| Repair and Refurbish Limited | Administrative & support | 2019 |
| Repair My Alloy Wheels Ltd | Information & communication | 2025 |
| Repairs Gyle Limited | Wholesale & retail | 2025 |
| Repeat IT LP | | 2021 |
| Repel Ltd | Financial services | 2021 |
| Replicom LP | | 2016 |
| Reporting for Business Ltd | Information & communication | 2012 |
| Reposa Biotech Solutions Ltd | Professional & scientific | 2023 |
| Represent Comms Limited | Professional & scientific | 2004 |
| Reprin Limited | Real estate | 2016 |
| Repscot Limited | Other services | 2009 |
| Republic of Story Limited | Information & communication | 2010 |
| Reqrmend Limited | Information & communication | 2024 |
| Requat Advisory Ltd. | Professional & scientific | 2016 |
| Required Cloud Systems Limited | Administrative & support | 2013 |
| Required Dental Systems Ltd | Health & social care | 2011 |
| Required Domiciliary Care Limited Ltd | Health & social care | 2020 |
| Required Eco Systems Limited | Professional & scientific | 2012 |
| Required GP Systems Limited | Extraterritorial | 2011 |
| Required Sporting Limited | Arts & recreation | 2020 |
| Required Systems Limited | Administrative & support | 2001 |
| Reqvantra CRM Structures Ltd | Information & communication | 2026 |
| Rerum Impex LP | | 2017 |
| RES Investments Ltd | Extraterritorial | 2010 |
| RES Plus Group LP | | 2015 |
| RES Securitas Ltd | Professional & scientific | 2020 |
| Resarf Property Company Limited (the) | Administrative & support | 1960 |
| Resbrook Unit Trust Investment Partners LP | | 2007 |
| Resbyte Games Ltd | Information & communication | 2025 |
| Rescue ROD UK Investments Limited | Real estate | 2022 |
| Rescufix Limited | Administrative & support | 2023 |
| Research Data Scotland | Health & social care | 2020 |
| Research in Dreams Ltd | Education | 2022 |
| Research Innovations Limited | Information & communication | 2012 |
| Researchactive.Com Ltd | Information & communication | 2013 |
| Researchify Limited | Information & communication | 2025 |
| Reseller by Ojemba Ltd | Wholesale & retail | 2025 |
| Resen Power Ltd | Construction | 2026 |
| Reserve Capital LP | | 2013 |
| Reserve Management LP | | 2015 |
| Reserve Travel Ltd | Administrative & support | 2007 |
| Reservex L.P. | | 2015 |
| Reset Nutrition Limited | Manufacturing | 2021 |
| Resi Blueprint Limited | Hospitality | 2018 |
| Reside Cleaning and Maintenance Limited | Administrative & support | 2017 |
| Residence Corp Limited | Hospitality | 2023 |
| Residual Securities Limited | Financial services | 2016 |
| Resilience CBT Ltd | Other services | 2022 |
| Resilience Constellation Management Limited | Professional & scientific | 2019 |
| Resilience Construction Ltd | Construction | 2023 |
| Resilience Diagnostic Platform Ltd | Construction | 2021 |
| Resilience Engine Limited | Professional & scientific | 2017 |
| Resilient Champion LP | | 2016 |
| Resilient Health for Living Limited | Education | 2020 |
| Resilienza LP | | 2023 |
| Resin Scotland Ltd | Construction | 2026 |
| Resolution Mediation Ltd | Other services | 2015 |
| Resolution Real Estate IV SLP GP Limited | Professional & scientific | 2012 |
| Resolution Real Estate IV SLP Limited Partnership | | 2012 |
| Resolution Real Estate V SLP GP Limited | Professional & scientific | 2016 |
| Resolution Real Estate V SLP Limited Partnership | | 2016 |
| Resolve Creative Limited | Other services | 2009 |
| Resolve Scotland Limited | Public administration | 2025 |
| Resolvemytech Ltd | Information & communication | 2025 |
| Resolventa LP | | 2017 |
| RESON8 Coffee Company Ltd | Wholesale & retail | 2023 |
| Resonance Capital Group LP | | 2016 |
| Resonarc Ltd | Professional & scientific | 2025 |
| Resonate AI Limited | Professional & scientific | 2024 |
| Resordinate Limited | Professional & scientific | 2024 |
| Resort Fiduciary Services NO.1 Ltd. | Professional & scientific | 2009 |
| Resourcity Limited | Professional & scientific | 2024 |
| Respect Crematoria Ltd | Other services | 2008 |
| Respect Innovative LP | | 2016 |
| Respecta LP | | 2016 |
| Respen Trade LP | | 2015 |
| Responsible Person Limited | Professional & scientific | 2019 |
| Ressor LP | | 2015 |
| Ressot Agri Products L.P. | | 2017 |
| Restalig Cars Ltd | Transport & logistics | 2025 |
| Restalrig Village Shop Ltd | Wholesale & retail | 2019 |
| Restitution Limited | Administrative & support | 2012 |
| Restless Natives Studios Ltd | Information & communication | 2019 |
| Reston Inter LP | | 2011 |
| Restoration Alliance LP | | 2016 |
| Restorex Limited | Construction | 2011 |
| Restorick Performance Ltd | Other services | 2026 |
| Restory Studio Ltd | Manufacturing | 2021 |
| Results Plus Limited | Information & communication | 2022 |
| Resumenta Systems Limited | Information & communication | 2026 |
| Resurs Systems LP | | 2012 |
| Retail Agenda Ltd | Wholesale & retail | 2024 |
| Retail Associates Limited | Professional & scientific | 1996 |
| Retail in Video Limited | Other services | 2025 |
| Retail MAX Limited | Wholesale & retail | 2026 |
| Retail Scotland Ltd | Wholesale & retail | 2021 |
| Retail Spark Connect Ltd | Information & communication | 2011 |
| Retaintech Ltd | Construction | 2026 |
| Retal LP | | 2016 |
| Reteped Ltd | Arts & recreation | 2024 |