| Resonance British Wind Energy Income LP | | 2013 |
| Resonance British Wind South West Limited | Financial services | 2021 |
| Resonance Business Group Ltd | Wholesale & retail | 2025 |
| Resonance BW Holdings Limited | Financial services | 2020 |
| Resonance CHW Holdings Limited | Financial services | 2020 |
| Resonance CW Holdings Limited | Financial services | 2020 |
| Resonance Melrose Wind Limited | Financial services | 2021 |
| Resonance Wind GP Ltd | Financial services | 2013 |
| Respiratory Concerns Limited | Health & social care | 2018 |
| Response Consultants UK Limited | Professional & scientific | 2014 |
| Restaurants Banchory Ltd | Hospitality | 2026 |
| Restaurix Ltd | Hospitality | 2025 |
| Resting Brunch Face Ltd | Hospitality | 2023 |
| Restrata Solutions Limited | Professional & scientific | 2010 |
| Resultants Limited | Information & communication | 1996 |
| Results Gym Aberdeen Ltd | Arts & recreation | 2015 |
| Reswell Integrated Solutions Limited | Mining & quarrying | 2024 |
| Retcare Limited | Other services | 2004 |
| Retech Energy Services Ltd | Professional & scientific | 2015 |
| Reth Nutrition Limited | Other services | 2024 |
| Rethink Accountancy Ltd | Professional & scientific | 2018 |
| Retreatment Group Ltd | Construction | 2026 |
| Retro Barn Ltd | Wholesale & retail | 2024 |
| Reuse Innovate Share Enjoy Ltd | Manufacturing | 2019 |
| Revathi Ltd. | Professional & scientific | 2011 |
| Reverse Farkle Limited | Professional & scientific | 2018 |
| Revive Fitness Gym Ltd | Arts & recreation | 2024 |
| Revive Geoscience Services Ltd | Other services | 2023 |
| Revive Intra Limited | Mining & quarrying | 2015 |
| Revived Construction Limited | Construction | 2020 |
| Rewallstreet Limited | Professional & scientific | 2024 |
| Rewild Skincare Scotland Ltd | Other services | 2025 |
| Rewind Aberdeen Ltd | Wholesale & retail | 2025 |
| Reynolds Cocktails Ltd | Wholesale & retail | 2023 |
| Reyvate Limited | Information & communication | 2025 |
| Reyzan Limited | Transport & logistics | 2023 |
| Rezolution Limited | Professional & scientific | 2021 |
| RF Contracting Ltd | Professional & scientific | 2012 |
| RFD Joinery Ltd | Construction | 2022 |
| RG Admin & Events Limited | Administrative & support | 2025 |
| RGC OIL Services Limited | Professional & scientific | 2024 |
| RGF Properties Limited | Construction | 2004 |
| RGP Well Solutions Limited | Mining & quarrying | 2011 |
| RHC Consultancy Limited | Administrative & support | 2013 |
| Rhemacare Ltd | Health & social care | 2024 |
| Rhencullen Consulting Limited | Professional & scientific | 2017 |
| Rhino Home Security Limited | Construction | 2013 |
| Rhino Scientific Group Ltd | Wholesale & retail | 2026 |
| Rhum Services Ltd | Construction | 2021 |
| Rhyan Fryer Property Limited | Real estate | 2020 |
| Rhyzome Ltd | Professional & scientific | 2013 |
| RIA Process Consultants Ltd | Professional & scientific | 2010 |
| Riandalyn Limited | Agriculture & fishing | 2003 |
| RIB Deepsea Engineering Ltd | Administrative & support | 2010 |
| Ribnort Limited | Real estate | 1983 |
| Ribs Belly Bacon Ltd | Hospitality | 2025 |
| Ricardeen Limited | Other services | 2011 |
| Ricco Engineering Consulting and Management Limited | Professional & scientific | 2019 |
| Rice N Spice 2 Ltd | Administrative & support | 2016 |
| Rich-Drip Ltd | Wholesale & retail | 2025 |
| Richard Irvin Fabrications Limited | Professional & scientific | 1978 |
| Richard Oxlade Consultancy Ltd. | Mining & quarrying | 2008 |
| Richardson Ross Group Ltd | Professional & scientific | 2022 |
| Richmond Mills Fabrication Limited | Construction | 2016 |
| Richmond Properties (Aberdeen) Limited | Construction | 1983 |
| Richy Mcallister Media Ltd | Information & communication | 2025 |
| Rick Welltech Limited | Mining & quarrying | 2025 |
| Ricky JH Electrical Ltd | Energy | 2025 |
| Riddell Fabrication Services Ltd | Other services | 2012 |
| Ridge Records Limited | Information & communication | 2004 |
| Ridgewood Limited | Real estate | 1994 |
| RIF Engineering Solutions Ltd | Professional & scientific | 2021 |
| Riftbark Ltd | Arts & recreation | 2025 |
| RIG Partner Decom. Ltd | Water & waste | 2021 |
| RIG Tubulars Limited | Administrative & support | 2014 |
| Riga Piping Solutions Ltd. | Professional & scientific | 2009 |
| Rigblast Energy Services Limited | Professional & scientific | 1990 |
| Rigdeluge Global Limited | Mining & quarrying | 2012 |
| Rigdeluge Limited | Mining & quarrying | 2012 |
| Rigel AG Ltd | Professional & scientific | 2024 |
| Riggs Bay Properties Limited | Real estate | 2005 |
| Right Angle (Global) Limited | Professional & scientific | 2025 |
| Right People (Recruitment Accountancy) Ltd | Administrative & support | 2021 |
| Right People (Recruitment Solutions) Limited | Administrative & support | 2007 |
| Rigmar Services Limited | Mining & quarrying | 2007 |
| Rigquip Drilling Services Limited | Administrative & support | 2007 |
| Rigquip Holdings Limited | Wholesale & retail | 2015 |
| Rigquip International Ltd. | Administrative & support | 2006 |
| Rigquip Ltd | Professional & scientific | 2011 |
| Rigrun Limited | Health & social care | 2013 |
| Rigtech Independent Ltd. | Professional & scientific | 2002 |
| Riight Business Consulting Ltd | Information & communication | 2023 |
| Riitta Jutila Ltd | Health & social care | 2023 |
| Rijik Limited | Wholesale & retail | 2024 |
| Rike Limited | Professional & scientific | 2019 |
| Riksu Consulting Limited | Professional & scientific | 2020 |
| Rikuselt LP | | 2013 |
| Rilmary Limited | Real estate | 2026 |
| RIO Grande Impex LP | | 2013 |
| RIO Prestige Performance (UK) Limited | Administrative & support | 2004 |