| Suiteworks Ltd | Information & communication | 2025 |
| Sultanov Limited | Real estate | 2019 |
| Summer & Beyond Ltd | Wholesale & retail | 2024 |
| Summer Roses Florist Ltd | Wholesale & retail | 2024 |
| Sun Star Food and Wine Ltd | Wholesale & retail | 2024 |
| Sunshined Ltd | Health & social care | 2024 |
| Superieo Ltd | Wholesale & retail | 2020 |
| Superskillz Limited | Administrative & support | 2023 |
| Supreme Hair 1 Limited | Other services | 2023 |
| Supreme Healthcare Services Ltd | Health & social care | 2015 |
| Supreme Home Services Ltd | Administrative & support | 2018 |
| Sure Electrical Fit Ltd | Manufacturing | 2022 |
| Surepin (Southern) Limited | Construction | 1994 |
| Sureyan Express Limited | Wholesale & retail | 2018 |
| Sureyan Pooja Ltd | Wholesale & retail | 2020 |
| Surrey London Builds Ltd | Construction | 2025 |
| Surrey Move Management Ltd | Transport & logistics | 2018 |
| Surrey Plastering Services Ltd | Construction | 2011 |
| Surrey Roofing Limited | Construction | 2021 |
| Surrey Security Ltd | Construction | 2016 |
| Surya Constructions Ltd | Construction | 2023 |
| Sushi Group Ltd | Hospitality | 2021 |
| Suslight UK Ltd | Wholesale & retail | 2022 |
| Sutton and District Training Limited | Education | 1999 |
| Sutton Community Champions Ltd | Other services | 2022 |
| Sutton Community Dance CIC | Education | 2019 |
| Sutton Community Works | Hospitality | 2010 |
| Sutton Motors and Garage Limited | Wholesale & retail | 2025 |
| Sutton Motors Ltd | Wholesale & retail | 2025 |
| Sutton Schools Christian Workers Trust | Education | 1995 |
| Suvink Ltd | Wholesale & retail | 2023 |
| Suzata Ltd | Other services | 2018 |
| SVB Properties Ltd | Real estate | 2020 |
| Svelte Construction Ltd | Extraterritorial | 2024 |
| SVK Cloud Solutions Limited | Information & communication | 2015 |
| Svvp Agam Ltd | Wholesale & retail | 2023 |
| Swissserene Limited | Administrative & support | 2015 |
| Synergation Limited | Professional & scientific | 2015 |
| T Power Homes (Holdings) Ltd | Extraterritorial | 2020 |
| T S Accountancy Limited | Professional & scientific | 2008 |
| T&K Accountancy LLP | | 2007 |
| T.H.E Developments Limited | Construction | 2025 |
| T.H.I.N.K. Enterprise Ltd | Wholesale & retail | 2020 |
| T.M.D. Homes Ltd | Real estate | 2026 |
| TAI Ding Property Limited | Real estate | 2024 |
| Taikai.Uk. Ltd | Education | 2025 |
| Take VAT Services Ltd | Professional & scientific | 2021 |
| Tandridge Court Residents' Association Limited | Other services | 1983 |
| Tanjosh Limited | Information & communication | 2014 |
| Tano Medica Ltd | Health & social care | 2025 |
| Taraomag Ltd | Information & communication | 2023 |
| Target Facilities Management Limited | Administrative & support | 2016 |
| Taromag Limited | Wholesale & retail | 2023 |
| Taste of Palestine Ltd | Hospitality | 2024 |
| Tastexpress Ltd | Hospitality | 2026 |
| Taxidea Ltd | Wholesale & retail | 2026 |
| Taylor Dutton Consultancy Limited | Other services | 2010 |
| TB Quality Painting & Decorating Services Ltd | Construction | 2019 |
| Tcheadley Ltd | Administrative & support | 2023 |
| Tcma Property Ltd | Real estate | 2025 |
| TDM IT Services Limited | Information & communication | 2016 |
| TDX London Limited | Transport & logistics | 2021 |
| Technified Systems Limited | Information & communication | 2018 |
| Teddy Beauty Ltd | Wholesale & retail | 2019 |
| Tehmin Limited | Wholesale & retail | 2026 |
| Temjay Ventures Ltd | Real estate | 2025 |
| Tengis Media Limited | Information & communication | 2016 |
| Tenscale Limited | Wholesale & retail | 2026 |
| Tetaabuilders Ltd | Construction | 2023 |
| Tetley’S Tenancies Ltd | Real estate | 2021 |
| Teyana Ltd | Other services | 2013 |
| TGL Iestates Limited | Construction | 2016 |
| TH Waldens Limited | Construction | 2012 |
| Thab Limited | Real estate | 2024 |
| Thames HGS Limited | Financial services | 2022 |
| Thateresa Ltd | Other services | 2025 |
| Thayan Ltd | Real estate | 2019 |
| THE African Foundation | Administrative & support | 1997 |
| THE Bambino Lounge Ltd | Extraterritorial | 2025 |
| THE Beauty Oasis Ltd | Other services | 2023 |
| THE Bertie Bunch Limited | Professional & scientific | 2024 |
| THE Bespoke Touch Ltd | Construction | 2022 |
| THE Bluberts Trade Links London Ltd | Hospitality | 2022 |
| THE Boxes Shop Ltd | Wholesale & retail | 2021 |
| THE Centre for Environmental Initiatives | Other services | 2001 |
| THE Ceramic Garden Ltd | Education | 2022 |
| THE Cornershop G S Ltd | Wholesale & retail | 2020 |
| THE Creative Art Painting Company Ltd | Construction | 2013 |
| THE Crew Refrigeration Services Ltd | Manufacturing | 2025 |
| THE Cyber Station Ltd | Information & communication | 2019 |
| THE Davidian Seventh-Day Adventist Association | Other services | 2022 |
| THE Evergreen Loft Company Ltd | Construction | 2010 |
| THE F Plan Limited | Arts & recreation | 2026 |
| THE Firs Management Company (Carshalton Beeches) Limited | Households | 1994 |
| THE Football Trust Ltd | Arts & recreation | 2013 |
| THE Friends of ST Helier Limited | Wholesale & retail | 1999 |
| THE Good Haus Ltd | Wholesale & retail | 2020 |
| THE H.S. Group Limited | Administrative & support | 2000 |
| THE Home Makeover Shop Limited | Construction | 2025 |
| THE Howling Limited | Wholesale & retail | 2025 |