| Rimes Management Ltd | Wholesale & retail | 2021 |
| Ringers Construction Consultancy Ltd | Professional & scientific | 2020 |
| Rinky Infotec Limited | Information & communication | 2025 |
| RIO Oslo Health Care Limited | Health & social care | 2024 |
| Riri's Costumes Ltd | Information & communication | 2025 |
| Risborough Homes Ltd | Real estate | 2020 |
| Rise Motors Limited | Wholesale & retail | 2016 |
| Rise Space (Aylesbury) Ltd | Education | 2023 |
| Rise Space Holdings Limited | Financial services | 2024 |
| Rise Space Ltd | Education | 2020 |
| Rise Stream Ltd | Education | 2024 |
| Riseley Village Hall Bar Limited | Hospitality | 2003 |
| Risella Ltd | Wholesale & retail | 2025 |
| Rising Bhullar Construction Limited | Construction | 2021 |
| Ritchie & Watts Limited | Wholesale & retail | 1945 |
| Ritz Bingo Ltd | Arts & recreation | 2012 |
| River Court Bedford NO 2 RTM Company Limited | Households | 2018 |
| River Ouse Ltd | Extraterritorial | 2024 |
| Riveraloft Limited | Arts & recreation | 2003 |
| Riverdale Properties Ltd | Real estate | 2019 |
| Riverfield Property Management Limited | Real estate | 2020 |
| Riverinput Limited | Real estate | 2003 |
| Rivermead Court (Langford) Limited | Households | 1984 |
| Riverside Dairy Limited | Manufacturing | 2017 |
| Riverside Maintenance Company (Biggleswade) Limited | Households | 1981 |
| Riverside Management (Clapham) Limited | Real estate | 2012 |
| Riverside Mechanical & Engineering UK Ltd | Construction | 2017 |
| Riverside Walk (Great Barford) Residents Limited | Real estate | 2007 |
| Riversley Residential Holdings Ltd | Real estate | 2025 |
| Rizgen Limited | Wholesale & retail | 2020 |
| Rizon Solutions Europe Limited | Information & communication | 2023 |
| Rizon Solutions Limited | Information & communication | 2017 |
| Rizq Foods Ltd | Hospitality | 2020 |
| Rizwani’S Property Maintenance Ltd | Other services | 2025 |
| RJ Motors Ltd | Wholesale & retail | 2024 |
| RJC Construction Services Limited | Construction | 2018 |
| RJC Plant Hire Limited | Administrative & support | 2003 |
| Rjcg Electric (Southern) Limited | Construction | 2016 |
| RJL Chimneys Ltd | Administrative & support | 2020 |
| RJM Media Forwarding Limited | Transport & logistics | 2013 |
| RJM Property & Construction Services Ltd | Real estate | 2019 |
| RJM Property Management Limited | Real estate | 2020 |
| RJP Property Refurbishment Ltd | Construction | 2022 |
| RJS Electronics Limited | Wholesale & retail | 2003 |
| RK Building & Maintenance Ltd | Construction | 2010 |
| RK the Pleasance Ltd | Real estate | 2025 |
| RK Trading Express Ltd | Wholesale & retail | 2024 |
| RKB Bedford Limited | Hospitality | 2017 |
| RKC Electricals Ltd | Construction | 2023 |
| RKL Coaching Ltd | Arts & recreation | 2024 |
| RKM Software Solutions Ltd | Information & communication | 2015 |
| Rkmk Ltd | Transport & logistics | 2025 |
| RKP Flooring Ltd | Construction | 2020 |
| RL Investment Management Ltd | Administrative & support | 2010 |
| RLP HR Systems Consultancy Limited | Administrative & support | 2018 |
| RLS PUB Management Ltd | Hospitality | 2025 |
| Rltk Properties Limited | Real estate | 2021 |
| RM Clinical Insourcing Ltd | Administrative & support | 2016 |
| RM Medics Ltd | Administrative & support | 2012 |
| RM Textile Consultancy Limited | Other services | 2024 |
| RMC Electrical Contractors Limited | Construction | 2018 |
| RMC Fire Systems Limited | Administrative & support | 2026 |
| RMC Wealth Management LLP | | 2009 |
| RMF Sports Consulting Limited | Professional & scientific | 2019 |
| RMG Building Limited | Construction | 2014 |
| RMH4 Limited | Other services | 2025 |
| RML Holiday Lettings Limited | Real estate | 2021 |
| RMN Consultants Limited | Professional & scientific | 2011 |
| RMV Media Limited | Wholesale & retail | 2025 |
| RMW Asset Management Ltd | Financial services | 2018 |
| RMW Dentistry Ltd | Health & social care | 2020 |
| RN Ciara Aesthetics Limited | Other services | 2019 |
| RNB Transmissions Ltd | Wholesale & retail | 2017 |
| RND Events Ltd | Professional & scientific | 2015 |
| RNL Kitchens Limited | Construction | 2015 |
| RNP Estates LLP | | 2019 |
| RNR Housing Ltd | Real estate | 2022 |
| RNS Continental Ltd | Transport & logistics | 2019 |
| RNS Media & Productions Ltd | Information & communication | 2025 |
| RNW Stratconsult Limited | Professional & scientific | 2019 |
| RO Discus Ltd | Transport & logistics | 2019 |
| RO Little Constructor Ltd | Construction | 2020 |
| ROA Homes Ltd | Construction | 2022 |
| Road Race Rally Engineering Limited | Wholesale & retail | 2014 |
| Road to Race Ltd | Wholesale & retail | 2020 |
| Roadrower Limited | Wholesale & retail | 2015 |
| Roar Porridge Ltd | Manufacturing | 2019 |
| Roasto & More Ltd | Hospitality | 2025 |
| ROB Fletcher Land Based Training & Assessment Ltd | Agriculture & fishing | 2013 |
| ROB J Holloway Limited | Information & communication | 2023 |
| ROB Miller Electrical Services Limited | Construction | 2007 |
| Robbie Woolf Ltd | Arts & recreation | 2021 |
| Robert Bellew Accounting Ltd | Professional & scientific | 2016 |
| Robert Hayes Properties Ltd | Real estate | 2022 |
| Robert Ptaszynski Ltd | Transport & logistics | 2017 |
| Robertb Haulage Limited | Transport & logistics | 2023 |
| Roberts Rooftops Ltd | Construction | 2023 |
| Roberts Vickers Limited | Professional & scientific | 2023 |
| Robest Healthcare Limited | Health & social care | 2017 |
| Robin Healthcare Services Ltd | Health & social care | 2021 |