| Raventium Ltd | Wholesale & retail | 2025 |
| Ravenwoodhandmade Ltd | Wholesale & retail | 2025 |
| Ravinder Ecom Ltd | Wholesale & retail | 2026 |
| Ravingmad Entertainment Limited | Arts & recreation | 2018 |
| Ravkal Health Ltd | Health & social care | 2025 |
| Ravonel Ltd | Education | 2025 |
| RAW Denim UK Ltd | Wholesale & retail | 2018 |
| RAW Dog Food Kent Ltd | Financial services | 2018 |
| RAW Pet Supplies Ltd | Wholesale & retail | 2013 |
| RAW Sky Limited | Wholesale & retail | 2023 |
| Raw-Sense Limited | Hospitality | 2019 |
| Rawae Al-Saadah LIL Tijarah Ltd | Wholesale & retail | 2026 |
| Rawae Amjad AL Aamal Investment Limited | Wholesale & retail | 2025 |
| Rawdah Tours Ltd | Administrative & support | 2025 |
| Rawe Deliveries Ltd | Transport & logistics | 2019 |
| Rawendy Ltd | Wholesale & retail | 2025 |
| Rawnaq Altawfir and Investment Limited | Wholesale & retail | 2025 |
| Raxstar Limited | Water & waste | 1979 |
| Raxviro Ltd | Wholesale & retail | 2026 |
| RAY Holman Design Limited | Administrative & support | 2002 |
| RAY Neale Ltd | Construction | 2023 |
| Ray&Brown Ltd | Real estate | 2021 |
| Ray-V Technology Co., Ltd | Extraterritorial | 2020 |
| Rayaan Enterprises Limited | Extraterritorial | 2026 |
| Rayal & Rayal Limited | Professional & scientific | 2016 |
| Rayan Construction Group Ltd | Construction | 2020 |
| Rayan Wellfield Ltd | Hospitality | 2016 |
| Rayanhd Ltd | Wholesale & retail | 2025 |
| Rayband Entreprises Limited | Wholesale & retail | 2020 |
| Raycast Ltd | Information & communication | 2025 |
| Rayco Group Ltd | Financial services | 2019 |
| Raydeo Limited | Information & communication | 2017 |
| Raydom Ltd | Wholesale & retail | 2021 |
| Rayfield Lettings and Maintenance Ltd | Households | 2025 |
| Raylands Ltd | Health & social care | 2024 |
| Rayleigh Pizza Limited | Administrative & support | 2018 |
| Raymond Smith Limited | Real estate | 2013 |
| Raymond Supplies Ltd | Wholesale & retail | 2012 |
| Rayner Electrical Services Ltd | Construction | 2019 |
| Rayner Johnson Limited | Extraterritorial | 2026 |
| Raynlea Ltd | Construction | 2021 |
| Raynolds & Associates Limited | Professional & scientific | 2016 |
| Raystar Trade LLP | | 2010 |
| Raytech Talent Limited | Administrative & support | 2026 |
| Rayvor Ltd | Manufacturing | 2018 |
| Raywoods Leisure Ltd | Arts & recreation | 2015 |
| Rayyan Food Limited | Hospitality | 2025 |
| Rayyes Limited | Manufacturing | 2017 |
| Rayze Ltd | Information & communication | 2025 |
| Rayzic Limited | Information & communication | 2025 |
| RAZ Auto Engineer Limited | Wholesale & retail | 2024 |
| RAZ Valery Money Exchange Ltd | Financial services | 2026 |
| Raza Centre (Leicester) | Other services | 2008 |
| Razay Limited | Wholesale & retail | 2026 |
| Razhana Ltd | Wholesale & retail | 2024 |
| Razialogistics Limited | Wholesale & retail | 2025 |
| Razzaz Import & Export Co., Ltd | Wholesale & retail | 2021 |
| Razzvan Limited | Construction | 2010 |
| RB Decorating Contractors Ltd | Construction | 2016 |
| RB Plumb and Heat Ltd | Construction | 2024 |
| RB Prop (Nottingham) Ltd | Real estate | 2018 |
| RB Trading Services Limited | Construction | 2026 |
| RB Yacht Services Ltd | Wholesale & retail | 2024 |
| RBB (UK) Ltd | Wholesale & retail | 2024 |
| RBC Consultancy Limited | Professional & scientific | 2024 |
| RBC Couriers Ltd | Transport & logistics | 2017 |
| RBC Railway Ltd | Hospitality | 2025 |
| RBCONSTRUCTION1 Ltd | Construction | 2025 |
| RBG Property Investments Limited | Real estate | 2021 |
| RBI Enterprises Limited | Information & communication | 2024 |
| RBK International UK Limited | Wholesale & retail | 2018 |
| RBK Logistic Ltd | Financial services | 2020 |
| RBT CZ Limited | Construction | 2019 |
| Rbvugse Mart Ltd | Wholesale & retail | 2025 |
| RC Cardiff Ltd | Hospitality | 2017 |
| RC Groundwork and Landscaping Ltd | Construction | 2019 |
| RC Investment Group Ltd | Professional & scientific | 2016 |
| RC System (UK) Limited | Real estate | 2008 |
| RCA 1983 Ltd | Professional & scientific | 2021 |
| RCA Associates Ltd | Professional & scientific | 2016 |
| RCA Corporate Finance Limited | Professional & scientific | 2020 |
| RCB Investments Ltd | Real estate | 2021 |
| Rccg Cardiff Metropolitan Tabernacle | Other services | 2025 |
| RCD Electrics Ltd | Construction | 2026 |
| RCD Finance Limited | Financial services | 2005 |
| Rcdjtnhitn Trading Ltd | Wholesale & retail | 2025 |
| RCE Assistance Ltd | Administrative & support | 2021 |
| Rcem Limited | Professional & scientific | 2020 |
| Rcharb Hchings Ltd | Wholesale & retail | 2025 |
| Rcma Social Enterprise Limited | Hospitality | 2003 |
| RCN Law LLP | | 2015 |
| Rcon-Uk Limited | Construction | 2025 |
| RCP International Ltd | Professional & scientific | 2017 |
| RCP Solutions 1 Ltd | Construction | 2026 |
| RCP Solutions 2 Ltd | Construction | 2026 |
| RCR Solutions Ltd | Information & communication | 2015 |
| Rcrs Group Ltd | Professional & scientific | 2024 |
| RCS Aerospace Solutions Ltd | Administrative & support | 2015 |
| RCT 1 Holdings Limited | Financial services | 2022 |
| RCT 1 Limited | Construction | 2022 |