| Teachers Today Limited | Education | 2014 |
| Tech Women Collective Ltd | Professional & scientific | 2022 |
| Technical Production Services Ltd | Administrative & support | 2015 |
| Telham Close Management Limited | Extraterritorial | 2015 |
| Tenon Search Ltd | Professional & scientific | 2021 |
| TH Lambert Properties Ltd | Real estate | 2020 |
| THE Abbey Dance Academy Ltd | Education | 2020 |
| THE Advice Business UK Limited | Professional & scientific | 2012 |
| THE Alchemy Automation Group Ltd | Financial services | 2015 |
| THE Allenby Agency Ltd | Administrative & support | 2025 |
| THE Anti-Burnout Club Ltd | Wholesale & retail | 2021 |
| THE Association for British Working Equitation (Abwe) Community Interest Company | Arts & recreation | 2016 |
| THE Beauty Shack NLC Ltd | Other services | 2025 |
| THE Bottom Line (UK) Limited | Professional & scientific | 1998 |
| THE Building & Carpentry Co. Limited | Construction | 2017 |
| THE Claude Jessett Trust Company | Arts & recreation | 2002 |
| THE Clean Suit Company Limited | Extraterritorial | 1989 |
| THE Drummer Agency Limited | Professional & scientific | 2015 |
| THE Drummer Collective Limited | Professional & scientific | 2001 |
| THE Elms Nursery Ltd | Education | 2026 |
| THE Famous OMG | Arts & recreation | 2019 |
| THE Formation Club Ltd | Administrative & support | 2026 |
| THE Great Out-Tours Limited | Education | 2011 |
| THE Guitar Showroom Ltd | Wholesale & retail | 2020 |
| THE Hurst Residents Association Limited | Households | 2003 |
| THE Lemongrass (RYE) Ltd | Hospitality | 2023 |
| THE Local Oracle Limited | Information & communication | 2006 |
| THE Marketing Support People Limited | Extraterritorial | 2020 |
| THE Online Nutritional Education Ltd | Health & social care | 2019 |
| THE Peace & Serenity Company Limited | Wholesale & retail | 2024 |
| THE Pink Cabbage Co Limited | Hospitality | 2021 |
| THE Profound and Multiple Impairment Service | Health & social care | 1992 |
| THE Red House Consultancy Limited | Professional & scientific | 2019 |
| THE Rowan Residents Association Limited | Households | 1989 |
| THE Skills Development Service Media LLP | | 2009 |
| THE Sussex Steam Engine Club Limited | Arts & recreation | 2013 |
| THE Tunstall Jubilee Foundation | Health & social care | 2013 |
| THE Vault Cinema - Heathfield CIC | Arts & recreation | 2025 |
| THE Vintage Engineering Company Limited | Professional & scientific | 2021 |
| THE Weald Energy Network Ltd | Professional & scientific | 2025 |
| THE Wild Pharma Ltd | Wholesale & retail | 2010 |
| Thecurryinn Limited | Hospitality | 2026 |
| Thomas.Ingram Ltd | Professional & scientific | 2020 |
| Thorndale Cleaning Solutions Ltd | Administrative & support | 2026 |
| Thorndale Developments Ltd | Construction | 2024 |
| Thorndale Homes Limited | Hospitality | 2025 |
| Thorntree Residents Association Limited | Households | 2013 |
| Three Acre Brewery Limited | Manufacturing | 2018 |
| Three Acre Pubs Limited | Hospitality | 2024 |
| Tierney Marine Ltd | Professional & scientific | 2023 |
| Tikaboo Limited | Information & communication | 2022 |
| Tinkers Park Limited | Arts & recreation | 2003 |
| TJ & MJ Holdings Limited | Financial services | 2025 |
| TLC Floorings Contract Services Ltd | Construction | 2021 |
| TOM Shotter Building & Carpentry Limited | Construction | 2019 |
| Torque Bodyworks Ltd | Wholesale & retail | 2019 |
| Torque GT Limited | Wholesale & retail | 2004 |
| Torque Properties Limited | Real estate | 2019 |
| Tottingworth Farms Limited | Agriculture & fishing | 1964 |
| TP Consultants Limited | Professional & scientific | 2020 |
| Transpallets Limited | Transport & logistics | 2017 |
| Treasure Island Resources Limited | Mining & quarrying | 2017 |
| Treasure IT Limited | Financial services | 2006 |
| Tree House Learning C.I.C. | Education | 2015 |
| Trevaskis Consulting Limited | Professional & scientific | 2002 |
| Trippertrack Ltd | Information & communication | 2026 |
| Trojion Consulting Ltd | Information & communication | 2013 |
| Trowell Properties Ltd | Real estate | 2020 |
| Truth Tribe Ltd | Information & communication | 2020 |
| Truvesta Ltd | Construction | 2025 |
| Tsct Hall Investments Ltd | Financial services | 2020 |
| Tunbridge Wells Planning Advisory Company Limited | Real estate | 2013 |
| Twinpier Publishing Limited | Information & communication | 2010 |
| Twissells Mill Limited | Administrative & support | 2019 |
| Twisted Gummy Co Limited | Wholesale & retail | 2023 |
| Two Tails (Sussex) Ltd | Hospitality | 2024 |
| TY Bach Cottages Ltd | Real estate | 2024 |
| Udimore Tractor Shop Limited | Wholesale & retail | 2012 |
| UK Curry Championship Ltd | Arts & recreation | 2026 |
| UK Teachers Ltd | Education | 2021 |
| Ukrainian Kids Ltd | Education | 2024 |
| Unset Element Limited | Wholesale & retail | 2024 |
| Untitled Records Ltd | Information & communication | 2023 |
| UP and Running Therapy Ltd | Health & social care | 2026 |
| Uplye Management Company Limited | Real estate | 1989 |
| Uproot Capital Ltd | Financial services | 2025 |
| Urban Pulse News Agent Ltd | Information & communication | 2025 |
| Urbanbuy Property Management Limited | Households | 1987 |
| V&C Estates Ltd | Real estate | 2023 |
| VA VA Venison Ltd | Hospitality | 2021 |
| Vachers Ltd | Wholesale & retail | 2023 |
| Vacuum Windows South Ltd | Manufacturing | 2025 |
| Vanadium Property Services Limited | Construction | 2011 |
| Vaters Limited | Transport & logistics | 2014 |
| Velocity Asset Financing Ltd | Financial services | 2024 |
| Venture Sponsorship Limited | Professional & scientific | 2025 |
| Victoria Louise Legal Limited | Professional & scientific | 2025 |
| Vince Groundworks & Construction Ltd | Construction | 2021 |
| Vines Cross Pods Ltd | Hospitality | 2025 |
| Vinic Surveying Services Limited | Administrative & support | 2003 |