| Techmomentum Holdings Limited | Financial services | 2023 |
| Tedstar Limited | Information & communication | 2012 |
| Teedoubleyou Holdings Limited | Professional & scientific | 2024 |
| Teedoubleyou Property Limited | Real estate | 2025 |
| Telham Enterprises Ltd | Real estate | 1999 |
| THE ASH Tree Inn Limited | Hospitality | 2017 |
| THE Battle Chapel Ltd | Hospitality | 2024 |
| THE BBQ Project Limited | Hospitality | 2017 |
| THE Boombox UK Entertainment Ltd | Arts & recreation | 2018 |
| THE Development Hub Ltd | Professional & scientific | 2021 |
| THE Emperor's New Shoes Ltd | Manufacturing | 2011 |
| THE Flower Shed Sussex Limited | Wholesale & retail | 2020 |
| THE Four Legged Company Limited | Professional & scientific | 1993 |
| THE Fuller Picture Limited | Construction | 2011 |
| THE Fíor Collective Ltd | Hospitality | 2022 |
| THE Hidden Hillside Limited | Hospitality | 2018 |
| THE IT Service Limited | Information & communication | 2009 |
| THE Linen Solution Ltd | Administrative & support | 2025 |
| THE Little Farmers Co-Op Ltd | Agriculture & fishing | 2023 |
| THE New Inn Westfield Ltd | Hospitality | 2014 |
| THE Oak Installers Ltd | Manufacturing | 2018 |
| THE Old Forge Restaurant Limited | Hospitality | 2010 |
| THE Path Financial Limited | Financial services | 2018 |
| THE Pilates Boutique Ltd | Arts & recreation | 2019 |
| THE Playwrite Group Limited | Wholesale & retail | 2001 |
| THE Powder Rooms Battle Ltd | Other services | 2022 |
| THE Renovation Atelier Ltd | Construction | 2026 |
| THE Secret Farm Ltd | Agriculture & fishing | 2026 |
| THE Simple Pilgrim Company Limited | Administrative & support | 2016 |
| THE Sussex Seaweed Company Ltd | Wholesale & retail | 2026 |
| THE Therapy Partnership Limited | Education | 2025 |
| Theme BOW Limited | Administrative & support | 2018 |
| Thomas Bryant & Sons Ltd | Wholesale & retail | 2009 |
| Thomas Rademaker Ltd | Extraterritorial | 2025 |
| Thorne Builders Limited | Construction | 2008 |
| Thorpe's Wine Bars Ltd | Hospitality | 2020 |
| Three Amigos Competitions Ltd | Arts & recreation | 2025 |
| Tillstar Films Limited | Information & communication | 2014 |
| Tilly Homes Ltd | Construction | 2022 |
| Timeless Marquees Ltd | Administrative & support | 2024 |
| Timur Films Limited | Information & communication | 2011 |
| Tinkers Hatch Limited | Health & social care | 2006 |
| TK Platinum Property Services Ltd | Administrative & support | 2025 |
| Tnpubs Limited | Hospitality | 2023 |
| TNT Plumbing & Heating Ltd | Construction | 2017 |
| Tollgate Lock Residents RTM Company Limited | Real estate | 2005 |
| Tollgate Lock RTE Company Ltd | Real estate | 2007 |
| Tollgates Management Company (Battle) Limited | Households | 2020 |
| TOM & Tash Richardson Holdings Limited | Financial services | 2025 |
| Tomasetti Lettings Ltd | Real estate | 2021 |
| Tomasetti Properties Ltd | Construction | 2019 |
| Torner Films Limited | Information & communication | 2014 |
| TP Aviation Ltd | Wholesale & retail | 2019 |
| Treat Hair & Beauty Limited | Other services | 2014 |
| Trees & Ponds Eco Ltd | Professional & scientific | 2021 |
| TRH Ventures Ltd | Professional & scientific | 2024 |
| Trident Financial Ltd | Professional & scientific | 2018 |
| True Construction Ltd | Construction | 2020 |
| True Heart Theatre | Arts & recreation | 2007 |
| True Vine Storage & Rentals Ltd | Administrative & support | 2002 |
| TS Access Services Limited | Professional & scientific | 2019 |
| Tsrt Holdings Ltd | Hospitality | 2024 |
| TW South East Limited | Construction | 2019 |
| Uaspro-Inspect Limited | Professional & scientific | 2024 |
| UK Porsche Sales Limited | Wholesale & retail | 2025 |
| UK Skinboss Health and Wellness Ltd | Wholesale & retail | 2025 |
| Ukca Limited | Agriculture & fishing | 2004 |
| Uptop Brickwork Contractor Limited | Construction | 2022 |
| Usherwood Mechanical & Electrical Ltd | Construction | 2025 |
| Valentina Productions Limited | Professional & scientific | 2013 |
| Vantage Point Property Management Ltd | Real estate | 2011 |
| Vere Meadows (Management Company) Ltd | Administrative & support | 2020 |
| Vertex Roofing and Leadwork Specialists Ltd | Construction | 2022 |
| Vicarys of Battle Limited | Real estate | 1958 |
| Victoria Joinery Limited | Construction | 2002 |
| Victoria Wood & Company Accountants Limited | Professional & scientific | 2017 |
| Vine House Care Ltd | Health & social care | 2015 |
| Volks Minor Aviation Limited | Transport & logistics | 2008 |
| Voltcellar Ltd | Manufacturing | 2024 |
| Vortex Infrastructure Products Ltd | Wholesale & retail | 2025 |
| VW Festivals Ltd | Arts & recreation | 2018 |
| W & E Levis Ltd | Construction | 2015 |
| W. Kerr & SON Limited | Agriculture & fishing | 2009 |
| Warnes Costs Consultants Ltd | Professional & scientific | 2013 |
| Warrior SQ Ltd | Professional & scientific | 2024 |
| Watchoverme Ltd | Manufacturing | 2009 |
| Watermill Skinners Lane Limited | Households | 2021 |
| Watermill Valley Limited | Agriculture & fishing | 2014 |
| Wazir Medical Events London Limited | Professional & scientific | 2012 |
| WE DO Creative Ltd | Professional & scientific | 2024 |
| We'Ll Mind Your Own Business (South) Ltd | Professional & scientific | 2021 |
| Wealden Drainage Ltd | Construction | 2014 |
| Webd Ltd | Information & communication | 2020 |
| Westfield Cricket Club CIC | Arts & recreation | 2023 |
| Westridge Bodiam Park Limited | Construction | 2020 |
| Whatlington Consulting Ltd | Professional & scientific | 2017 |
| Whats on Media Limited | Information & communication | 2003 |
| Whistling Thorn Films Limited | Information & communication | 2000 |
| White House Poultry Farm | | 1996 |
| WHY Consultancy Ltd | Education | 2011 |