| SW London Landscaping Ltd | Administrative & support | 2026 |
| SW6 Homes Limited | Construction | 2023 |
| Sweeper Studios Limited | Information & communication | 2017 |
| Swiss Motors Ltd | Wholesale & retail | 2018 |
| Sync Dental Addlestone Limited | Health & social care | 2017 |
| Sync Dental Chertsey Limited | Health & social care | 2012 |
| Sync Dental Group Limited | Financial services | 2020 |
| Sync Dental Guildford Group Limited | Financial services | 2023 |
| Sync Dental Guildford Limited | Health & social care | 2013 |
| Sync Dental Parkside Limited | Health & social care | 2020 |
| Sync Dental Pyrford Limited | Health & social care | 2020 |
| Sync Dental Roseneath Limited | Health & social care | 2022 |
| Sync Dental Waterside Limited | Health & social care | 2020 |
| Sync Dental Wimbledon Limited | Health & social care | 2024 |
| Sync Dental Windsor Limited | Health & social care | 2010 |
| Synergraphics Limited | Other services | 1991 |
| Synima Limited | Information & communication | 2023 |
| Systematic Finishing Limited | Extraterritorial | 1991 |
| Systemic Thought Ltd | Information & communication | 2020 |
| SZ Innovations Ltd | Wholesale & retail | 2023 |
| T S Property Estates Limited | Construction | 2021 |
| T Square Productions Limited | Professional & scientific | 2019 |
| T W a Consultancy Limited | Professional & scientific | 2020 |
| T&D Distribution Ltd | Wholesale & retail | 2023 |
| T&D Property Investment Limited | Real estate | 2023 |
| T.W.T.C. Limited | Wholesale & retail | 1999 |
| TA Sports Ltd | Education | 2020 |
| Takeaway Teacher Limited | Education | 2021 |
| Talentridge Limited | Administrative & support | 2026 |
| Tamarix Homes Ltd | Real estate | 2020 |
| Tanelorn Consulting Limited | Professional & scientific | 2025 |
| Target Golf Academy Limited | Arts & recreation | 2016 |
| Target Tree Surgery Ltd | Administrative & support | 2023 |
| Tarrant & Robertson (Petersfield) Limited | Real estate | 2011 |
| TBB Capital Limited | Other services | 2023 |
| TC Oriental (UK) Limited | Real estate | 2018 |
| Tcns Limited | Professional & scientific | 1994 |
| TCS Training Ltd | Education | 2020 |
| Teabubbles Ltd | Wholesale & retail | 2025 |
| Teaching Writing Online Limited | Education | 2015 |
| Team Frames Walton-On-Thames Ltd | Construction | 2011 |
| TEC RES 2000 Limited | Administrative & support | 2010 |
| Techglass Advisory Services Limited | Administrative & support | 2021 |
| Technical Resources Limited | Administrative & support | 2000 |
| Techspec Ltd | Professional & scientific | 2022 |
| Tecsider Limited | Manufacturing | 1987 |
| Teddies on a Rainbow Limited | Health & social care | 2013 |
| Tekin Trading Services Ltd | Manufacturing | 2021 |
| Telecom Security Ltd | Administrative & support | 2010 |
| Tempo TEK Ltd | Information & communication | 2024 |
| Teres Latro Events Limited | Hospitality | 2025 |
| Terravanta Limited | Professional & scientific | 2026 |
| Thai Eatery Ltd | Hospitality | 2024 |
| Thames Brokerage Limited | Wholesale & retail | 2009 |
| Thames Survey Limited | Professional & scientific | 2002 |
| Thameside Mortgage & Protection Limited | Financial services | 2003 |
| Thdg (Consulting Engineers) Ltd | Professional & scientific | 2013 |
| Thdg Developments Ltd | Real estate | 2026 |
| THE After School Kids Club Limited | Education | 2003 |
| THE Bannister Corporation Limited | Financial services | 2022 |
| THE Birth Republic CIC | Professional & scientific | 2023 |
| THE Bone Gym Limited | Health & social care | 2026 |
| THE Brambles (Ottershaw) NO. 3 Residents Company Limited | Administrative & support | 1986 |
| THE Chippy Addlestone Limited | Hospitality | 2022 |
| THE Compasses (Freehold) Limited | Real estate | 2021 |
| THE Doxa Way Ltd | Information & communication | 2025 |
| THE Eikon Charity | Health & social care | 2005 |
| THE Electronic Beach Ltd | Other services | 2017 |
| THE Empowered Entrepreneur Ltd | Health & social care | 2026 |
| THE Gentlemen's Grills Ltd | Hospitality | 2024 |
| THE Gondalia Table Limited | Hospitality | 2024 |
| THE Hangry Shack Limited | Hospitality | 2023 |
| THE Hayden-Kellard Property Group Ltd | Construction | 2026 |
| THE Herd Group Employee Ownership Trustee Limited | Professional & scientific | 2022 |
| THE Historians Group Ltd | Information & communication | 2025 |
| THE House of Scribes Ltd | Information & communication | 2024 |
| THE International Golf Charity | Arts & recreation | 2000 |
| THE JMB Group Ltd | Administrative & support | 2019 |
| THE Jolly Merchants Ltd | Wholesale & retail | 2024 |
| THE London Consultancy Ltd | Professional & scientific | 1997 |
| THE Lucky Property Company Limited | Households | 2020 |
| THE Moulding Studio Ltd | Manufacturing | 2023 |
| THE Nyarkohs Limited | Health & social care | 2022 |
| THE Original Car Spa Limited | Wholesale & retail | 2012 |
| THE Padfield Partnership Limited | Professional & scientific | 2024 |
| THE Paradise Firewood Ltd | Other services | 2015 |
| THE Pedagogs Ltd | Education | 2016 |
| THE Punter Limited | Arts & recreation | 2000 |
| THE Resourcing Team Limited | Administrative & support | 2023 |
| THE Siciliano Limited | Wholesale & retail | 2024 |
| THE Store for Music Limited | Wholesale & retail | 2005 |
| THE Support Foundation Limited | Health & social care | 2010 |
| THE Tyres Egham Ltd | Wholesale & retail | 2025 |
| THE Unstuffy Hotel Co Limited | Hospitality | 2003 |
| THE White Hart (Addlestone) Limited | Hospitality | 2013 |
| THE Willows (Chertsey) Management Company Limited | Households | 2006 |
| THE Works Counsel Ltd | Professional & scientific | 2024 |
| Thetravelbookings Ltd | Administrative & support | 2021 |
| Think Faith Limited | Information & communication | 2023 |
| Thinksecurity Ltd | Information & communication | 2009 |