| Rugby Properties Limited | Real estate | 2012 |
| Rugby Property Assets Limited | Real estate | 1986 |
| Rugby Property Maintenance Ltd | Construction | 2019 |
| Rugby Publications Limited | Information & communication | 2007 |
| Rugby Recovery Limited | Transport & logistics | 2014 |
| Rugby Recycle Ltd | Other services | 2018 |
| Rugby Recycling Company Limited | Extraterritorial | 2024 |
| Rugby Renewables Limited | Professional & scientific | 2014 |
| Rugby Resin Surfaces Ltd | Construction | 2025 |
| Rugby Restaurant Group Limited | Hospitality | 2019 |
| Rugby Retail Ltd | Wholesale & retail | 2023 |
| Rugby Roofing Limited | Extraterritorial | 2006 |
| Rugby School Enterprises Limited | Hospitality | 1988 |
| Rugby School Global Partnerships Limited | Education | 2023 |
| Rugby School International Foundation | Education | 2026 |
| Rugby School International Limited | Education | 2016 |
| Rugby School Projects Limited | Construction | 2017 |
| Rugby Self Storage Limited | Administrative & support | 2016 |
| Rugby Shiva Temple Limited | Real estate | 2025 |
| Rugby Shot Blasting Limited | Manufacturing | 2018 |
| Rugby Shuttle Services Ltd | Transport & logistics | 2014 |
| Rugby Site Services Ltd | Construction | 2014 |
| Rugby Sports and Education Group CIC | Education | 2023 |
| Rugby ST Andrews Rugby Football Club Limited | Arts & recreation | 2010 |
| Rugby Tamil Kings Ltd | Arts & recreation | 2024 |
| Rugby Tamil Welfare C.I.C. | Education | 2018 |
| Rugby Theatre | Arts & recreation | 2013 |
| Rugby Town Centre Company Limited | Professional & scientific | 2002 |
| Rugby Trades Ltd | Wholesale & retail | 2022 |
| Rugby Trading International Limited | Wholesale & retail | 2002 |
| Rugby Vapours and Mobiles Limited | Wholesale & retail | 2025 |
| Rugby Vehicle Sales Limited | Wholesale & retail | 2025 |
| Rugby VET Hospital Ltd | Professional & scientific | 2025 |
| Rugby Vets Ltd | Professional & scientific | 2025 |
| Rugby Vets Property Ltd | Real estate | 2025 |
| Rugby Vineyard Limited | Agriculture & fishing | 2022 |
| Rugby Web Design Limited | Information & communication | 2021 |
| Rugby Welding and Fabrications Ltd | Professional & scientific | 2021 |
| Rugby Wills Ltd | Professional & scientific | 2022 |
| Rugby Wine Estate Limited | Extraterritorial | 2024 |
| Rugby Wine Farm Limited | Extraterritorial | 2024 |
| Rugby's GOT Talent Community Interest Company | Arts & recreation | 2026 |
| Ruislip Hospitality Ltd | Hospitality | 2022 |
| Rural Mower Repairs Ltd | Manufacturing | 2025 |
| Rush Design Ltd | Information & communication | 2023 |
| Russell & Heath Limited | Administrative & support | 2024 |
| Russell Newbery Register Property Limited | Real estate | 2004 |
| Russu Ltd | Transport & logistics | 2018 |
| Rusty Nutz Limited | Manufacturing | 2017 |
| Ruth Ainger Design Ltd | Wholesale & retail | 2019 |
| RVS Professional Consultancy Ltd | Information & communication | 2019 |
| RVS Properties and Services Ltd | Real estate | 2025 |
| Ryan Solutions & Management Services Ltd | Information & communication | 2015 |
| Rymek Ltd | Transport & logistics | 2025 |
| Ryoko Ltd | Real estate | 2025 |
| RZR GMZ Ltd | Information & communication | 2019 |
| S & J Commercials Limited | Wholesale & retail | 2004 |
| S & KJ Lynch Consulting Ltd. | Real estate | 2015 |
| S & L Concrete Repairs & Chemical Grouting Limited | Administrative & support | 2010 |
| S & M CA Ltd | Wholesale & retail | 2025 |
| S and G Foods Rugby Ltd | Hospitality | 2021 |
| S D Daniels Haulage Limited | Transport & logistics | 2005 |
| S Design Works Ltd | Wholesale & retail | 2025 |
| S Harrington Ltd. | Professional & scientific | 2017 |
| S J Darker Contracting Limited | Construction | 2016 |
| S J L Air Conditioning Ltd. | Construction | 2007 |
| S J W Power Ltd | Construction | 2014 |
| S K M Medical (Services) Ltd | Health & social care | 2013 |
| S Marlow Trading Ltd | Agriculture & fishing | 2021 |
| S Panici Trans Ltd | Transport & logistics | 2017 |
| S V Property Rental Ltd | Real estate | 2025 |
| S&B Bowers Ltd | Hospitality | 2019 |
| S&B Felsham Ltd | Hospitality | 2021 |
| S&D Fabrications (Mids) Ltd | Manufacturing | 2024 |
| S&L Dermedica Ltd | Health & social care | 2020 |
| S&R Elevations Ltd | Construction | 2024 |
| S&S Spedition Ltd | Transport & logistics | 2019 |
| S. Walsh Transport Limited | Transport & logistics | 2014 |
| S.A.D Brothers Limited | Real estate | 2005 |
| S.K.T. Investments 19 Limited | Wholesale & retail | 2025 |
| S.K.T. Services Limited | Wholesale & retail | 1998 |
| S.O.A. Rugby Limited | Real estate | 2013 |
| S.O.B ( Standing on Business) Ltd | Information & communication | 2024 |
| SA Luis Limited | Professional & scientific | 2015 |
| Sa&P Limited | Real estate | 2017 |
| SAA Accounting Ltd | Professional & scientific | 2022 |
| Saanvi Shree Properties Ltd | Real estate | 2020 |
| Saas Real Estates Ltd | Real estate | 2021 |
| Saawo Properties Ltd | Real estate | 2023 |
| Sabec & Co Accountants Limited | Professional & scientific | 2014 |
| Sacomi Limited | Health & social care | 2013 |
| Saddle PUB Ltd | Hospitality | 2023 |
| Saew Limited | Real estate | 2026 |
| Safe DIG Surveys Limited | Construction | 2021 |
| Safe FLY Ltd | Administrative & support | 2017 |
| Safe Hands Contract Services Limited | Administrative & support | 2009 |
| Safe Haven Talent Limited | Administrative & support | 2025 |
| Safe Journey Rugby Ltd | Transport & logistics | 2023 |
| Safedrive Transport Ltd | Transport & logistics | 2015 |
| Safetyprosper Ltd | Construction | 2018 |