| Rhoson Capital LP | | 2016 |
| Rhovanion Ltd | Other services | 2025 |
| RHP Renovations Ltd | Construction | 2024 |
| Rhubarb and Thistle Properties Limited | Real estate | 2021 |
| Rhubarb Hair Limited | Other services | 2023 |
| Rhubarb. Design Ltd | Professional & scientific | 2025 |
| Rhufaada Limited | Financial services | 2024 |
| Rhyme Enterprises LP | | 2018 |
| Rhys Coffee Consultancy Ltd | Professional & scientific | 2022 |
| Rhythm & Revolution Ltd | Arts & recreation | 2024 |
| Rhythm & Roots Productions Ltd | Education | 2023 |
| Rhyze Mushrooms Co-Op CIC | Agriculture & fishing | 2020 |
| RI & Q Ltd | Real estate | 2019 |
| RI HUA Limited | Hospitality | 2018 |
| RIA Capital Markets Limited | Financial services | 2001 |
| RIA Collections Ltd | Wholesale & retail | 2025 |
| RIA Manchester Limited | Real estate | 2024 |
| RIA Trustee Limited | Administrative & support | 2004 |
| Rialrent LP | | 2012 |
| Riantec Alliance LP | | 2016 |
| Riaro LP | | 2015 |
| Ribblesdale Enterprises Group | | 1994 |
| Ribbons and Figurines Ltd | Manufacturing | 2002 |
| RIC Couriers Limited | Transport & logistics | 2019 |
| Rice Bowl Edinburgh Ltd | Hospitality | 2024 |
| Rice Master Global Ltd. | Administrative & support | 2023 |
| Rice Properties Limited | Construction | 1985 |
| Ricex Ltd | Hospitality | 2025 |
| Rich - Pharma LP | | 2012 |
| Rich Black Africans Limited | Construction | 2025 |
| Rich Falcon International LP | | 2016 |
| Rich Invest LP | | 2015 |
| Rich Styles Ltd | Other services | 2024 |
| Rich T Research Ltd | Professional & scientific | 2025 |
| Richappconsultants Limited | Information & communication | 2013 |
| Richard Adamson Ltd | Real estate | 2012 |
| Richard Bright Associates Limited | Professional & scientific | 2019 |
| Richard Dawson Tours Limited | Administrative & support | 2026 |
| Richard F Mackay (House Furnishers) Limited | Wholesale & retail | 1977 |
| Richard F. Mackay Limited | Wholesale & retail | 1944 |
| Richard Green Letting Ltd | Real estate | 2022 |
| Richard Gregory Limited | Health & social care | 2023 |
| Richard Mackintosh Advisory Limited | Professional & scientific | 2020 |
| Richard Mcintosh Ltd | Professional & scientific | 2017 |
| Richard Mountney Photography Ltd | Professional & scientific | 2010 |
| Richard Phillips Planning Limited | Professional & scientific | 2017 |
| Richard Singh Consultancy Ltd | Professional & scientific | 2024 |
| Richards Consulting Ltd | Professional & scientific | 2023 |
| Richardson Held LP | | 2014 |
| Richardson Medical Ltd | Health & social care | 2019 |
| Richardson Services Ltd | Manufacturing | 2025 |
| Richie Commercial LP | | 2013 |
| Richies Scaffolding Services Limited | Construction | 2013 |
| Riching Limited | Wholesale & retail | 2018 |
| Richlond Projects L.P. | | 2014 |
| Richmar Logistic and Chartering UK LP | | 2014 |
| Richmond Alliance L.P. | | 2012 |
| Richmond Consult LP | | 2013 |
| Richmond Inc LP | | 2014 |
| Richmond Land Limited | Financial services | 2023 |
| Richmond Nominees Limited | Administrative & support | 1987 |
| Richmond SLP | | 1998 |
| Richmond Terrace Ltd | Real estate | 2020 |
| Richstone Experts L.P. | | 2011 |
| Richstore LP | | 2016 |
| Richtown Universal L.P. | | 2015 |
| Richvaley Corp LP | | 2015 |
| Richworld Development LP | | 2016 |
| Rick Finc Associates Limited | Administrative & support | 2010 |
| Rick Shaw's Fine Foods Limited | Professional & scientific | 2005 |
| Ricksen Universal LP | | 2014 |
| Ricky Martin Edin Ltd | Wholesale & retail | 2023 |
| Rico Developments Ltd | Information & communication | 2010 |
| Rico Trade LP | | 2016 |
| Ricochetways Ltd | Transport & logistics | 2019 |
| Riddler Consultancy Ltd | Information & communication | 2025 |
| Riddock Sales LP | | 2014 |
| Riden NIX LP | | 2026 |
| Ridescan Ltd | Information & communication | 2024 |
| Ridewood Complex L.P. | | 2013 |
| Ridex Corp. LP | | 2016 |
| Ridg Projects Ltd | Financial services | 2018 |
| Ridge Industries LP | | 2012 |
| Ridgeford Systems LP | | 2014 |
| Ridgeland Ventures LP | | 2013 |
| Ridgestar Worldwide L.P. | | 2016 |
| Ridgewood Roofing and Render Ltd | Construction | 2024 |
| Ridland Wealth Management Limited | Financial services | 2011 |
| Ridz Enterprise Limited | Administrative & support | 2023 |
| RIE Inspired Limited | Professional & scientific | 2023 |
| Riet Solutions Ltd | Wholesale & retail | 2025 |
| Rifax Invest LP | | 2012 |
| Rifbro Ltd. | Wholesale & retail | 2009 |
| Rifibax Ltd | Wholesale & retail | 2024 |
| Rift SLP 1 Dissolved Limited Partnership | | 2012 |
| Rift SLP 2 Dissolved Limited Partnership | | 2012 |
| Rift Valley Farms UK Limited | Professional & scientific | 2023 |
| Rigadvisor Ltd | Professional & scientific | 2019 |
| Rigaer LP | | 2014 |
| Rigatoni's Limited | Hospitality | 2012 |