| Smart Inventories Limited | Administrative & support | 2008 |
| Smithbrook Limited | Professional & scientific | 2009 |
| Smithsquared (Consulting) Ltd | Professional & scientific | 2010 |
| Smooth Red Ltd | Hospitality | 2004 |
| Smrt Move Ltd | Manufacturing | 2024 |
| Snap-B Music Limited | Information & communication | 2013 |
| Snapdragon Bespoke Gardens Limited | Administrative & support | 2021 |
| Snoopy FC Ltd | Information & communication | 2019 |
| Solespring Ltd | Wholesale & retail | 2026 |
| Solomon Brothers Limited | Administrative & support | 2018 |
| Solutions IQ Ltd | Professional & scientific | 2019 |
| Something Smart Limited | Real estate | 2019 |
| Soneji Property Limited | Real estate | 2016 |
| Speclean Limited | Administrative & support | 2010 |
| Speerwick Freehold Limited | Households | 2019 |
| Splash Decor Ltd | Construction | 2022 |
| Sport Parkinson's CIC | Education | 2019 |
| Springfield Developments Limited | Professional & scientific | 1983 |
| SPW Design Solutions Limited | Professional & scientific | 2021 |
| ST Andrews Close Residents Association Ltd | Other services | 2010 |
| ST George Entertainment Ltd | Arts & recreation | 2013 |
| ST James Developments (Surbiton) Ltd | Construction | 2023 |
| ST James ROW Limited | Construction | 2018 |
| ST Margaret's (Kingston Hill) Residents Association 1995 Limited | Other services | 1995 |
| Stanford Consultancy Limited | Professional & scientific | 2022 |
| Stanprint Investments Limited | Real estate | 1996 |
| Starscream Communications Limited | Professional & scientific | 2013 |
| Stavanger Ltd | Financial services | 2024 |
| Steelhouse Strategy Ltd | Administrative & support | 2016 |
| Stewley Somerset Limited | Agriculture & fishing | 2021 |
| Storme Makeup and Hair Ltd | Other services | 2021 |
| Strand Property Holdings Ltd | Real estate | 2024 |
| Strategic Investment Advisors Limited | Financial services | 2025 |
| Strategic Investment Advisory LLP | | 2025 |
| Streamline Solutions Consulting Ltd | Professional & scientific | 2025 |
| Stuart Boother Limited | Arts & recreation | 2024 |
| Stucke Holdings Limited | Real estate | 2018 |
| Stucke Properties Limited | Real estate | 2018 |
| Styles Landscaping Limited | Administrative & support | 2025 |
| Summer Road Events Limited | Administrative & support | 2017 |
| Superplates Limited | Wholesale & retail | 2024 |
| Support Property Limited | Real estate | 2018 |
| Surbiton Cycles (Marina) Limited | Wholesale & retail | 2013 |
| Surveys for Asbestos Limited | Construction | 2024 |
| Symby Limited | Information & communication | 2020 |
| Symvoce Limited | Information & communication | 2026 |
| Synchrony Rehabilitation Ltd | Other services | 2025 |
| T Warriors Brewery UK Limited | Wholesale & retail | 2017 |
| T1COMPANY Limited | Financial services | 2025 |
| T2COMPANY Limited | Financial services | 2025 |
| Tachbrook Global Asset Strategies (ARM) Limited | Professional & scientific | 2023 |
| Tachbrook Holdings Ltd | Professional & scientific | 2022 |
| Talent Smart Limited | Administrative & support | 2018 |
| Tarian Investment Co. Limited | Real estate | 1953 |
| Tasty Heaven Limited | Hospitality | 2025 |
| Taya Digital Media Ltd | Information & communication | 2026 |
| TD Immigration Ltd | Professional & scientific | 2025 |
| TDB Developments Limited | Construction | 2012 |
| Techonbrand Limited | Professional & scientific | 2025 |
| TEE Technical Limited | Professional & scientific | 2021 |
| Tegatz Limited | Education | 2023 |
| Tell Creative Limited | Other services | 2021 |
| Terra Datum Limited | Administrative & support | 2026 |
| Terrene Tech Limited | Information & communication | 2025 |
| TGC UK Limited | Administrative & support | 2003 |
| Thames Design & Build Ltd. | Construction | 2011 |
| Thames Ditton Brewers Ltd | Wholesale & retail | 2021 |
| Thames Ditton Computers Limited | Information & communication | 2003 |
| Thames Ditton Foundation | Other services | 2012 |
| Thames Ditton GIN Ltd | Manufacturing | 2020 |
| Thames Ditton Island(Maintenance & Services)Limited | Real estate | 1967 |
| Thames Ditton Lawn Tennis Club Ltd | Arts & recreation | 2000 |
| Thames Local Food & Wine Limited | Wholesale & retail | 2025 |
| Thames Side(Ditton)Residents Association Limited | Households | 1966 |
| Thames Tech Services Limited | Information & communication | 2026 |
| THE Art of Connection Limited | Administrative & support | 2008 |
| THE Brighton Requirement Limited | Wholesale & retail | 2018 |
| THE Brothers Trim Limited | Hospitality | 2008 |
| THE Client Advocates Limited | Professional & scientific | 2013 |
| THE Code Design Studio Limited | Construction | 2023 |
| THE CRO Way Ltd | Professional & scientific | 2023 |
| THE Defise Foundation | Wholesale & retail | 2024 |
| THE Dental Company London Ltd | Health & social care | 2011 |
| THE Drive Supercar Events Limited | Administrative & support | 2025 |
| THE Ergon House Partnership Ltd | Professional & scientific | 2023 |
| THE European Press Golf Association (UK) Limited | Arts & recreation | 2008 |
| THE French Kitchen Gourmet Food Company Limited | Wholesale & retail | 2015 |
| THE Gambling Business Group Ltd | Administrative & support | 2021 |
| THE Garden Inn Stockbridge Limited | Wholesale & retail | 2023 |
| THE Genesis Drinks Company Limited | Wholesale & retail | 2020 |
| THE Glass Slipper Coaching Ltd | Health & social care | 2025 |
| THE Good Wine Shop Limited | Wholesale & retail | 2000 |
| THE Green Outdoors Limited | Administrative & support | 2025 |
| THE Hamilton Gold Company Ltd | Wholesale & retail | 2024 |
| THE Hamilton Gold Company Wiltshire Ltd | Wholesale & retail | 2025 |
| THE Hive Insight & Idea Generation Limited | Professional & scientific | 2021 |
| THE Irvin Organisation Limited | Administrative & support | 2003 |
| THE Keep London Ltd | Wholesale & retail | 2026 |
| THE Limping FOX Limited | Hospitality | 2024 |
| THE Making Room Productions Limited | Information & communication | 2013 |