| Ruby Court Management Company Limited | Real estate | 2015 |
| Ruby Decor Ltd | Other services | 2017 |
| Ruby Design Ltd | Construction | 2024 |
| Rubybloom Designs Limited | Professional & scientific | 2014 |
| Rubys Building Construction Ltd | Construction | 2018 |
| RUH (KBH) Limited | Health & social care | 2024 |
| RUH Dental (Fleet Street) Limited | Health & social care | 2015 |
| RUH Dental (KBH) Limited | Health & social care | 2024 |
| RUH Dental (Manchester) Limited | Health & social care | 2018 |
| RUH Dental (Notting Hill Gate) Limited | Health & social care | 2016 |
| RUH Dental Training Academy Limited | Health & social care | 2019 |
| RUH Lifestyle Limited | Wholesale & retail | 2021 |
| Ruislip Biotech Limited | Professional & scientific | 2012 |
| Ruislip Boiler Experts Limited | Construction | 2024 |
| Ruislip Physio Ltd | Real estate | 2018 |
| Ruma Construction Ltd | Administrative & support | 2022 |
| Runjhun Property Group Ltd | Real estate | 2024 |
| Runn Healthcare Limited | Professional & scientific | 2012 |
| Rupani Properties Ltd | Real estate | 2018 |
| Rusk Real Estate Limited | Real estate | 2023 |
| Russell Technology & Strategy Consulting Ltd | Information & communication | 2025 |
| Russet and Ridge Limited | Real estate | 2026 |
| Russet Close Management Company Limited | Households | 1989 |
| Rutc Trading Services Limited | Administrative & support | 2005 |
| RWR Plus Limited | Manufacturing | 2019 |
| RWS Investments Ltd | Real estate | 2024 |
| Ryans Carpentry Limited | Construction | 2022 |
| Ryans Construction Limited | Construction | 2024 |
| Ryans Electrical Limited | Construction | 2025 |
| Ryefield Investments Limited | Wholesale & retail | 2017 |
| Ryefield Living Company Limited | Real estate | 2025 |
| Ryefield Property Management Limited | Real estate | 2018 |
| S & L Bridal Limited | Wholesale & retail | 2017 |
| S & S Rigging Services Ltd | Information & communication | 2020 |
| S and F Ventures Limited | Wholesale & retail | 2025 |
| S and M Lodge Close Ltd | Real estate | 2025 |
| S B Thind Investments Ltd | Real estate | 2022 |
| S Chaudary & Co Ltd | Professional & scientific | 1999 |
| S G Carpets and Flooring Limited | Construction | 2024 |
| S Gill Couriers Limited | Transport & logistics | 2019 |
| S Green Limited | Information & communication | 2018 |
| S K Fishries Ltd | Hospitality | 2019 |
| S Komor Technology Ltd | Manufacturing | 2021 |
| S N S Management Services Limited | Professional & scientific | 1997 |
| S P Properties Development Ltd | Real estate | 2021 |
| S Qureshi Group Holding Ltd | Professional & scientific | 2018 |
| S S Infra Developers Ltd | Construction | 2025 |
| S Specialist Cars Ltd | Wholesale & retail | 2025 |
| S U R J Limited | Other services | 2016 |
| S Wood Electrics Ltd | Professional & scientific | 2012 |
| S&B Brothers Ltd | Transport & logistics | 2025 |
| S&B Logistics Limited | Water & waste | 2025 |
| S&G Farm Holdings Ltd | Agriculture & fishing | 2025 |
| S&J UK Investments Ltd | Real estate | 2020 |
| S&K Fried Chicken Ltd | Hospitality | 2023 |
| S&K Mining Ltd | Manufacturing | 2023 |
| S&R Auto Tech Mobile Ltd | Wholesale & retail | 2022 |
| S&S Edition Limited | Wholesale & retail | 2023 |
| S&S Roofing and Builders Ltd Ltd | Construction | 2019 |
| S&V Carpentery Ltd | Construction | 2018 |
| S&V Property Estates Ltd | Real estate | 2019 |
| S. & S. Property Management Limited | Professional & scientific | 1980 |
| S.A Surveying Services Ltd | Construction | 2020 |
| S.G.Gardening / Landscaping Ltd | Administrative & support | 2025 |
| S.I.C.C Limited | Hospitality | 2022 |
| S.L.M. Limited | Real estate | 1985 |
| S1003 Limited | Hospitality | 2018 |
| S4S Services Limited | Wholesale & retail | 2025 |
| Saanjh Events Limited | Hospitality | 2024 |
| Saanjh Foods Limited | Hospitality | 2023 |
| Saas Accelerator Ltd | Professional & scientific | 2025 |
| Sababa Properties Ltd | Real estate | 2026 |
| Sabir Services Ltd | Financial services | 2014 |
| Saccs Care Limited | Health & social care | 2002 |
| Saccs Limited | Health & social care | 2002 |
| Sachdeva Lettings Limited | Real estate | 2020 |
| Sada Systems UK Limited | Information & communication | 2022 |
| SAE Accountancy Services Limited | Professional & scientific | 2017 |
| Safe Acoustics Ltd | Construction | 2020 |
| Safe Dwellings Ltd | Health & social care | 2021 |
| Safe Home Builders Ltd | Construction | 2017 |
| Safe in Style Glazing Limited | Construction | 2014 |
| Safe N Sound (Uxbridge) Limited | Wholesale & retail | 2005 |
| Safe Ortho Education Limited | Extraterritorial | 2020 |
| Safe Ortho Limited | Education | 2015 |
| Safe Ortho Training Limited | Education | 2024 |
| Safe Park Spaces 1 Ltd | Real estate | 2025 |
| Safe Property Holdings Limited | Real estate | 2020 |
| SAFE4U Partners Limited | Other services | 2015 |
| Safebound Fencing Specialists Ltd | Construction | 2025 |
| Safesite (UK) Limited | Extraterritorial | 2011 |
| Safetech Systems Limited | Professional & scientific | 1999 |
| Saffron Property Investment Limited | Real estate | 2020 |
| Safi Cosmetics Ltd | Wholesale & retail | 2025 |
| Saga Network Limited | Information & communication | 2018 |
| Sagarika UK Limited | Information & communication | 2023 |
| Saggu Brothers Signature Roofing Ltd | Construction | 2026 |
| Sagoo Homes Ltd | Real estate | 2024 |
| Saharan Wholsale Trading Limited | Wholesale & retail | 2026 |
| Sahu Investments Limited | Real estate | 2023 |