| Rootwalk Limited | Real estate | 1974 |
| Rope&Roll Ltd | Manufacturing | 2017 |
| Ropemaker Court Management Company Limited | Households | 2017 |
| Ropeus Constructions Ltd | Construction | 2019 |
| Rosa Gargiulo Services Ltd | Hospitality | 2021 |
| Rosanna Hanness Consulting Limited | Other services | 2025 |
| Rose Acres (ST Neots) Management Company Limited | Households | 2013 |
| Rose Anais-Lene Ltd | Other services | 2024 |
| Rose Hall (Poland) Ltd | Construction | 2017 |
| Rose Hall Holdings Ltd | Construction | 2018 |
| Rose Hall International Ltd | Construction | 2017 |
| Rose Hall Kingswood Limited | Construction | 2023 |
| Rose Hall Luxury Homes Limited | Construction | 2016 |
| Rose Hall Properties LLP | | 2017 |
| Rose Mcgregor Ltd | Professional & scientific | 2003 |
| Rose Surveying Ltd | Professional & scientific | 2011 |
| Rose Trading Services Limited | Other services | 2017 |
| Rose Villa Leasehold Management Limited | Households | 2010 |
| Roseangle Accounting Ltd | Professional & scientific | 2015 |
| Rosebud Properties Limited | Households | 1994 |
| Rosebuds Lactation Consultancy Ltd | Manufacturing | 2017 |
| Rosefield Close (Carshalton) Limited | Extraterritorial | 1992 |
| Rosegate Freehold Management Ltd | Households | 2014 |
| Rosehill Farm Meadow Management Limited | Households | 1987 |
| Rosehill House Residential Home Ltd | Health & social care | 2004 |
| Roseline's Little Blossoms Ltd | Health & social care | 2025 |
| Rosemary's Delicious Cuisine Ltd | Hospitality | 2026 |
| Rosemead Residents Association Limited | Households | 1987 |
| Rosemed Ltd | Health & social care | 2024 |
| Rosenfield Limited | Wholesale & retail | 2003 |
| Roserock Ltd | Information & communication | 2011 |
| Roses & Ribbons Limited | Wholesale & retail | 2026 |
| Rosespring Ltd | Administrative & support | 2022 |
| Rosewood (Colchester) Management Limited | Households | 2012 |
| Rosewood Carpenters Limited | Construction | 2000 |
| Rosewood Court Management Limited | Households | 1979 |
| Rosewood Place Residents Management Company Limited | Households | 2021 |
| Rosewood Property Services Limited | Real estate | 2024 |
| Roshina Properties Limited | Real estate | 2025 |
| Roshkam Limited | Information & communication | 2008 |
| Roshni (UK) Limited | Wholesale & retail | 1992 |
| Roshni Fruits Limited | Real estate | 1982 |
| Roshon Shoram Limited | Real estate | 2025 |
| Ross Court Management Company Limited | Households | 1982 |
| Ross Sutton Wellbeing Consultancy Ltd | Arts & recreation | 2022 |
| Rossetti Lodge Management Limited | Households | 1990 |
| Rostherne Residents Limited | Households | 1975 |
| Rotari DRL Ltd | Construction | 2017 |
| Rotcev Limited | Wholesale & retail | 2023 |
| Rothcross Ltd | Wholesale & retail | 2026 |
| Rotherden Limited | Hospitality | 2025 |
| Rothesay Court Harleyford Street (Management) Ltd | Households | 1979 |
| Rothesay Court Limited | Households | 2003 |
| Rothley Lodge Residents Management Company Limited | Households | 2021 |
| Roti Travel Ltd | Hospitality | 2012 |
| Rotric Engineering Solutions Ltd | Construction | 2025 |
| Roundbath Limited | Households | 1983 |
| Rouse & Co Funeral Directors Ltd | Other services | 2019 |
| Route Marketing Limited | Administrative & support | 2001 |
| Route One Building Consultancy Limited | Professional & scientific | 2007 |
| ROW Euro Bastion Ltd | Information & communication | 2025 |
| Rowan and Hill Limited | Manufacturing | 2020 |
| Rowan Mews Residents Association Limited | Households | 2005 |
| Rowbell Holdings Limited | Professional & scientific | 2008 |
| Rowbell Leisure Limited | Hospitality | 2009 |
| Rowbell Limited | Professional & scientific | 2000 |
| Rowbell PR Limited | Professional & scientific | 2012 |
| Rowbell Properties Limited | Real estate | 2008 |
| Rowbell Residential Limited | Real estate | 2024 |
| Rowbell Trustees Limited | Public administration | 2026 |
| Rowberrie Management Company Limited | Households | 2007 |
| Rowe Allen Limited | Construction | 2010 |
| Rowland Brothers Exhumation Services Ltd | Other services | 2017 |
| Rowland Brothers Funeral Directors Ltd | Professional & scientific | 2009 |
| Rowland Brothers Funeral Services Ltd | Professional & scientific | 2009 |
| Rowland Brothers International Ltd | Other services | 2009 |
| Rowland Brothers Ltd | Other services | 2009 |
| Rowland Brothers Trade Ltd | Other services | 2009 |
| Rowlands Court Ltd | Households | 2019 |
| Rowling Gate (Phase 1) Management Company Limited | Households | 2003 |
| Rowling Gate (Phase 4) Management Company Ltd | Households | 2007 |
| Rowlo`S 58 Limited | Households | 2007 |
| Roworkers Limited | Construction | 2016 |
| Roxleigh Limited | Wholesale & retail | 2003 |
| ROY Shanks Ltd | Extraterritorial | 2025 |
| Royal Flush Technology Limited | Wholesale & retail | 1996 |
| Royal Oak Passage Management Company Limited | Households | 2006 |
| Royal Park Close (Sutton Coldfield) Management Company Limited | Extraterritorial | 2013 |
| Royale Lane Limited | Transport & logistics | 2025 |
| Royale Nayyab Basmati Rice Ltd | Wholesale & retail | 2026 |
| Roylin Corp Ltd. | Construction | 2025 |
| Royston Court Limited | Real estate | 1981 |
| Rozco Ltd | Transport & logistics | 2025 |
| RP Cleaning Services Limited | Administrative & support | 2019 |
| RP Healthcare Consulting Limited | Professional & scientific | 2023 |
| RPB Metals Company UK Limited | Wholesale & retail | 2015 |
| RPG Live Limited | Administrative & support | 2016 |
| RPH Accounting Limited | Administrative & support | 2018 |
| RPH London Limited | Hospitality | 2017 |
| RPL Plumbing & Heating Ltd | Construction | 2019 |