| Tonik Collective Ltd | Wholesale & retail | 2025 |
| Total Steelwork Limited | Construction | 2025 |
| Tracked Works of Sussex Ltd | Construction | 2020 |
| Tradaz Property Ltd | Real estate | 2014 |
| Trade Frame Warehouse Limited | Construction | 2009 |
| Trade IT (Bucks) Limited | Information & communication | 1996 |
| Traditional Clay Roof Tiles Ltd | Wholesale & retail | 2012 |
| Trafalgar House Residents Association Limited | Households | 2001 |
| Trafalgar Mews Residents Limited | Households | 2017 |
| Train for Health Ltd | Arts & recreation | 2023 |
| Transformo Technology Consulting Ltd | Information & communication | 2025 |
| Transition Flat Roofing Limited | Construction | 2025 |
| Treads of Hailsham Limited | Wholesale & retail | 2005 |
| Treat Park Limited | Hospitality | 2025 |
| Treewise Tree Services Limited | Administrative & support | 2008 |
| Trentonhurst Limited | Households | 1983 |
| Tribe Drones Ltd | Information & communication | 2026 |
| Tribosim Limited | Professional & scientific | 2018 |
| Trilloproperty Ltd | Real estate | 2025 |
| Triton Roofing Limited | Construction | 2012 |
| True Sessions Limited | Information & communication | 2017 |
| Truforx Associates Limited | Education | 2013 |
| Trusted Nest Properties Ltd | Real estate | 2023 |
| Trusted Nest Properties Management Ltd | Real estate | 2026 |
| TS Fire Consulting Limited | Public administration | 2024 |
| TSD Interior and Exterior Ltd | Construction | 2021 |
| TSD Spraying Solutions Ltd | Construction | 2025 |
| Tucumcari General Supplies Limited | Professional & scientific | 1988 |
| Turkish VIP Cuts Ltd | Other services | 2025 |
| Twelve Stars Distribution Limited | Wholesale & retail | 2020 |
| Twelve Trees Integration Ltd | Health & social care | 2021 |
| Twenty 20 Recruitment Ltd | Administrative & support | 2005 |
| Twocan Ltd | Professional & scientific | 2025 |
| Tyella Trading Limited | Wholesale & retail | 2018 |
| Uberblue Ltd | Information & communication | 2009 |
| UK Car Park Management Limited | Administrative & support | 2010 |
| UK Signs Ltd | Professional & scientific | 2020 |
| Uncubed Technology Ltd | Manufacturing | 2017 |
| Unity Counselling and Coaching Ltd | Health & social care | 2011 |
| Untired ME Ltd | Health & social care | 2024 |
| USA to UK Shipping Ltd | Wholesale & retail | 2026 |
| Utopia Management Limited | Professional & scientific | 2011 |
| Vale Property Hastings Ltd | Real estate | 2025 |
| Valence Pictures Limited | Information & communication | 2012 |
| Vasileios Property Ltd | Real estate | 2024 |
| Veee Helicopters Limited | Extraterritorial | 2004 |
| Velosolutions Limited | Arts & recreation | 2010 |
| Veritek Global Holdings Limited | Administrative & support | 2012 |
| Veritek Global Limited | Manufacturing | 1986 |
| Vflyv Ltd | Real estate | 2018 |
| Vgemp Ltd | Health & social care | 2024 |
| Viceroy Court Residents Limited | Real estate | 1997 |
| Village Cider Limited | Manufacturing | 2025 |
| Village Thai Willingdon Ltd | Hospitality | 2022 |
| Vineyard Business Ltd | Professional & scientific | 2008 |
| Vintents Ltd | Hospitality | 2009 |
| Visual Bank Ltd | Information & communication | 2001 |
| Vitaprop Ltd | Real estate | 2017 |
| Vive LA Vida Eco Limited | Wholesale & retail | 2020 |
| Vivify HQ Ltd | Information & communication | 2013 |
| VLL Swale Ltd | Real estate | 2026 |
| Vorn Limited | Construction | 2004 |
| VXR Limited | Real estate | 1998 |
| W & a Appleton (Arlington) Limited | Agriculture & fishing | 1963 |
| W & E Consulting Limited | Professional & scientific | 2017 |
| Wagara CIC | Education | 2025 |
| Wallerjones Limited | Information & communication | 2020 |
| Walsh & Associates Ltd | Financial services | 2012 |
| Wardrobe.Gg Ltd | Information & communication | 2025 |
| Wartling Gardens Management Company Limited | Administrative & support | 2014 |
| Wash Wizards East Sussex Ltd | Administrative & support | 2025 |
| Wave IT Systems Ltd | Wholesale & retail | 2026 |
| Waymark Works CIC | Information & communication | 2026 |
| WCL Enterprises Limited | Construction | 2026 |
| WDS Plumbing and Heating Ltd | Extraterritorial | 2017 |
| WE ARE RAM Construction Ltd | Construction | 2017 |
| WE FIX Sussex Ltd | Construction | 2026 |
| Weatherbox Limited | Arts & recreation | 1998 |
| Web BUG Ltd | Information & communication | 2023 |
| Web Builder Limited | Information & communication | 2018 |
| Wellness Coach and Mentors Ltd | Health & social care | 2025 |
| Welnen Investments Limited | Real estate | 1958 |
| Wessex Growcraft Ltd | Manufacturing | 2026 |
| West Park Financial Consultancy Limited | Administrative & support | 2023 |
| Whisper & Wild Ltd | Professional & scientific | 2022 |
| White Court Alfriston Management Limited | Professional & scientific | 1987 |
| White Hart Consultancy Ltd | Professional & scientific | 2018 |
| White Red House Ltd | Professional & scientific | 2025 |
| Whitham Hill Property Ltd | Real estate | 2025 |
| Wild Boards Limited | Wholesale & retail | 2016 |
| Wilderlands CIC | Agriculture & fishing | 2023 |
| Wildlight Productions Limited | Administrative & support | 2016 |
| Willis Properties Ltd | Real estate | 2003 |
| Winter Estates Holdings Limited | Financial services | 2026 |
| Winvest Advisory Ltd | Professional & scientific | 2024 |
| Wisesoft Corp Ltd | Information & communication | 2025 |
| With Love Media Ltd | Professional & scientific | 2023 |
| Withers Agencies Limited | Wholesale & retail | 1990 |
| Wittons Flooring Ltd | Construction | 2025 |
| Woodhouse Commercial Ltd | Real estate | 2024 |