| Raglan Pharmacy Limited | Wholesale & retail | 2016 |
| Ragnotella Ltd | Administrative & support | 2016 |
| Ragreen Production Limited | Information & communication | 2025 |
| Ragu & Aron Properties Ltd | Real estate | 2017 |
| Raha Aesthetics Ltd | Other services | 2023 |
| Rahal Group Financial Brokerage Limited | Financial services | 2021 |
| Rahbar Fashions Ltd | Wholesale & retail | 2026 |
| Raheem Housing Limited | Real estate | 2025 |
| Rahi and Razel's Limited | Hospitality | 2022 |
| Rahim BAH Ltd | Education | 2020 |
| RAHIM2023 Ltd | Wholesale & retail | 2023 |
| Rahma Holdings Ltd | Real estate | 2021 |
| Rahman Consulting Services Ltd | Professional & scientific | 2026 |
| Raicu Ltd | Wholesale & retail | 2026 |
| Raidho Inc Ltd | Information & communication | 2021 |
| Rail Personnel Tools and Equipment Hire Ltd | Transport & logistics | 2025 |
| Rail Plant Services Limited | Professional & scientific | 2016 |
| Rail-Way Consulting LLP | | 2025 |
| Railfacey Limited | Extraterritorial | 2019 |
| Railroadeduklimited Limited | Other services | 2019 |
| Railway Inn Newnham Ltd | Hospitality | 2018 |
| Railway Resistance Ltd | Extraterritorial | 2012 |
| Rain for Trade Ltd | Wholesale & retail | 2024 |
| Rain Trading Ltd | Wholesale & retail | 2014 |
| Rainbow Bargain Ltd | Wholesale & retail | 2009 |
| Rainbow Homes Management Ltd | Real estate | 2020 |
| Rainbow UK Import & Export Ltd | Transport & logistics | 2015 |
| Rainbow Valley Holdings Ltd | Extraterritorial | 2019 |
| RAINBOW5 Limited | Wholesale & retail | 2017 |
| Rainbowplus Tour Ltd | Administrative & support | 2025 |
| Rainbowstoic. Ltd | Information & communication | 2021 |
| Raindroproot Ltd | Wholesale & retail | 2025 |
| Raine & Shine Cleaning Co. Limited | Administrative & support | 2024 |
| Rainier Management Services Ltd | Real estate | 2023 |
| Rainton Bridge Group Ltd | Information & communication | 2021 |
| Rainton H Group Limited | Professional & scientific | 2023 |
| Rainware Ltd | Financial services | 2021 |
| Raisabe Global Ltd | Wholesale & retail | 2025 |
| Raisdale House Management Company Ltd | Households | 2005 |
| Raise Capital Group Limited | Financial services | 2017 |
| Raisin GmbH Ltd | Financial services | 2026 |
| Raisin Startzins Ltd | Wholesale & retail | 2026 |
| Raising Entrepreneurs CIC | Education | 2024 |
| Raising Finance Club Ltd | Education | 2022 |
| Raisny Security Solutions Ltd | Information & communication | 2015 |
| RAJ Beauty & Wellness Ltd | Other services | 2022 |
| RAJ Kinara Limited | Hospitality | 2010 |
| Raj's 59 Stop Ltd | Wholesale & retail | 2016 |
| Raja Kumarasamy Limited | Administrative & support | 2019 |
| Raja World Ltd | Wholesale & retail | 2017 |
| Raja Zubair Builders Limited | Construction | 2026 |
| Rajkam Limited | Real estate | 2026 |
| Rajkumar Chinnusamy Ltd | Construction | 2019 |
| Rajp Ltd | Financial services | 2014 |
| Rajsarma UK Limited | Construction | 2020 |
| Rajus Connect Ltd | Information & communication | 2019 |
| Rakaiz Al-Ilm Al-Wataniya for Investment Ltd | Wholesale & retail | 2025 |
| Rake's Residentials Limited | Real estate | 2024 |
| Rakechoice Limited | Construction | 1986 |
| Raki Investments Limited | Real estate | 2020 |
| Rako Capital Limited | Real estate | 2024 |
| Ralfco Limited | Administrative & support | 2022 |
| Rallegra Limited | Wholesale & retail | 2016 |
| Rally Ranch Hangout CIC | Wholesale & retail | 2025 |
| Rallyrace Ltd | Administrative & support | 2014 |
| Ralph Hugo Leases Limited | Real estate | 2024 |
| Ralph Hugo Lettings Ltd | Real estate | 2019 |
| Ralph Trading Ltd | Administrative & support | 2017 |
| Ralph's Cardiff Limited | Hospitality | 2019 |
| Ralro Properties Ltd | Real estate | 2025 |
| RAM for Maintenance and Renovations Ltd | Construction | 2025 |
| RAM Motors Cardiff Ltd | Wholesale & retail | 2020 |
| RAM RE Ltd | Real estate | 2020 |
| RAM Tawar Limited | Education | 2014 |
| RAM Utility Partnership Limited | Administrative & support | 2026 |
| Ram's Hospitality Ltd | Hospitality | 2020 |
| Ramadan Business Group Limited | Extraterritorial | 2025 |
| Ramadan Ecom Ltd | Wholesale & retail | 2025 |
| Ramakom Ltd | Information & communication | 2024 |
| Ramana Alliance PC | | 2016 |
| Ramazan Mustafaj Limited | Wholesale & retail | 2025 |
| Rames Trading Ltd | Information & communication | 2025 |
| Ramiz Consulting Ltd | Information & communication | 2024 |
| Ramiz QR Ltd | Wholesale & retail | 2025 |
| Ramm Contract Furnishing (Europe) Limited | | 1987 |
| Ramohive Ltd | Information & communication | 2025 |
| Ramon Moore Limited | Hospitality | 1966 |
| Ramon Transport Ltd | Transport & logistics | 2023 |
| Ramosteel Ltd | Construction | 2019 |
| Rampant Lion Music Limited | Manufacturing | 2013 |
| Rams Consultancy Limited | Professional & scientific | 2015 |
| Ramsey Sabit Ltd | Education | 2018 |
| Ramsgate Bodrum Ltd | Hospitality | 2019 |
| Ramsgen Ltd | Information & communication | 2025 |
| Ramsota Limited | Construction | 2025 |
| Ramsynax Ltd | Professional & scientific | 2025 |
| Ramy Car Sales Ltd | Wholesale & retail | 2022 |
| Ramya Technologies Ltd | Information & communication | 2026 |
| Ramzi Builders Limited | Construction | 2024 |
| Rana G Ltd | Construction | 2026 |