| Redwood Refurb Ltd | Manufacturing | 2026 |
| Reef Guard Limited | Manufacturing | 2024 |
| Reel-Trac Ltd. | Administrative & support | 1996 |
| Reelscape Productions Limited | Information & communication | 2025 |
| Reepa Healthcare Solutions Limited | Health & social care | 2023 |
| Reesra Ltd | Transport & logistics | 2020 |
| Reet's Beauty and Hair Limited | Other services | 2024 |
| Reetale Pro Ltd | Wholesale & retail | 2020 |
| Reevlo Technologies Ltd | Information & communication | 2025 |
| Refined Aesthetics UK Ltd | Other services | 2025 |
| Reflection Medical Group Ltd | Health & social care | 2025 |
| Reflection Smpu Ltd | Other services | 2022 |
| Reflekt Ventures Ltd | Health & social care | 2022 |
| Reforged Through Grit Ltd | Wholesale & retail | 2026 |
| Refresh Carpet Cleaning Ltd | Administrative & support | 2024 |
| Refreshment Shop Ltd | Hospitality | 2011 |
| Refurbia Connect Limited | Information & communication | 2021 |
| Refurbia Limited | Wholesale & retail | 2008 |
| Regency Design Centre Limited | Construction | 2022 |
| Regent Style Ltd | Manufacturing | 2024 |
| Region Developments Ltd | Construction | 2024 |
| Register of Aquatic Professionals Limited | Extraterritorial | 2006 |
| Regservises Limited | Health & social care | 2020 |
| REGUL8FOODS Ltd | Manufacturing | 2026 |
| Rehan Bashir Ltd | Construction | 2025 |
| Rehans Travel Ltd | Transport & logistics | 2026 |
| Rehman Motors Limited | Wholesale & retail | 2026 |
| Rehman Sweets Ltd | Wholesale & retail | 2026 |
| Rehmani International UK Ltd | Information & communication | 2025 |
| Rehmat Subzposh Ltd | Real estate | 2025 |
| Rehoboth Business Solutions Limited | Wholesale & retail | 2016 |
| Rehoboth Estates Ltd | Real estate | 2024 |
| Reids Royalties Ltd | Financial services | 2024 |
| Reign Agency Limited | Hospitality | 2026 |
| Rejoice Group Limited | Professional & scientific | 2024 |
| Rejuve Beauthetics Ltd | Other services | 2026 |
| REL Estates Ltd | Real estate | 2022 |
| Relax and Cake Ltd | Arts & recreation | 2018 |
| Relaxed City Living Ltd | Hospitality | 2022 |
| Reliable Rides Ltd | Transport & logistics | 2024 |
| Reliable Travels Ltd | Transport & logistics | 2023 |
| Reliance Caring Limited | Health & social care | 2019 |
| Reliance Live Ltd | Professional & scientific | 2025 |
| Relief Security Capital Ltd | Financial services | 2023 |
| Relinquo Holdings Limited | Wholesale & retail | 2018 |
| Relinquo Limited | Financial services | 2016 |
| Reluvia Limited | Other services | 2026 |
| Relysver Ltd | Wholesale & retail | 2024 |
| Remarquable Ltd | Wholesale & retail | 2022 |
| Remastered Limited | Real estate | 2017 |
| Remete Limited | Construction | 2017 |
| Remington Clinics Limited | Wholesale & retail | 2023 |
| Remlap Properties Limited | Real estate | 2018 |
| Remotecare GP Ltd | Health & social care | 2025 |
| Render Solutions Ltd | Construction | 2022 |
| Rendersmart Ltd | Extraterritorial | 2022 |
| Rendezvous Walsall Ltd | Hospitality | 2016 |
| Rendot Exhibitions Ltd | Construction | 2025 |
| Renew Properties Limited | Real estate | 2025 |
| Renewable Micro Solutions Ltd | Administrative & support | 2010 |
| Renima Limited | Wholesale & retail | 2019 |
| Rennoc Brickwork Ltd | Construction | 2024 |
| Renova Solutions Limited | Construction | 2025 |
| Renovate & Decor Ltd | Construction | 2024 |
| Rent My Room Limited | Real estate | 2025 |
| Rent Ready Homes Ltd | Real estate | 2024 |
| Rent Wise Property Management Ltd | Real estate | 2025 |
| Rental Guard Limited | Information & communication | 2026 |
| Rental Space Limited | Real estate | 2019 |
| Rentindeed Ltd | Hospitality | 2024 |
| Repair and Maintenance Services Limited | Wholesale & retail | 1984 |
| Repairs Ltd | Manufacturing | 2025 |
| Republiq Union Ltd | Manufacturing | 2020 |
| Reputable Construction Ltd | Construction | 2025 |
| Requery Ltd | Transport & logistics | 2024 |
| RES Real Estate (Holdings) Ltd | Real estate | 2019 |
| Resettle ME Ltd | Administrative & support | 2024 |
| Resforesha Ltd | Wholesale & retail | 2024 |
| Resgrores Ltd | Transport & logistics | 2024 |
| Residence Windows Limited | Manufacturing | 2011 |
| Resilientstars Limited | Health & social care | 2023 |
| Resin Craft Art Ltd | Manufacturing | 2025 |
| Resin Driveways Ltd | Construction | 2025 |
| Resolute Homes Limited | Real estate | 2026 |
| Resolution (Midlands) Limited | Information & communication | 2006 |
| Resquert Ltd | Transport & logistics | 2024 |
| Rest House Limited | Hospitality | 2014 |
| Restgest Ltd | Transport & logistics | 2024 |
| Resthery Ltd | Administrative & support | 2024 |
| Resthic Ltd | Administrative & support | 2024 |
| Resthium Ltd | Wholesale & retail | 2024 |
| Restinks Ltd | Wholesale & retail | 2024 |
| Retail Gazette Limited | Administrative & support | 2010 |
| Retail Management Group Ltd | Real estate | 2024 |
| Retail Project Management Limited | Construction | 2010 |
| Retail Property Services Ltd | Administrative & support | 2020 |
| RETAIL2RETAIL Limited | Information & communication | 2000 |
| Retech Electronics Limited | Manufacturing | 1989 |
| Reuben and Jorah Limited | Real estate | 2023 |
| Reveel Synergy Limited | Professional & scientific | 2026 |