| R&J Property Services Limited | Real estate | 2020 |
| R&O Logic Ltd | Transport & logistics | 2020 |
| R&R Motors Bedford Ltd | Wholesale & retail | 2023 |
| R&S Property Investment Services Ltd | Real estate | 2026 |
| R&V Carpentry Ltd | Manufacturing | 2016 |
| R&V Construct Ltd | Construction | 2024 |
| R-Line Plumbing and Heating Ltd | Construction | 2020 |
| R-Tec Services & Innovation Ltd | Manufacturing | 2007 |
| R.A.C. Properties Limited | Financial services | 1959 |
| R.B. Heliservices Limited | Manufacturing | 2006 |
| R.Benson Properties Limited | Real estate | 2025 |
| R.G.R. Garages (Cranfield) Limited | Wholesale & retail | 1978 |
| R.J. Contracts Limited | Construction | 1998 |
| R.Mall Ltd | Transport & logistics | 2023 |
| R.T.C.C. Training Consultancy Company 1993 Limited | Administrative & support | 1993 |
| R1K Consulting Ltd | Professional & scientific | 2019 |
| R5D Ltd | Construction | 2021 |
| R9 Investments Limited | Construction | 1991 |
| RA85 Limited | Wholesale & retail | 2017 |
| Rachel Dunford Consulting Ltd | Education | 2019 |
| Rachel Scotney Healthcare Ltd | Other services | 2014 |
| Racing Digital Limited | Information & communication | 2020 |
| Racma Social Care Consultancy Limited | Health & social care | 2025 |
| Radiant Diagnostics Ltd | Professional & scientific | 2025 |
| Radical Self-Care Movement Ltd | Other services | 2023 |
| Radio Communications Online Limited | Information & communication | 2005 |
| Radio Society of Great Britain | Information & communication | 1926 |
| Radioness Ltd | Health & social care | 2025 |
| Raducon Ltd | Wholesale & retail | 2023 |
| Raecad 3D Ltd | Construction | 2020 |
| Raeni Days Limited | Real estate | 2025 |
| Raes Tanning and Beauty Limited | Other services | 2023 |
| Raes Tanning Ltd | Other services | 2026 |
| Raetel Limited | Professional & scientific | 2003 |
| Raffles Medical Ltd | Health & social care | 2012 |
| Raffo, Pape & Woodward Ltd | Other services | 1987 |
| Rafi Welding Services Ltd | Manufacturing | 2018 |
| Raficoncept Ltd | Wholesale & retail | 2026 |
| Ragdoll Media Ltd | Wholesale & retail | 2022 |
| Ragh Limited | Hospitality | 2015 |
| Raghvendra Properties Limited | Real estate | 2025 |
| Ragu Restaurant Ltd | Hospitality | 2024 |
| Rahaman Limited | Public administration | 2022 |
| Rahman Brother's Properties Ltd | Households | 2020 |
| Rahman Finance & Co Ltd | Real estate | 2023 |
| Rai's Real Estates Ltd | Real estate | 2023 |
| Rai's Rental Properties Ltd | Real estate | 2024 |
| Railbod Ltd | Professional & scientific | 2014 |
| Rainbow Art RS Limited | Hospitality | 2023 |
| Rainbow Arts Food Franchising Limited | Hospitality | 2023 |
| Rainbow Automotive Ltd | Wholesale & retail | 2026 |
| Rainbow Bedfordshire Events C.I.C. | Education | 2023 |
| Rainbow Hand Car Wash Ltd | Administrative & support | 2019 |
| Rainbow Mobile Car Buffing Services Ltd | Administrative & support | 2024 |
| Raine and Co (Letchworth Garden City) Ltd | Real estate | 2026 |
| Raise Global Innovation Forum | Professional & scientific | 2024 |
| RAJ & ANI Business Solutions Limited | Hospitality | 2024 |
| RAJ Curry Ltd | Hospitality | 2026 |
| RAJ Kapur Ltd | Wholesale & retail | 2026 |
| RAJ Punjabi Kitchen Ltd | Hospitality | 2025 |
| RAJ Singh Consulting Limited | Wholesale & retail | 2018 |
| Rajapack Limited | Wholesale & retail | 1995 |
| Rajay Ltd | Real estate | 2013 |
| Rajcar Ltd | Wholesale & retail | 2015 |
| Raji IT Services Ltd | Information & communication | 2022 |
| Ral-Col Limited | Transport & logistics | 1987 |
| Raleigh Motors Ltd | Wholesale & retail | 2024 |
| Ralfreight Limited | Transport & logistics | 2018 |
| Rally Ltd | Wholesale & retail | 2018 |
| Rally Wellness Limited | Health & social care | 2025 |
| RAM & Co Bedford Capital Group Ltd | Real estate | 2025 |
| RAM and Bangher Investments Limited | Real estate | 2025 |
| RAM Building Consultancy Ltd | Construction | 2000 |
| RAM Roofing & Scaffolding Limited | Construction | 2022 |
| RAM Sky Properties Ltd | Real estate | 2025 |
| Ramblewells Ltd | Wholesale & retail | 2003 |
| Ramoram Services Limited | Transport & logistics | 2022 |
| Ramos Ltd | Construction | 2024 |
| Rampair Group Ltd | Transport & logistics | 2024 |
| Ramzz Ltd | Real estate | 2023 |
| Rana Riders Limited | Transport & logistics | 2024 |
| Rana TM Ltd | Construction | 2025 |
| Rana Traders 2 Ltd | Wholesale & retail | 2024 |
| Randall & Hopkirk Ltd | Transport & logistics | 2014 |
| Randall Records Ltd | Hospitality | 2023 |
| Ranudrive Ltd | Transport & logistics | 2018 |
| Raozee Homes Ltd | Hospitality | 2024 |
| RAP Design Limited | Manufacturing | 1983 |
| Rapid Air Conditioning Limited | Administrative & support | 2018 |
| Rapid Investors Limited | Real estate | 2018 |
| Rapid Movement Ltd | Transport & logistics | 2023 |
| Rapid Property Trading UK Ltd | Real estate | 2025 |
| Rapid Rugs Ltd | Wholesale & retail | 2003 |
| Raptor Investments (ST Albans) Ltd | Financial services | 2023 |
| Raqs Ltd | Professional & scientific | 2017 |
| Rare Gems and Treasures Limited | Wholesale & retail | 2025 |
| Rari Beauty Laser Ltd | Other services | 2024 |
| RAS Data Support Limited | Information & communication | 1998 |
| RAS Machinery Limited | Manufacturing | 2017 |
| RAS Trading Limited | Wholesale & retail | 2025 |