| Succour Care Limited | Administrative & support | 2023 |
| Sudhan Associates Ltd | Information & communication | 2022 |
| Suede Hosting Ltd | Information & communication | 2021 |
| Sugaroholic Ltd | Manufacturing | 2025 |
| Sugar’S Property Ltd | Real estate | 2022 |
| Sughran Enterprises Ltd | Real estate | 2019 |
| Sujowal Limited | Transport & logistics | 2025 |
| Sukhjit Singh Construction Ltd | Construction | 2017 |
| Sukhman Constructions Ltd | Construction | 2023 |
| Sukhmani Construction Services Ltd | Construction | 2019 |
| Sulaiman Optics Ltd | Health & social care | 2025 |
| Suli Foods Limited | Hospitality | 2026 |
| Sultan Group Holdings Ltd | Financial services | 2024 |
| Sultan Haulage Ltd | Transport & logistics | 2018 |
| Suman Construction Limited | Construction | 2019 |
| Summer Hill Recruitment Limited | Administrative & support | 2023 |
| Sumtide Ltd | Health & social care | 2020 |
| Sun Dairy Ltd | Wholesale & retail | 2023 |
| Sun Properties Investment Limited | Real estate | 2023 |
| SUN-1 Global Ltd | Professional & scientific | 2012 |
| Suncity Homes Ltd | Real estate | 2019 |
| Sunheath Properties Limited | Professional & scientific | 2001 |
| Sunhot Ltd | Wholesale & retail | 2024 |
| Sunita Rani Properties Limited | Real estate | 2025 |
| Sunna Beauty Limited | Wholesale & retail | 2022 |
| Sunnamusk Limited | Real estate | 2018 |
| Sunny Graphic Machinery Ltd | Transport & logistics | 2021 |
| Sunpreet Drylining Ltd | Construction | 2019 |
| Sunrise BUZ Ltd | Transport & logistics | 2016 |
| Sunrise Pleasant Ltd | Administrative & support | 2020 |
| Sunrise-Spectrum Peace Home Ltd | Health & social care | 2025 |
| Sunsett Ltd | Administrative & support | 2025 |
| Sunshoos Limited | Education | 2020 |
| Suntrust Solar Ltd | Construction | 2023 |
| Super Botanic Ltd | Extraterritorial | 2020 |
| Super Facilities Management Ltd | Administrative & support | 2019 |
| Super Hygienic Cleaning Limited | Administrative & support | 2023 |
| Super Wines (Dagenham) Ltd | Wholesale & retail | 2015 |
| SUPER30 Limited | Health & social care | 2019 |
| Superb Decor Ltd | Construction | 2019 |
| Superfast Roofing (UK) Ltd | Construction | 2021 |
| Superoptical Ltd | Health & social care | 2013 |
| Supplementals Ltd | Wholesale & retail | 2024 |
| Supply Labour on Site Ltd | Construction | 2011 |
| Supported Care & Accommodation Ltd | Health & social care | 2018 |
| Supraja People for People Ltd | Health & social care | 2011 |
| Supreme Communication Ltd | Construction | 2022 |
| Supreme Firestopping Ltd | Construction | 2024 |
| Supreme Service 4U UK Ltd | Administrative & support | 2023 |
| Supremus Therapeutics 1 Limited | Professional & scientific | 2026 |
| Supremus Therapeutics Ltd | Health & social care | 2023 |
| Sure Deal Limited | Hospitality | 2017 |
| Sure Excellence Limited | Administrative & support | 2019 |
| Sure Transport Ltd | Transport & logistics | 2016 |
| Surveillance Tech Ltd | Information & communication | 2022 |
| SUSAN79 Care Limited | Health & social care | 2013 |
| Susment Logistics Ltd | Wholesale & retail | 2023 |
| Sustainable Certification and Training Ltd | Professional & scientific | 2021 |
| Sutter's Windows & Doors Limited | Manufacturing | 2025 |
| Suuhmakeup Ltd | Other services | 2025 |
| SV Loft Conversion Ltd | Construction | 2023 |
| SV Scratch FIX Limited | Construction | 2015 |
| SVA Durasteel Limited | Construction | 2022 |
| Svasini Investments Ltd | Real estate | 2023 |
| Svegi Limited | Construction | 2018 |
| SVP Consults Limited | Administrative & support | 2025 |
| SVR Property Investments Ltd | Real estate | 2020 |
| SVS Enterprise Limited | Real estate | 2025 |
| SW Pharmaceutical UK Ltd | Wholesale & retail | 2024 |
| Swallow Electrical Ltd | Construction | 2021 |
| Swallow Housing Limited | Real estate | 2024 |
| Swati SV Limited | Information & communication | 2015 |
| Sweet Nuts 2010 Ltd | Hospitality | 2024 |
| Sweet Stop Cuisine Ltd | Hospitality | 2024 |
| Sweetdeals Ltd | Wholesale & retail | 2025 |
| Sweets Town WG Ltd | Manufacturing | 2026 |
| Sweettoyin Limited | Health & social care | 2015 |
| Swift Bargain Limited | Wholesale & retail | 2019 |
| Swift Range Ltd | Wholesale & retail | 2024 |
| Swift Shift Logistics Ltd | Transport & logistics | 2019 |
| Swift-Vent Ltd | Construction | 2025 |
| Swiftbuild Solutions Ltd | Construction | 2024 |
| Swiftbuyuk Ltd | Wholesale & retail | 2025 |
| Swiva Limited | Information & communication | 2023 |
| Syba Constructions Limited | Construction | 2026 |
| Sycamore Trust U.K. | Other services | 2006 |
| Syed AUN Limited | Wholesale & retail | 2026 |
| Syed Global Enterprises Ltd | Education | 2025 |
| Syed Global Tech Limited | Wholesale & retail | 2026 |
| Syed Properties 1 Limited | Real estate | 2025 |
| Syed Properties 2 Limited | Real estate | 2025 |
| Syed Properties and Developers Limited | Real estate | 2024 |
| Syed Properties Ltd | Real estate | 2016 |
| Syinta Ltd. | Wholesale & retail | 2025 |
| SYK 12 Limited | Administrative & support | 2012 |
| Sylcom Accountants Ltd | Professional & scientific | 2018 |
| Sylhet to Whitechapel Tea House Limited | Wholesale & retail | 2025 |
| Sylmer Limited | Real estate | 2024 |
| Sym's Hair and Beauty Bar Ltd | Other services | 2025 |
| Symonic Alternative Energy Research UK Limited | Construction | 2023 |