| Retailogic UK Limited | Wholesale & retail | 2023 |
| Retro Rovers Limited | Administrative & support | 2013 |
| Revmax Ltd | Professional & scientific | 2022 |
| Revolution Property Management Limited | Administrative & support | 2006 |
| Revolve Locks Limited | Other services | 2025 |
| Revroi Services Ltd | Wholesale & retail | 2025 |
| Rework Recruitment Group Limited | Administrative & support | 2021 |
| REX Hurst & Sons Limited | Manufacturing | 2005 |
| Rezala Ltd | Hospitality | 2024 |
| RFT (Byfleet) Ltd | Extraterritorial | 2017 |
| RFT (Great Bookham) Limited | Real estate | 2013 |
| RFT (Portsmouth) Limited | Professional & scientific | 2013 |
| RFT Limited | Construction | 1959 |
| RGA Consulting Limited | Administrative & support | 2005 |
| RGC Title Limited | Professional & scientific | 2015 |
| Rheumis Ltd. | Health & social care | 2024 |
| Rhino Sales Agency Limited | Administrative & support | 2020 |
| Riaaaz Foods Ltd | Hospitality | 2024 |
| Riaaaz Investments Ltd | Real estate | 2022 |
| Richard Galloway Photography Ltd | Other services | 2014 |
| Richard Gidden Oral Design-London (UK) Limited | Health & social care | 1999 |
| Ridgway Heights (Farnham) Management Company Limited | Households | 2006 |
| Riding Court (Brackley) Property Management Limited | Households | 1988 |
| Ridley Electrical Contractors Ltd | Construction | 2012 |
| Riffson Ltd | Wholesale & retail | 2026 |
| Rifpat Medical Solutions Limited | Health & social care | 2019 |
| Right Choice Garage Doors Ltd | Manufacturing | 2016 |
| Right Choice Recruitment Solutions Ltd | Health & social care | 2014 |
| Riio Power Consulting Limited | Professional & scientific | 2017 |
| Ring a Roses Limited | Wholesale & retail | 2021 |
| Ringwood Rooms Ltd | Real estate | 2023 |
| RIO Sarah Company Limited | Health & social care | 2015 |
| Risk Warden Limited | Information & communication | 2015 |
| Riskagent Limited | Information & communication | 2025 |
| Ritz Services Limited | Hospitality | 2018 |
| RJ Consulting Limited | Professional & scientific | 1997 |
| RJC Marine Consultants Ltd | Professional & scientific | 2021 |
| RJF Design Limited | Professional & scientific | 2008 |
| RJH - Strategic Tax & Accountancy Ltd | Financial services | 2022 |
| RK Gutter Roof Conservatory Cleaning Limited | Administrative & support | 2019 |
| RK Installations Ltd | Other services | 2021 |
| Rkpd Services Limited | Construction | 2019 |
| RKR Dynamics Ltd | Information & communication | 2017 |
| RLJ Property Limited | Real estate | 2010 |
| RM Carpets Limited | Wholesale & retail | 2009 |
| RM Decorating Specialists Ltd | Construction | 2012 |
| RMF Mortgage Services Limited | Professional & scientific | 2024 |
| RMI Homes Ltd | Real estate | 2024 |
| RMI Investments Limited | Real estate | 2017 |
| RMS Chemjong Ltd | Real estate | 2025 |
| RNR Enterprises Limited | Real estate | 2011 |
| Road Rover Transport Limited | Transport & logistics | 2025 |
| Roads Facilities Limited | Water & waste | 2006 |
| Roadtune Cars Limited | Real estate | 1967 |
| Roadwheel Tyre & Exhaust Limited | Wholesale & retail | 1976 |
| Robert Beagley Limited | Financial services | 2012 |
| Robert Bean Props Ltd | Manufacturing | 2012 |
| Robert Bredlau Consulting Limited | Administrative & support | 2007 |
| Robert D Scott Limited | Health & social care | 2008 |
| Robert Dibb Ltd | Financial services | 2004 |
| Robert Hunter Limited | Construction | 2015 |
| Robert Simmons Legal Services Limited | Professional & scientific | 2008 |
| Robert's Butchers Limited | Wholesale & retail | 2003 |
| Robophobic Limited | Professional & scientific | 2025 |
| Rochrow Homes Ltd | Real estate | 2020 |
| Rock Box Records Limited | Wholesale & retail | 2018 |
| Rock N Roll Bride Ltd | Information & communication | 2015 |
| Rock on Entertainment Limited | Information & communication | 2013 |
| Rockbourne Recruitment Ltd | Administrative & support | 2017 |
| Rocks Barbers and Hairdressers Ltd | Other services | 2020 |
| Rocura Limited | Administrative & support | 2005 |
| Rodent Rossi Ltd | Administrative & support | 2026 |
| Roger Binks Consulting Limited | Professional & scientific | 2020 |
| Roger Lawson Consulting Ltd | Administrative & support | 2012 |
| Rogers & Carter Heating Ltd | Construction | 2018 |
| Rolfe Family Enterprises (Property) Ltd | Real estate | 2023 |
| Rolfe Family Enterprises Ltd | Financial services | 2023 |
| Roma Choolun Ltd | Education | 2017 |
| Romans 1 Limited | Professional & scientific | 2013 |
| Romans 2 Limited | Professional & scientific | 2013 |
| Romans 3 Limited | Professional & scientific | 2013 |
| Romans Professional Services Limited | Professional & scientific | 1991 |
| Romley Court Residents Management Company Limited | Households | 1982 |
| Rommel Company Limited | Health & social care | 2015 |
| Rompet Limited | Professional & scientific | 2021 |
| Roof Repair Guys Ltd | Construction | 2025 |
| Rooflights and Skylights Limited | Wholesale & retail | 2010 |
| Roofmasters South Ltd | Construction | 2024 |
| Roofs on the Go Limited | Construction | 2025 |
| Roopun Properties Limited | Real estate | 2019 |
| Roostdh Limited | Administrative & support | 2011 |
| Rosam Roofing Ltd | Construction | 2021 |
| Rose & James Limited | Wholesale & retail | 2026 |
| Rose & MAY Interiors Limited | Manufacturing | 2021 |
| Rose Bidco Limited | Financial services | 2025 |
| Rose Farm Limited | Agriculture & fishing | 1954 |
| Rose Nimbus Limited | Information & communication | 2018 |
| Rose Rental Solutions Ltd | Households | 2020 |
| Rose Residential Solutions Ltd | Real estate | 2025 |
| Rosedale Letting Agents Limited | Real estate | 2011 |