
| Redmond Harvey Limited | Professional & scientific | 2019 |
| Redmond Industries LP | | 2015 |
| Redmond Sales LP | | 2016 |
| Redonda Properties Limited | Real estate | 2022 |
| Redpath & Mclean Motor Company Limited | Wholesale & retail | 2004 |
| Redpier LP | | 2011 |
| Redrice I (Scotland) Ltd | Financial services | 2020 |
| Redrice I FP LP | | 2021 |
| Redrice II FP LP | | 2025 |
| Redsage Management LP | | 2012 |
| Redshaw Energy Park 2 Limited | Energy | 2024 |
| Redshaw Energy Park Developments LLP | | 2024 |
| Redshaw Energy Park Limited | Energy | 2024 |
| Redsky Financial Planning Ltd | Financial services | 2013 |
| Redsstack Ltd | Information & communication | 2019 |
| Redstone Retail T/A Paper Rack Ltd | Information & communication | 2017 |
| Redstone RIG Storage Ltd | Energy | 2014 |
| Redsuni Consult LP | | 2017 |
| Redtex Corporation L.P. | | 2010 |
| Redway Enterprises L.P. | | 2008 |
| Redwing Tech Ltd | Information & communication | 2022 |
| Redwire Ltd | Information & communication | 2009 |
| Redwood Birkhill (Holdings) Limited | Administrative & support | 2013 |
| Redwood Birkhill Limited | Hospitality | 1977 |
| Redwood Europe L.P. | | 2008 |
| Redwoods Services Limited | Wholesale & retail | 1991 |
| Redz Consulting LP | | 2017 |
| Reefbrae Limited | Extraterritorial | 2002 |
| Reefbreak LP | | 2018 |
| Reeif II General Partner L.P. | | 2012 |
| Reeif II General Partner Limited | Administrative & support | 2012 |
| REEIF2 GP LLP | | 2013 |
| Reel Nursing Ltd | Health & social care | 2019 |
| Reel Time Events Limited | Arts & recreation | 2005 |
| Reetha Films Ltd | Information & communication | 2025 |
| Reeves Town & Country Limited | Real estate | 2019 |
| Refa Group LP | | 2016 |
| Refair L.P. | | 2011 |
| Refeel Yoga LP | | 2024 |
| Reference Point Advisory Ltd | Professional & scientific | 2010 |
| Reffert Impex LP | | 2012 |
| Reffert Inter LP | | 2011 |
| Refined Cleaning Edinburgh Ltd | Administrative & support | 2025 |
| Refinerydraft Consultants LP | | 2024 |
| Reflect Window Cleaning Limited | Administrative & support | 2022 |
| Reflektiv IT Ltd | Information & communication | 2018 |
| Reform Offshore Limited | Professional & scientific | 2018 |
| Reform Scotland | Professional & scientific | 2008 |
| Reform Studio Pilates Ltd | Arts & recreation | 2026 |
| Refre Impex LP | | 2016 |
| Refresh Systems LP | | 2013 |
| Refreton Services LP | | 2015 |
| Refurnish Limited | Other services | 2019 |
| REG Greenburn Limited | Energy | 2015 |
| REG Knockodhar Limited | Energy | 2017 |
| Regal Cask Blenders Ltd | Wholesale & retail | 2026 |
| Regal Coaches Limited | Transport & logistics | 2002 |
| Regal ED Limited | Wholesale & retail | 2020 |
| Regal Knight SP | | 2001 |
| Regal Merchants L.P. | | 2011 |
| Regal Union LP | | 2001 |
| Regal-Vibro Limited | Manufacturing | 2007 |
| Regalex Logistics L.P. | | 2015 |
| Regaliy Limited | Health & social care | 2023 |
| Regard Commerce LP | | 2012 |
| Regecal LP | | 2007 |
| Regency Business LP | | 2017 |
| Regency EYE Centre Limited | Other services | 2025 |
| Regency EYE Hospital Limited | Other services | 2025 |
| Regency EYE Limited | Other services | 2025 |