| Redmile Energy Ltd | Construction | 2008 |
| Redondo Design Limited | Real estate | 2017 |
| Redrup Rural Limited | Professional & scientific | 2024 |
| Refr Ltd | Administrative & support | 2018 |
| Reid Commercial Consultancy Limited | Professional & scientific | 2004 |
| Relivita Limited | Wholesale & retail | 2025 |
| REP Global Services Limited | Wholesale & retail | 2025 |
| Residential Recruitment Ltd | Administrative & support | 2021 |
| Restorative Recovery Prescribing Ltd | Administrative & support | 2012 |
| Richwood Mews Management Company Limited | Administrative & support | 2010 |
| Ridings Farm Ltd | Agriculture & fishing | 2014 |
| Rigby Horticulture Limited | Wholesale & retail | 2023 |
| River Gwash Trout Farm Limited | Agriculture & fishing | 1997 |
| RKG Performance Ltd | Arts & recreation | 2019 |
| RL Construction Ltd | Construction | 2023 |
| ROB. Scotton Licensing Limited | Professional & scientific | 2004 |
| Robert Evans Catmose Limited | Transport & logistics | 2022 |
| Robert Kirkman Limited | Wholesale & retail | 1987 |
| Robin Tidd Management Limited | Professional & scientific | 1982 |
| Rocka-Buy Records Limited | Wholesale & retail | 2026 |
| Rocketlaunchpad Ltd | Wholesale & retail | 2024 |
| Roka Holdings Group Ltd | Financial services | 2025 |
| Roka Property Investments Ltd | Real estate | 2025 |
| ROL Services Limited | Information & communication | 2018 |
| ROL Solutions Ltd | Information & communication | 1999 |
| Rooftop Reports Limited | Administrative & support | 2006 |
| Root-And-Branch OUT CIC | Education | 2016 |
| Roots and Wings Psychology and Counselling Ltd | Extraterritorial | 2019 |
| Rose Group (Midlands) Ltd | Professional & scientific | 2019 |
| Rosie Thorn Limited | Hospitality | 2021 |
| Rosieandannieco Limited | Wholesale & retail | 2026 |
| Routeit Ltd | Wholesale & retail | 2024 |
| RS Technik Limited | Wholesale & retail | 2024 |
| RSJ New Homes Limited | Construction | 2014 |
| RTS Developments Ltd | Construction | 2021 |
| RTS Land Management Ltd | Real estate | 2025 |
| Rubidium Limited | Professional & scientific | 2005 |
| Rubinstein Keightley LLP | | 2023 |
| Rugby Boost Limited | Education | 2024 |
| Rumnstuff Ltd | Real estate | 2021 |
| Runcorn Architects Ltd | Professional & scientific | 2020 |
| Rural Travel Guide Ltd | Information & communication | 2022 |
| Ruralmums Limited | Information & communication | 2012 |
| Rutland Accounting Solutions Ltd | Professional & scientific | 2023 |
| Rutland Agricultural Society | Arts & recreation | 2018 |
| Rutland Air Conditioning Ltd | Construction | 2025 |
| Rutland and District Schools' Federation | Education | 2011 |
| Rutland and Stamford Sound Community Interest Company | Information & communication | 2020 |
| Rutland Bakery Limited | Wholesale & retail | 2026 |
| Rutland Beauty Space Ltd | Hospitality | 2021 |
| Rutland Bespoke Woodwork Limited | Construction | 2023 |
| Rutland Biodynamics Limited | Agriculture & fishing | 2002 |
| Rutland Cabinetmakers Limited | Manufacturing | 1991 |
| Rutland Construction Building Contractors and Groundworks Ltd | Construction | 2024 |
| Rutland Consultants Ltd | Professional & scientific | 2022 |
| Rutland Counselling Ltd | Professional & scientific | 2009 |
| Rutland Energy Assessors Ltd | Professional & scientific | 2009 |
| Rutland Film Office Limited | Information & communication | 2025 |
| Rutland Finance Limited | Financial services | 2019 |
| Rutland Fire Safety Limited | Manufacturing | 2016 |
| Rutland Foot Health Clinic Ltd | Health & social care | 2023 |
| Rutland Genie Tutoring Limited | Education | 2013 |
| Rutland Glamping UK LLP | | 2015 |
| Rutland Gourmet Limited | Hospitality | 2016 |
| Rutland Heating Ltd | Construction | 2020 |
| Rutland House & Inn Ltd | Hospitality | 2025 |
| Rutland House Community Trust Limited | Health & social care | 2004 |
| Rutland Irrigation Limited | Administrative & support | 2023 |
| Rutland Lavender Ltd | Agriculture & fishing | 2026 |
| Rutland Lettings Ltd | Real estate | 2021 |
| Rutland Medical Consultancy Limited | Health & social care | 2016 |
| Rutland Merchandise Ltd | Manufacturing | 2015 |
| Rutland Nursery Limited | Wholesale & retail | 1989 |
| Rutland Oak Construction and Restoration Ltd | Construction | 2025 |
| Rutland Operations Limited | Financial services | 2019 |
| Rutland Outdoor Education Centre Ltd | Education | 2021 |
| Rutland Outdoor Pursuits Ltd | Arts & recreation | 2022 |
| Rutland Plastics Holdings Ltd | Financial services | 2025 |
| Rutland Polo Club Limited | Arts & recreation | 2007 |
| Rutland Private Office Limited | Professional & scientific | 2025 |
| Rutland Property Maintenance Limited | Construction | 2010 |
| Rutland Recruitment Limited | Administrative & support | 2008 |
| Rutland Renewables Ltd | Construction | 2021 |
| Rutland Sailability | Arts & recreation | 1998 |
| Rutland Sailing Club Limited | Arts & recreation | 1973 |
| Rutland Security Ltd | Construction | 2022 |
| Rutland Showground Limited | Arts & recreation | 2013 |
| Rutland Sinfonia Productions Limited | Arts & recreation | 2019 |
| Rutland Stone Floor Restoration Ltd | Construction | 2021 |
| Rutland Surgical Technologies Limited | Professional & scientific | 2017 |
| Rutland Transfer Company Limited | Manufacturing | 2026 |
| Rutland Tree Care (Services) Ltd | Administrative & support | 2014 |
| Rutland Veterinary Centre Limited | Professional & scientific | 2004 |
| Rutland View Properties Limited | Real estate | 2025 |
| Rutland Water Golf Club Limited | Arts & recreation | 2010 |
| Rutland Worldwide Freight Limited | Transport & logistics | 1994 |
| Rutlinc Electrical Limited | Construction | 2025 |
| Rutlinc Limited | Households | 2025 |
| RW Padel Club Limited | Wholesale & retail | 2025 |
| Rwphillips OPS. Support Limited | Administrative & support | 2019 |