| RSK Contracting (UK) Limited | Construction | 2015 |
| RSK Trading Limited | Wholesale & retail | 2005 |
| RSL Electrical Limited | Construction | 2007 |
| Rslh Properties Ltd | Real estate | 2025 |
| RSM Clothing Ltd | Wholesale & retail | 2017 |
| RSM Coaching & Consultancy Ltd | Education | 2021 |
| RSM Couriers Limited | Transport & logistics | 2011 |
| RSR Digital Ltd | Information & communication | 2023 |
| RTJ Life Sciences Ltd | Wholesale & retail | 2026 |
| RTK Construction Ltd | Construction | 2019 |
| RTM Pharm Ltd | Wholesale & retail | 2024 |
| RTS Autocentres (Wolverhampton) Limited | Wholesale & retail | 2011 |
| Rtsr Healthcare Ltd | Health & social care | 2013 |
| Rubarbhello Ltd | Professional & scientific | 2021 |
| Rubi Kumari Aesthetics Ltd | Health & social care | 2026 |
| Rubix Hair Salon Limited | Other services | 2017 |
| Ruboy Properties Limited | Real estate | 2021 |
| Ruby and Co Holdings Ltd | Real estate | 2025 |
| Rudge & Co (UK) Limited | Manufacturing | 2003 |
| Rudge Cellars Ltd | Wholesale & retail | 2022 |
| Rudge Heath General Stores Ltd | Wholesale & retail | 2018 |
| Rudge Property Maintenance UK Ltd | Construction | 2016 |
| Rudge Wood Horticulture CIC | Professional & scientific | 2020 |
| Rudwoong Ltd | Transport & logistics | 2019 |
| Ruehannah Ltd | Health & social care | 2024 |
| Ruenash Ltd | Administrative & support | 2021 |
| Rugby Borough FC Women Ltd | Arts & recreation | 2018 |
| Rugged Forge Ltd | Wholesale & retail | 2026 |
| Rumbles Fish & Chips Limited | Hospitality | 2025 |
| Rumbles Foods Ltd | Hospitality | 2024 |
| Running COW Ltd | Financial services | 2016 |
| Ruoe Limited | Education | 2022 |
| RUP Holdings Ltd | Administrative & support | 2024 |
| Rupee Estates Limited | Real estate | 2020 |
| Rushbury Holdings Limited | Financial services | 2011 |
| Rusheel Kainth Ltd | Construction | 2025 |
| Rushton's Game Ltd | Agriculture & fishing | 2016 |
| Rushx Logistics Ltd | Transport & logistics | 2026 |
| Russell Perry Limited | Information & communication | 2007 |
| Russell Pike Media Limited | Professional & scientific | 1992 |
| Rustyz Holding Ltd | Financial services | 2023 |
| Rustyz Wton Ltd | Hospitality | 2024 |
| Ruta M Homes Ltd | Real estate | 2019 |
| Ruta Property Limited | Real estate | 2026 |
| Ruth Healthcare Ltd | Public administration | 2022 |
| Ruth James Properties & Developments (Knightsbridge) Ltd | Construction | 2025 |
| Ruthan Limited | Construction | 2000 |
| Ruthless Vapor UK Ltd | Wholesale & retail | 2024 |
| RVD Cleaning and Gardening Services Ltd | Administrative & support | 2022 |
| Rxcloud Ltd | Wholesale & retail | 2020 |
| Rxhub Ltd | Wholesale & retail | 2020 |
| RY Creative Solutions Ltd | Other services | 2024 |
| Ryan Johnson Repairs Ltd | Wholesale & retail | 2023 |
| Ryecroft Properties Limited | Real estate | 1999 |
| Ryecron Limited | Administrative & support | 1999 |
| Ryet Properties Limited | Real estate | 2023 |
| Ryka Property Group Ltd | Real estate | 2026 |
| RYM Solutions Ltd | Transport & logistics | 2022 |
| RYN Group Ltd | Wholesale & retail | 2025 |
| Ryrivpum Ltd | Health & social care | 2021 |
| Ryssa Healthcare Ltd | Health & social care | 2024 |
| RZ Immigration Practice Ltd | Professional & scientific | 2023 |
| S & a Properties (West Mids) Ltd | Real estate | 2020 |
| S & a Retailers Ltd | Wholesale & retail | 2023 |
| S & B Industrial Investments Limited | Professional & scientific | 2003 |
| S & B Waste Management & Recycling Limited | Water & waste | 1993 |
| S & C Drives & Paving Ltd | Construction | 2015 |
| S & D Property Lettings Ltd | Real estate | 2020 |
| S & D Screeds Limited | Construction | 2005 |
| S & J European Transport Ltd | Transport & logistics | 2024 |
| S & J Watson Limited | Water & waste | 2024 |
| S & L Business Services Ltd | Professional & scientific | 2005 |
| S & M Builders (Midlands) Limited | Construction | 2004 |
| S & R Chadawong Ltd | Wholesale & retail | 2016 |
| S & R Properties (UK) Limited | Real estate | 2006 |
| S & T Builders Ltd | Construction | 2026 |
| S 3 Properties Ltd | Real estate | 2007 |
| S a & D E Dixon Limited | Agriculture & fishing | 2003 |
| S a Academy Cheer & Dance Ltd | Arts & recreation | 2023 |
| S a Academy Ltd | Education | 2015 |
| S a International Ltd | Wholesale & retail | 2019 |
| S and B Partnership Ltd | Real estate | 2018 |
| S Associates Ltd | Professional & scientific | 2024 |
| S B Fulfillment Ltd | Transport & logistics | 2023 |
| S B J Z Ltd | Transport & logistics | 2020 |
| S B Resourcing Limited | Health & social care | 2025 |
| S Bahra Builders Ltd | Construction | 2016 |
| S C Aspirations Ltd | Professional & scientific | 2024 |
| S C Assets Limited | Construction | 2021 |
| S Chahal Construction UK Limited | Construction | 2012 |
| S Chahal Group Limited | Financial services | 2026 |
| S Chahal Properties Limited | Real estate | 2020 |
| S Chahal Transport Ltd | Transport & logistics | 2020 |
| S D M Rendering and Plastering Specialists Limited | Construction | 2011 |
| S G Motor Services Ltd | Wholesale & retail | 2019 |
| S G S Mechanical Limited | Construction | 2007 |
| S Girvan Ltd | Construction | 2024 |
| S Hendley Trading Limited | Wholesale & retail | 2025 |
| S Hodgson Limited | Professional & scientific | 2015 |
| S J Building Solutions Ltd. | Construction | 2012 |