| Revive Building Solutions Limited | Construction | 2014 |
| Revive Hairdressing Limited | Other services | 2022 |
| Revive Multi Soultions Ltd | Administrative & support | 2025 |
| Revived Riches Ltd | Wholesale & retail | 2024 |
| Revolution Events Limited | Administrative & support | 1999 |
| Revolution Vehicle Management Limited | Wholesale & retail | 2012 |
| Revolutional Ltd | Information & communication | 2021 |
| Reya Events Limited | Administrative & support | 2023 |
| Reyncloud Ltd | Information & communication | 2025 |
| RFO Consulting Limited | Information & communication | 2023 |
| Rfwfff Ltd | Information & communication | 2020 |
| RGA Solutions Limited | Professional & scientific | 2021 |
| RGB Sport Ltd | Arts & recreation | 2026 |
| Rgco Holdings Limited | Hospitality | 2021 |
| RGR Construction Consultancy Ltd | Professional & scientific | 2018 |
| Rhino Property Services Limited | Real estate | 2012 |
| RHM Property Co Limited | Real estate | 2021 |
| Rhodium Capital Assets LLP | | 2012 |
| Rhodium Capital Ltd | Professional & scientific | 2012 |
| Rhook Ltd | Wholesale & retail | 2022 |
| Rhythm of Pakistan Ltd | Administrative & support | 2024 |
| RIA Futures Ltd | Financial services | 2019 |
| Ricealign Ltd | Information & communication | 2025 |
| Richard Carter Groundworks Limited | Construction | 2003 |
| Richard Elliott II Limited | Professional & scientific | 2026 |
| Richard Jones Property Maintenance Ltd | Households | 2023 |
| Richard Jousiffe Moving Images Ltd. | Information & communication | 2011 |
| Richards Data Analytics Solutions Ltd | Information & communication | 2025 |
| Richardson Property Advisers Limited | Professional & scientific | 2019 |
| Richardson Property Partners Limited | Real estate | 2024 |
| Richardson's Inspection Services Limited | Mining & quarrying | 2018 |
| Richey Ltd | Professional & scientific | 2017 |
| Richfield Accounting Limited | Professional & scientific | 1987 |
| Richmond Place Residents Management Company Limited | Households | 2020 |
| Richmond Terrace (Tunbridge Wells) Limited | Households | 2004 |
| Richwells Construction Limited | Professional & scientific | 2014 |
| Rickards Windows & Conservatories Limited | Administrative & support | 2004 |
| Ricoli Ltd | Information & communication | 2024 |
| Riddhi Partners Limited | Professional & scientific | 2013 |
| Ridgepc Limited | Information & communication | 2001 |
| Rikki Williams Ltd | Professional & scientific | 2008 |
| Ring IT on Ltd | Wholesale & retail | 2019 |
| Rise Consultancies Limited | Professional & scientific | 2020 |
| Risk Insight Safety Consultants Limited | Professional & scientific | 2015 |
| Riva Limited | Health & social care | 2003 |
| RJF Affiliates Limited | Information & communication | 2017 |
| RJW Consultants (UK) Limited | Professional & scientific | 2014 |
| RJW Consultants Holdings Limited | Financial services | 2021 |
| RJW Consultants LLP | | 2014 |
| RK Jewellery Designs Ltd | Wholesale & retail | 2023 |
| RLC Futures Limited | Financial services | 2011 |
| RLH Roofing Services Limited | Construction | 2002 |
| RM Total Services Ltd | Administrative & support | 2019 |
| RMB Holdings Group Limited | Professional & scientific | 2025 |
| RMB Music Limited | Arts & recreation | 2015 |
| Rmgtech Ltd | Information & communication | 2020 |
| RMK Estates Ltd | Real estate | 2015 |
| Rnss Limited | Manufacturing | 2001 |
| Road and Rail Recruitment Limited | Professional & scientific | 2000 |
| Road Rail & Steam Ltd | Wholesale & retail | 2011 |
| Roadside (UK) LLP | | 2007 |
| Roadskin Limited | Wholesale & retail | 2021 |
| Roam Motorsport Ltd | Manufacturing | 2025 |
| ROB Smith (Productions) Limited | Information & communication | 2007 |
| Robel Media LLP | | 2017 |
| Robert Charles Wood Ltd. | Real estate | 2003 |
| Robert Hart Construction Limited | Extraterritorial | 1968 |
| Robert Jackson Gardens Ltd | Administrative & support | 2021 |
| Robert Shreeve Associates Limited | Professional & scientific | 2005 |
| Robert Taylor Communications Ltd | Professional & scientific | 2003 |
| Robertsbridge Developments Ltd | Real estate | 2024 |
| Robertson Records Ltd | Information & communication | 2023 |
| Robin Grainger Consulting Limited | Professional & scientific | 2020 |
| Robingate Services Limited | Manufacturing | 2013 |
| Roblewood Estates Limited | Real estate | 2025 |
| Robson Asset Management International LLP | | 2007 |
| Robson Asset Management Limited | Financial services | 2007 |
| Robson Asset Management Manco Limited | Real estate | 2011 |
| Roccable Ltd | Real estate | 2020 |
| Rochdale Fireaway Ltd | Hospitality | 2023 |
| Rochemartin Holdings Limited | Professional & scientific | 2016 |
| Rocket Social Agency Limited | Professional & scientific | 2025 |
| Rockman Ventures Limited | Real estate | 2024 |
| Rockpool Homes Ltd | Real estate | 2017 |
| Rocks Hollow Gardens Management Company Limited | Households | 2018 |
| Rocksolid Granit (Europe) Limited | Professional & scientific | 2004 |
| Rockwells Accountancy Services Limited | Professional & scientific | 2017 |
| Rodmell Place Management Company Limited | Households | 2001 |
| Roff Co Ltd | Administrative & support | 2023 |
| Roger Pope Opticians (Dulwich) Limited | Professional & scientific | 2015 |
| Rogue Events Limited | Arts & recreation | 2016 |
| Rokeby Flats (Property Management) Limited | Households | 1966 |
| Romar Ltd | Construction | 2017 |
| Romford Alexander Properties Ltd | Real estate | 2018 |
| Ronley Court Management Co. Ltd | Households | 1985 |
| Rookery Developments Limited | Construction | 2017 |
| Rookhill Limited | Professional & scientific | 1979 |
| Room Angel Foundation | Hospitality | 2024 |
| Room Hire Limited | Real estate | 2019 |
| Roomates Ltd | Information & communication | 2025 |