| Rodo Interiors Limited | Construction | 2023 |
| ROE Consulting Limited | Information & communication | 2012 |
| Roexit Limited | Transport & logistics | 2017 |
| Roger Staton Associates Limited | Extraterritorial | 2003 |
| Rohlad Solutions Limited | Information & communication | 2023 |
| Rolling Transport Ltd | Transport & logistics | 2014 |
| Rolours Ltd | Wholesale & retail | 2018 |
| Romans Haus Ltd | Wholesale & retail | 2015 |
| Romeo Trans Limited | Transport & logistics | 2016 |
| Romi Machines UK Limited | Manufacturing | 1973 |
| Ronkus Ltd | Health & social care | 2023 |
| Room to Grow Properties Limited | Real estate | 2017 |
| Roots N Rise Psychotherapy and Counselling Limited | Health & social care | 2026 |
| Roro Production Ltd | Information & communication | 2026 |
| Rose Narrowboats Limited | Transport & logistics | 1971 |
| Rose&Co Ltd | Wholesale & retail | 2016 |
| Rosevalley Midlands Limited | Construction | 2002 |
| Roseville Strategic Land Limited | Real estate | 2026 |
| Rosie Marshall Ltd | Administrative & support | 2025 |
| Rosszcsont Ltd | Transport & logistics | 2016 |
| Rovith Consultancy Services Limited | Information & communication | 2017 |
| Rowcroft Property Management LLP | | 2026 |
| Rowgate Properties Limited | Real estate | 2010 |
| Royale Spaces Limited | Real estate | 2024 |
| RP & SJ Enterprise Ltd | Hospitality | 2025 |
| RP Golden Transport Limited | Transport & logistics | 2008 |
| RP Optical Ltd | Wholesale & retail | 2020 |
| RP2 Solutions PVT Ltd | Other services | 2015 |
| RR Diagnostics and Interventions Ltd | Health & social care | 2016 |
| RR Global Ventures Limited | Wholesale & retail | 2024 |
| RS Global Holdings Ltd | Wholesale & retail | 2016 |
| RSA Delta Limited | Professional & scientific | 2017 |
| Rsap Solutions Limited | Information & communication | 2024 |
| Rsdp Ltd | Real estate | 2019 |
| RSH Blythe Properties Limited | Households | 2025 |
| RST Music Limited | Wholesale & retail | 2013 |
| Rsvs Properties Limited | Real estate | 2023 |
| RT Precision Plumbing Ltd | Construction | 2024 |
| RT Utilities Consultant Ltd | Professional & scientific | 2026 |
| Rtjh Limited | Real estate | 2025 |
| Rubens Coffee Limited | Hospitality | 2013 |
| Rubicon Electrical Installations Limited | Construction | 2024 |
| Ruck Consulting Ltd | Professional & scientific | 2023 |
| Rudy Films Limited | Information & communication | 2013 |
| Rufus Court Service Charge Ltd | Households | 2024 |
| Rugby (E) Hairdressing Limited | Other services | 2015 |
| Rugby 1823 Ltd | Professional & scientific | 2020 |
| Rugby Aesthetics Ltd | Other services | 2022 |
| Rugby African Shop Ltd | Wholesale & retail | 2022 |
| Rugby Aquatics Ltd | Wholesale & retail | 2019 |
| Rugby ASH Court Management Limited | Real estate | 1990 |
| Rugby Bargain Tyres Limited | Wholesale & retail | 2025 |
| Rugby Beauty Salon Ltd | Other services | 2025 |
| Rugby Borough in the Community | Education | 2021 |
| Rugby Borough Sports Trust (Trading) Limited | Arts & recreation | 2016 |
| Rugby Borough Sports Trust Limited | Arts & recreation | 2004 |
| Rugby Chiropractic Limited | Health & social care | 2002 |
| Rugby Communication Centre Limited | Information & communication | 2025 |
| Rugby Consultants Limited | Professional & scientific | 2016 |
| Rugby Direct Cremations Ltd | Other services | 2026 |
| Rugby Distribution Ltd | Construction | 2026 |
| Rugby Double Glazing Limited | Construction | 2011 |
| Rugby DRY Cleaners Limited | Other services | 2008 |
| Rugby Elite Bodyworks Limited | Wholesale & retail | 2017 |
| Rugby Engineering Solutions Limited | Manufacturing | 2019 |
| Rugby Extensions & Building Works Limited | Administrative & support | 2014 |
| Rugby Exterior Cleaning Ltd | Administrative & support | 2024 |
| Rugby Farrier Ltd | Agriculture & fishing | 2017 |
| Rugby Florist Limited | Wholesale & retail | 2011 |
| Rugby Football Club Community Sports CIC | Arts & recreation | 2025 |
| Rugby Fuel Supplies Limited | Real estate | 1963 |
| Rugby GIN Co Ltd | Manufacturing | 2020 |
| Rugby Golf Club Limited | Arts & recreation | 1957 |
| Rugby Grill Ltd | Hospitality | 2025 |
| Rugby Ground Information Limited | Professional & scientific | 1988 |
| Rugby Ground Support Ltd | Construction | 2021 |
| Rugby Groundworks Limited | Construction | 2019 |
| Rugby Guttering and Fascia Ltd | Administrative & support | 2024 |
| Rugby Gymnastics Club Trading Company Ltd | Arts & recreation | 2026 |
| Rugby Health Limited | Health & social care | 2020 |
| Rugby Healthcare Ltd | Health & social care | 2023 |
| Rugby High School Academy Trust | Education | 2011 |
| Rugby Holdings Residential Limited | Real estate | 2018 |
| Rugby Housing Management Ltd | Households | 2024 |
| Rugby Kirtan Community CIC | Other services | 2026 |
| Rugby Lions Football Club (2009) (Stadium) Limited | Arts & recreation | 2013 |
| Rugby Lions Football Club (2009) Limited | Arts & recreation | 2009 |
| Rugby Locksmiths Ltd | Extraterritorial | 2021 |
| Rugby Manufacturing Services Limited | Manufacturing | 1992 |
| Rugby Minimarket Ltd | Wholesale & retail | 2023 |
| Rugby Mobile Windscreens Ltd | Wholesale & retail | 2011 |
| Rugby Music Centre CIC | Arts & recreation | 2021 |
| Rugby Nails Ltd | Other services | 2021 |
| Rugby OP Limited | Health & social care | 2024 |
| Rugby Padel Limited | Real estate | 2020 |
| Rugby Paper Sacks Limited | Wholesale & retail | 2003 |
| Rugby Pest Control Ltd | Administrative & support | 2018 |
| Rugby Physiotherapy & Sports Injury Clinic Ltd | Health & social care | 2003 |
| Rugby Pitstop Autoservice Ltd | Wholesale & retail | 2025 |
| Rugby Polo Club Limited | Professional & scientific | 2000 |