| Rahmya Ltd | Real estate | 2022 |
| Rahul Basu Limited | Health & social care | 2018 |
| Rahul Gandhi Ltd | Health & social care | 2013 |
| Rahul Manisha Properties Ltd | Real estate | 2026 |
| RAI Coffee Shop Limited | Hospitality | 2026 |
| RAI Saab Hucknall Limited | Hospitality | 2024 |
| RAI Saab Ltd | Hospitality | 2020 |
| Raibank Gardens Management Company | Households | 1982 |
| Rail Industry Contractors Association Ltd | Construction | 1999 |
| Rail Master Ltd | Construction | 2020 |
| Railway Overhead Line Engineering (R.O.L.E.) UK Ltd | Professional & scientific | 2015 |
| Railway Sleepers Holdings Ltd | Financial services | 2021 |
| Railway Sleepers Ltd | Wholesale & retail | 2017 |
| Railway Technical Engineering Services Ltd | Manufacturing | 2022 |
| Rain Defence Roofing Ltd | Construction | 2017 |
| Rainbow Horses Learning Centre CIC | Agriculture & fishing | 2011 |
| Rainbow Jersey Limited | Manufacturing | 1997 |
| Rainbow Repairs Limited | Real estate | 2014 |
| Rainbowl Ltd | Hospitality | 2024 |
| Rainbowls Cheltenham Limited | Hospitality | 2022 |
| Rainbowls Oxford Limited | Hospitality | 2023 |
| Raindrop Clean Group Ltd | Wholesale & retail | 2022 |
| Raine-Fenning Consultancy Limited | Professional & scientific | 2019 |
| Raine-Fenning Property Management Limited | Real estate | 2019 |
| Rainforest Bidco Limited | Financial services | 2022 |
| Rainforest Midco Limited | Financial services | 2022 |
| Rainforest Topco Limited | Financial services | 2022 |
| Rainworth OFF Licence and Groceries Limited | Wholesale & retail | 2017 |
| Raisa Beauty Ltd | Other services | 2025 |
| Raithbys Building Services Ltd | Construction | 2018 |
| RAJ & Company Property Limited | Real estate | 2012 |
| RAJ (Nottingham) Properties Ltd | Real estate | 2016 |
| RAJ Aujla Property LLP | | 2021 |
| RAJ Bro's Ltd | Hospitality | 2026 |
| RAJ Medical Services Limited | Health & social care | 2010 |
| RAJ Plumbing Services Ltd | Construction | 2016 |
| RAJ Singh Sehdev Real Estate Services Ltd | Real estate | 2018 |
| Raja Movers Ltd | Transport & logistics | 2026 |
| Raja Property Raza Ltd | Real estate | 2023 |
| Rajasunited Real Estate Limited | Real estate | 2020 |
| Rajila Limited | Professional & scientific | 2002 |
| Rajmah Group Ltd | Information & communication | 2026 |
| Rajouri Limited | Hospitality | 2025 |
| Rajput Legacy Ltd | Wholesale & retail | 2026 |
| Rajsun Limited | Information & communication | 2019 |
| RAK Horizon Estates Ltd | Real estate | 2025 |
| Raka Builders Ltd | Construction | 2025 |
| Rakesdale House Ltd | Households | 2016 |
| Rakha Pathology Limited | Health & social care | 2018 |
| Rakkii Ltd | Wholesale & retail | 2024 |
| Rakshil Ltd | Households | 2021 |
| Rakuevents Ltd | Administrative & support | 2022 |
| RAL Ice Cream and Catering Limited | Hospitality | 2002 |
| Raleigh Education Trust | Education | 2017 |
| Raleigh Holdings Ltd | Wholesale & retail | 1903 |
| Raleigh Pension Scheme Trustee | Financial services | 2025 |
| Raleigh Street Developments Limited | Real estate | 2020 |
| Ralhan India Limited | Professional & scientific | 2017 |
| Ralhan Limited | Professional & scientific | 2014 |
| Ralixo Ltd | Wholesale & retail | 2025 |
| Rally Yard Limited | Wholesale & retail | 2025 |
| Ralph Edward Furniture Limited | Manufacturing | 2017 |
| RAM Phoenix Global Limited | Hospitality | 2024 |
| RAM Servicing and MOT Ltd | Wholesale & retail | 2017 |
| Rama Prime Limited | Information & communication | 2019 |
| Ramb Trade Ltd | Wholesale & retail | 2018 |
| Ramdevi Properties Limited | Real estate | 2025 |
| Ramin Home Repairs Ltd | Construction | 2024 |
| Ramjak Limited | Agriculture & fishing | 2017 |
| Ramlah Education and Training Centre Ltd | Education | 2024 |
| Rammsanderson Ecology Limited | Professional & scientific | 2014 |
| Rammsanderson Training Ltd | Education | 2019 |
| Ramona Kate Tattoo Ltd | Other services | 2017 |
| Ramowski Clarke Limited | Construction | 1999 |
| Rampage Wargames Ltd | Arts & recreation | 2023 |
| Rampant INK Limited | Other services | 2021 |
| Rampart Associates Limited | Professional & scientific | 2018 |
| Rampe YUM Limited | Hospitality | 2025 |
| Ramsar Eastwood Mini Market Limited | Wholesale & retail | 2025 |
| Ramsar Mini Market Limited | Wholesale & retail | 2025 |
| Ramsay Transport Limited | Transport & logistics | 2018 |
| Ramscapes Holdings Limited | Financial services | 2020 |
| Ramtech Electronics Limited | Manufacturing | 1990 |
| Ramtuc | Other services | 2013 |
| Ramzey Limited | Health & social care | 2021 |
| Ramzy Automotive Ltd | Wholesale & retail | 2021 |
| RAN Transport & Logistics Ltd | Transport & logistics | 2024 |
| Rana & Son's Ltd | Wholesale & retail | 2025 |
| Rana and Co Accountants (Nottingham) Ltd | Professional & scientific | 2017 |
| Rana Asset Management Ltd | Real estate | 2021 |
| Rana Industries Limited | Health & social care | 2015 |
| Ranby Investments Limited | Professional & scientific | 2015 |
| Ranch Heroes Ltd | Information & communication | 2012 |
| Randle-Williams Consulting Ltd | Professional & scientific | 2026 |
| Randmpropertymanagment Ltd | Households | 2025 |
| Random Robot Ltd | Information & communication | 2018 |
| Randr Projects Limited | Construction | 2016 |
| Raneeki Holding Limited | Administrative & support | 2023 |
| Ranger ROB UK Limited | Information & communication | 2015 |
| Rani Transport Ltd | Transport & logistics | 2017 |