| Red Alert Plumbing Limited | Construction | 2002 |
| Red Gecko Ltd | Arts & recreation | 2006 |
| Red Hot Investing Ltd. | Real estate | 2009 |
| Redblue Energy Holdings Limited | Financial services | 2010 |
| Redblue Energy Limited | Construction | 2010 |
| Redcat Hospitality Technology Limited | Information & communication | 2022 |
| Redridge Building Contracting Limited | Construction | 2006 |
| Redridge Building Contractors Limited | Construction | 2002 |
| Redridge Group Limited | Financial services | 2022 |
| Redridge Homes Ltd | Real estate | 2012 |
| Redridge Private Clients Ltd | Construction | 2021 |
| Redridge Projects Limited | Construction | 2024 |
| Redridge Property Developments Limited | Construction | 2022 |
| Redtiles Consulting Ltd. | Professional & scientific | 2020 |
| Redwood Auto Ltd | Wholesale & retail | 2024 |
| Reed Geomatics (Topographical) Limited | Professional & scientific | 2020 |
| Reed Geomatics Limited | Professional & scientific | 2015 |
| Reeds Weybridge Rugby Football Club Limited | Arts & recreation | 2011 |
| Reframed Furniture Limited | Wholesale & retail | 2025 |
| Regal Bifrons Properties Ltd | Real estate | 2024 |
| Regal North East Property Limited | Real estate | 2023 |
| Regal Properties Northern Limited | Real estate | 2023 |
| Regal Property Assisted Living Ltd | Real estate | 2025 |
| Regal Property Darlo Ltd | Real estate | 2024 |
| Regal Property JDD Limited | Real estate | 2024 |
| Regal Property South Shields Ltd | Real estate | 2023 |
| Regal Property Stroud Limited | Real estate | 2024 |
| Regal UK Property Ltd | Real estate | 2021 |
| Regency Grove Limited | Professional & scientific | 2019 |
| Relocatable Homes Limited | Professional & scientific | 2000 |
| Remotedev Limited | Information & communication | 2023 |
| Removals in Action Limited | Transport & logistics | 2017 |
| Renaissance Corporate Graphics Limited | Other services | 2000 |
| Renaissance Design & Build Limited | Construction | 2000 |
| Reneuron Group Limited | Professional & scientific | 2005 |
| Reneuron Limited | Professional & scientific | 1997 |
| Reota Holdings Limited | Real estate | 2024 |
| Repair My Gadget Limited | Other services | 2019 |
| REPLIK8 Limited | Manufacturing | 2015 |
| Resat Guler Hair Designer Limited | Other services | 2022 |
| Reservoir Engineering Solutions Limited | Mining & quarrying | 2021 |
| Residential Rentals Limited | Real estate | 1963 |
| Resin-On Limited | Construction | 2018 |
| Retail Social Limited | Information & communication | 2020 |
| Revlis Silver Limited | Wholesale & retail | 2003 |
| Revolver Remaps Ltd | Wholesale & retail | 2020 |
| Reymar Asset Management Ltd | Professional & scientific | 2017 |
| RFJ Solutions Limited | Administrative & support | 2010 |
| RH Tyres Limited | Wholesale & retail | 2023 |
| RHA Properties Ltd | Real estate | 2020 |
| RHF Property Services Ltd | Households | 2024 |
| RHS Commercial Management Limited | Administrative & support | 2008 |
| Rich Flares (Weybridge) Ltd | Other services | 2023 |
| Rich Kennedy Ltd | Professional & scientific | 2017 |
| Richard Attoe Limited | Wholesale & retail | 1986 |
| Richard Newsam Limited | Real estate | 2014 |
| Richards Consultants Ltd | Administrative & support | 2019 |
| Richards Radcliffe Limited | Manufacturing | 2013 |
| Richardson Brymer Developments Limited | Real estate | 2005 |
| Richland Assets Limited | Real estate | 2018 |
| Richland Estates (Holdings) Limited | Real estate | 2018 |
| Richland Estates Limited | Real estate | 2015 |
| Richmond Film Festival Ltd | Administrative & support | 2025 |
| Richmond Point Capital Ltd | Professional & scientific | 2009 |
| Ridgeway Gardens Management Limited | Households | 1996 |
| Ridley Management Services Limited | Construction | 2011 |
| Rifai Dent Ltd | Health & social care | 2022 |
| Ringwood Homes Limited | Construction | 2023 |
| Ripe Apple Ltd | Professional & scientific | 2024 |
| Riverford UK Limited | Administrative & support | 2006 |
| Riverside Construction Egham Limited | Construction | 2026 |
| RJM Lynch Consulting Limited | Professional & scientific | 2021 |
| RJP LLP | | 2006 |
| RJP Secretaries Limited | Professional & scientific | 1994 |
| RK Capital Ltd | Real estate | 2024 |
| Rlvd Ltd | Wholesale & retail | 2026 |
| RMJ Heath Property Limited | Real estate | 2023 |
| RMS Consulting Partners Limited | Other services | 2022 |
| Roami Ltd | Information & communication | 2026 |
| Robert Gamlen Homes (Bagshot) Limited | Construction | 2021 |
| Robert Gamlen Homes (Fareham) Limited | Construction | 2018 |
| Robert Gamlen Homes Limited | Construction | 2004 |
| Robert-Houdin Limited | Professional & scientific | 2019 |
| Roberts Building Services Limited | Construction | 1996 |
| Robertson Sumner Limited | Administrative & support | 1999 |
| Robinett Bookkeeping Limited | Professional & scientific | 2004 |
| Robinoak Limited | Hospitality | 2018 |
| Robkal Ltd | Transport & logistics | 2015 |
| Robo Asset Allocation Ltd. | Financial services | 2019 |
| Rock Wood Water Ltd | Administrative & support | 2011 |
| Rockall Limited | Professional & scientific | 2021 |
| Rockdale Financial Services Limited | Professional & scientific | 2000 |
| Rockwood Asset Management Limited | Administrative & support | 2025 |
| Rockwood International Limited | Financial services | 2025 |
| Rockwood Leasing Limited | Administrative & support | 2025 |
| Rockwood Management Limited | Professional & scientific | 2014 |
| Rocky B Limited | Real estate | 2020 |
| Rocky M LLP | | 2020 |
| Rodd Properties Limited | Real estate | 1979 |
| Rodd Properties Number 2 Limited | Construction | 2012 |