| Retreat Breaks Limited | Hospitality | 2021 |
| Retreat Thai Massage Therapy Limited | Other services | 2019 |
| Retro Game Trading Limited | Wholesale & retail | 2026 |
| Retro Nova Goods Limited | Wholesale & retail | 2025 |
| Reupcycle Community Interest Company | Water & waste | 2025 |
| Reva H Limited | Real estate | 2023 |
| Reva S Group Limited | Financial services | 2023 |
| Reva.C Limited | Construction | 2023 |
| Reva.F Limited | Real estate | 2023 |
| Rever Homes Ltd | Construction | 2020 |
| Revere Consulting Limited | Real estate | 2023 |
| Reverl Ltd | Information & communication | 2023 |
| Reversemedia Ltd | Transport & logistics | 2025 |
| Reviews Sorted Ltd | Professional & scientific | 2025 |
| Revival Health, Beauty & Massage Therapy Ltd | Other services | 2024 |
| Revivalist Furniture Limited | Wholesale & retail | 2015 |
| Revive Business Recovery Limited | Professional & scientific | 2013 |
| Revolution Fitness Limited | Arts & recreation | 2004 |
| Revs Motorcycles Ltd | Wholesale & retail | 2024 |
| Revs N Relics @ the Garage Ltd | Hospitality | 2020 |
| Rewards Holding Ltd | Information & communication | 2022 |
| Rewards International Limited | Wholesale & retail | 2006 |
| Rewind the Lines Limited | Other services | 2022 |
| Rework Fitness Ltd | Arts & recreation | 2019 |
| Reynolds & Stephens Ltd | Administrative & support | 2024 |
| Reyquis Limited | Construction | 2017 |
| Rezas Investments Ltd | Real estate | 2022 |
| RFB Taverns Ltd | Hospitality | 2023 |
| RFP Ltd | Real estate | 2018 |
| RG Universal Limited | Administrative & support | 2025 |
| Rgarbutt Civils Limited | Professional & scientific | 2020 |
| RGB Electrical Ltd | Wholesale & retail | 2021 |
| RGK Dynamics Ltd | Professional & scientific | 2025 |
| RGM Service Company Limited | Health & social care | 2014 |
| RGR Utilities Ltd | Construction | 2025 |
| RH & Sons Construction Ltd | Construction | 2024 |
| RH Print Services Ltd | Manufacturing | 2013 |
| RH Town Planning Ltd | Professional & scientific | 2019 |
| Rhelm Ltd | Professional & scientific | 2022 |
| RHG Investments Limited | Real estate | 2014 |
| Rhino Housing Limited | Real estate | 2026 |
| Rhino Solutions Limited | Professional & scientific | 2018 |
| Rhinos Limited | Real estate | 2005 |
| RHL Developments Ltd | Construction | 2024 |
| Rhodes (Yorkshire) Limited | Real estate | 2014 |
| Rhodes Antique Fine Art Limited | Wholesale & retail | 2009 |
| Rhodes of Thorne Limited | Manufacturing | 1960 |
| Rhodes Recycling Limited | Extraterritorial | 2011 |
| Rhotech Engineering Ltd | Professional & scientific | 2025 |
| Rhycon Consultants Limited | Administrative & support | 2017 |
| RIB Republic Ltd | Hospitality | 2025 |
| Ribby Rigging Ltd | Information & communication | 2024 |
| Ribot Construction Limited | Construction | 2015 |
| Ricas Investment Limited | Administrative & support | 2025 |
| Rich Recruitment Limited | Administrative & support | 2025 |
| Richard Aitch Limited | Real estate | 1988 |
| Richard Barnes Decorators Ltd | Construction | 2013 |
| Richard Bennett Decorators Ltd | Construction | 2021 |
| Richard Crowe Farms | Agriculture & fishing | 2012 |
| Richard Marshall Ltd | Professional & scientific | 2017 |
| Richard Price Transport Ltd | Transport & logistics | 2019 |
| Richardson Accountancy Limited | Professional & scientific | 2003 |
| Richburn Solutions Ltd | Construction | 2020 |
| Richmond Developements Limited | Construction | 2017 |
| Richmond Hill Consultancy Ltd | Administrative & support | 2019 |
| Richmonds Timber Yard Ltd | Manufacturing | 2024 |
| Richrose Electronics Ltd | Wholesale & retail | 2025 |
| Rickaby Electrical Ltd | Construction | 2011 |
| Rickaby Power Services Limited | Construction | 2017 |
| Ricks Homeimprovements Ltd | Construction | 2022 |
| Rickymaru Ltd | Wholesale & retail | 2023 |
| Rico Ramirez Events Limited | Hospitality | 2025 |
| Rico Ramirez Group Limited | Hospitality | 2023 |
| Rideout Technical Solutions Limited | Information & communication | 2024 |
| Ridgeline Roofing Services (Doncaster) Limited | Construction | 2024 |
| Ridings Facility Services Ltd | Agriculture & fishing | 2019 |
| Rigging and I&C Services Ltd | Information & communication | 2019 |
| Rigging Support Limited | Information & communication | 2018 |
| Right & Best Foods (UK) Limited | Wholesale & retail | 2013 |
| Right Conversions Ltd | Construction | 2016 |
| Right Horse 4U Limited | Agriculture & fishing | 2006 |
| Rigys Courier Ltd | Transport & logistics | 2024 |
| Rilec Consulting Limited | Other services | 2015 |
| Rilett Property Solutions Ltd | Real estate | 2017 |
| Riley Hub Ltd | Professional & scientific | 2025 |
| Rileys Properties Ltd | Construction | 2015 |
| RIM CNC Ltd | Professional & scientific | 2025 |
| Rio's Pizza Limited | Hospitality | 2020 |
| Rioja Doncaster Ltd | Hospitality | 2018 |
| Ripalot Ltd | Wholesale & retail | 2025 |
| Rise Above Care Ltd | Health & social care | 2020 |
| Rise Above Holdings Ltd | Financial services | 2026 |
| Rise Adaptations Limited | Construction | 2020 |
| Rise and Reform Limited | Arts & recreation | 2024 |
| Rise UP Collective Ltd | Education | 2026 |
| Rise Wellness Concept (Auckley) Limited | Arts & recreation | 2026 |
| Rise Wellness Concept (Bawtry) Limited | Arts & recreation | 2025 |
| Rise Wellness Concept (Hive) Limited | Arts & recreation | 2025 |
| Rise Wellness Concept Limited | Wholesale & retail | 2024 |
| Risr World Ltd | Wholesale & retail | 2020 |