| Requiem Apparel Limited | Manufacturing | 2025 |
| Research Masters Ltd | Professional & scientific | 2021 |
| Reservoir Devs Limited | Information & communication | 2017 |
| Reshma Sultana Limited | Other services | 2024 |
| Reside Commercial Ltd | Construction | 2017 |
| Reside Investments & Developments Ltd | Construction | 2017 |
| Resilience Holdings Ltd | Financial services | 2023 |
| Resin Luxe Ltd | Wholesale & retail | 2024 |
| Resinking Limited | Construction | 2017 |
| Resintech Coatings Ltd | Wholesale & retail | 2019 |
| Resistance Roofing Ltd | Construction | 2025 |
| Resolve Education Ltd | Education | 2021 |
| Resolver Claims Management Limited | Financial services | 2005 |
| Resolvtech Ltd | Information & communication | 2026 |
| Resonant Technology Limited | Information & communication | 2025 |
| Resource Cover Ltd | Administrative & support | 2015 |
| Respect Creative CIC | Arts & recreation | 2026 |
| Restore Alloys Limited | Wholesale & retail | 2011 |
| Restorology Ltd | Other services | 2022 |
| Resurgence Marketing Ltd | Construction | 2019 |
| Retail Pro Ltd | Wholesale & retail | 2023 |
| Retail Recycling Ltd | Water & waste | 2018 |
| Retrospective Techniques Limited | Information & communication | 1999 |
| Retta Limited | Health & social care | 2025 |
| Retu Ltd | Transport & logistics | 2025 |
| Reuben Consultants Ltd | Professional & scientific | 2020 |
| REV3D UP Ltd | Manufacturing | 2024 |
| Revasse Limited | Wholesale & retail | 2025 |
| Reve Produkt Ltd | Wholesale & retail | 2012 |
| Revelle Interiors Ltd | Construction | 2016 |
| Revello Group Ltd | Wholesale & retail | 2025 |
| Revenixa AI Limited | Wholesale & retail | 2025 |
| Revenue Protection Ltd | Professional & scientific | 2023 |
| Reviseopen Limited | Information & communication | 1991 |
| Revival Roofing Solutions Ltd | Construction | 2026 |
| Revive Eco Energy Ltd | Construction | 2024 |
| Revive Studios International Ltd | Information & communication | 2023 |
| Revnark Ltd | Professional & scientific | 2025 |
| Revolutionising Ltd | Administrative & support | 2022 |
| Revoxer Limited | Information & communication | 2026 |
| REX Court Management Company Limited | Households | 1999 |
| Reynolds Assets Limited | Construction | 2025 |
| RF Trading Sales Ltd | Wholesale & retail | 2025 |
| RFA Properties MCR Ltd | Real estate | 2025 |
| RG Computing Services Limited | Professional & scientific | 2016 |
| RGM Motor Services Ltd | Wholesale & retail | 2019 |
| RGT Construction Ltd | Construction | 2023 |
| RH Lancashire Driveways Ltd | Construction | 2023 |
| RH Property Facilities and Management Ltd | Real estate | 2023 |
| RH Property Group Ltd | Real estate | 2022 |
| RH Smith Engineering Ltd | Manufacturing | 2012 |
| RH Studios MCR Limited | Information & communication | 2025 |
| RHE Group Ltd | Other services | 2026 |
| Rhiannon Barrington Ltd | Professional & scientific | 2019 |
| Rhino Resin Ltd | Construction | 2020 |
| Rhinorev Ltd | Information & communication | 2025 |
| RHN Sporthorses Limited | Agriculture & fishing | 2021 |
| Rhodes & Sons Holdings Limited | Construction | 2026 |
| Rhodes and Sons Construction Limited | Construction | 1988 |
| Rhys James Developments Ltd | Construction | 2025 |
| Ri&Mr Ventures Ltd | Hospitality | 2025 |
| RIA LEE Limited | Other services | 2006 |
| Ribble Valley Solutions Ltd | Professional & scientific | 2006 |
| Ricca Services Ltd | Administrative & support | 2021 |
| Rice Bar and Grill Limited | Hospitality | 2022 |
| Richard & SON Trees & Landscaping Ltd | Administrative & support | 2026 |
| Richard L. Thomas Associates Limited | Other services | 2001 |
| Richards and Smirk (Metals) Limited | Wholesale & retail | 1966 |
| Richardson's Commercials (Oldham) Limited | Wholesale & retail | 1985 |
| Richer Productions Limited | Information & communication | 2009 |
| Richmere Estates 2.0 Limited | Real estate | 2025 |
| Richmond Joiners and Builders Limited | Construction | 1993 |
| Richmond Lake Management Ltd | Real estate | 2019 |
| Rick Tebay Creative Limited | Professional & scientific | 2018 |
| Rickerby Consultancy Ltd | Professional & scientific | 2020 |
| Ride & Roam Ltd | Manufacturing | 2025 |
| Ride OUT Attractions Ltd | Administrative & support | 2002 |
| Ride-Ease Ltd | Transport & logistics | 2024 |
| Ridehalgh & Snowden Ltd | Real estate | 2016 |
| Ridest Ltd | Transport & logistics | 2015 |
| Ridge Construction Limited | Professional & scientific | 1997 |
| Ridgedales Limited | Households | 1997 |
| Ridgewood Properties Limited | Extraterritorial | 2016 |
| Ridgway Engineering Consultancy Ltd | Construction | 2018 |
| Ridzgreenenergy Ltd | Professional & scientific | 2024 |
| Rigby's (UK) Limited | Manufacturing | 2004 |
| Right Direction Care Ltd | Health & social care | 2025 |
| Right Path Financial Planning Limited | Financial services | 2024 |
| Right Side of the Bridge Ltd | Hospitality | 2023 |
| Right Solution Properties Ltd | Real estate | 2026 |
| Rightvision Solutions Ltd | Information & communication | 2023 |
| Riima Oldham Limited | Wholesale & retail | 2024 |
| Rikinee Comms Limited | Information & communication | 2008 |
| Rimo Properties Limited | Real estate | 2015 |
| Ringley Lettings Ltd | Real estate | 2019 |
| Rinse My Ride Limited | Administrative & support | 2025 |
| Ripple Developments Limited | Manufacturing | 1982 |
| Ripple Group Limited | Financial services | 2001 |
| Ripple Management Services Limited | Professional & scientific | 2021 |
| RIS Group Holdings Ltd | Financial services | 2024 |