| Totalview Consultancy Services Limited | Information & communication | 2017 |
| Toucan BFP Wealth Management Ltd | Financial services | 2022 |
| Tower Close Management Company Limited | Professional & scientific | 2000 |
| Town & Country Interiors (East Anglia) Limited | Construction | 2004 |
| TR Assets LLP | | 2022 |
| Tracys BE OUR Guest Experiences Limited | Hospitality | 2025 |
| Trade Stairparts Ltd | Manufacturing | 2006 |
| Trans KOY Ltd | Transport & logistics | 2017 |
| Transport Services Suffolk Ltd | Administrative & support | 2024 |
| Travel & Leisure Group Limited | Administrative & support | 1992 |
| Travelintime Limited | Information & communication | 1991 |
| Treadfirst Tyre and Exhaust Limited | Wholesale & retail | 1986 |
| Treetop Services (Essex Tree Surgeons) Limited | Agriculture & fishing | 2015 |
| Tridentlifeengineering Ltd | Professional & scientific | 2025 |
| Trinity Road (Darlington) Management Company Limited | Households | 1999 |
| Triple Zero HQ Limited | Other services | 2024 |
| Trojan Technical Services Ltd | Professional & scientific | 2007 |
| Troman Finance Limited | Financial services | 1990 |
| Trusense Limited | Professional & scientific | 2007 |
| Trust Homecare Solution South Suffolk Limited | Health & social care | 2022 |
| TSG Terroir Limited | Arts & recreation | 2015 |
| Tsuru Limited | Hospitality | 2007 |
| Tudor Board Services Ltd | Real estate | 2026 |
| Tumika Limited | Information & communication | 2010 |
| Tumley Holdings Limited | Financial services | 2024 |
| Turkentine Transport Ltd | Transport & logistics | 2017 |
| Turner Tool Hire Limited | Administrative & support | 1977 |
| Turton Developments Ltd | Construction | 2024 |
| TWB Bespoke Limited | Construction | 2022 |
| TWB Kitchens Limited | Wholesale & retail | 2024 |
| Twig Services Limited | Financial services | 2015 |
| Twinstead Hall Farms,Limited | Agriculture & fishing | 1946 |
| Two Sevens Deli Ltd | Wholesale & retail | 2023 |
| Tworthopaedics Limited | Health & social care | 2014 |
| UK Evidence Limited | Administrative & support | 2005 |
| UK Hydrogen and Fuel Cell Association | Administrative & support | 2006 |
| Uksleepy Ltd | Wholesale & retail | 2023 |
| Umove on Ltd | Information & communication | 2026 |
| Unibuyer London Ltd | Wholesale & retail | 2022 |
| Unique Developments (Suffolk) Ltd | Real estate | 2026 |
| Unite Build Limited | Construction | 2022 |
| Uniten Partners Ltd | Wholesale & retail | 2018 |
| Unreel Network Ltd | Information & communication | 2025 |
| Up-Beat Entertainment Ltd | Arts & recreation | 2019 |
| UV Colour Ltd | Administrative & support | 2019 |
| UV Light Technology Limited | Manufacturing | 1997 |
| Uxbridge (Southside) Residents Company Limited | Other services | 2017 |
| V & S (NO 19) Limited | Administrative & support | 1996 |
| V Arora Ltd | Wholesale & retail | 2023 |
| Valentine Mawes Ltd | Professional & scientific | 2024 |
| Valkyrie Paintworks Ltd | Administrative & support | 2008 |
| Valsab Ltd | Real estate | 2017 |
| Van Buck Direct.Com Ltd | Wholesale & retail | 2016 |
| Vape Locker Ltd | Other services | 2017 |
| Varro Ltd | Wholesale & retail | 2024 |
| VB Painting and Decorating Ltd | Construction | 2014 |
| Vefel Limited | Financial services | 2019 |
| Veltora Global Ltd | Other services | 2025 |
| Venus of Sudbury Properties Ltd | Real estate | 2025 |
| Verde New Homes Limited | Construction | 2023 |
| Verde Property Limited | Real estate | 2023 |
| Vermont Invest Ltd | Construction | 2023 |
| Vertex Pro Fitness Limited | Arts & recreation | 2020 |
| Vertical Growth Ltd | Agriculture & fishing | 2022 |
| Victoria Atkinson Acton Limited | Hospitality | 2017 |
| Victoria Court (Aston on Clun) Management Ltd | Households | 2025 |
| Victoria Court (1999) Management Company Limited | Households | 1999 |
| Victoria Heights Property Limited | Households | 2022 |
| Victoria Mansions Properties Limited | Households | 1999 |
| Victoria Place Management Limited | Households | 1983 |
| Viking Builders Limited | Manufacturing | 2016 |
| Vikings Logistiks Ltd | Transport & logistics | 2025 |
| Vine Wine and Dine 2 Limited | Hospitality | 2023 |
| Vital Harmony Ltd | Wholesale & retail | 2024 |
| Viveka Retail Ltd | Wholesale & retail | 2026 |
| Vivlia Limited | Information & communication | 2012 |
| Voczero Limited | Professional & scientific | 2014 |
| Volume One (Clare) Limited | Other services | 2013 |
| W & D Electrical Limited | Construction | 2014 |
| W P Livestock LLP | | 2020 |
| Wain Ltd | Professional & scientific | 2022 |
| Wainsford's Dairy Limited | Agriculture & fishing | 1952 |
| Walden Pond Pictures Limited | Information & communication | 2021 |
| Walters Holdings Limited | Extraterritorial | 2003 |
| Warners CA Ltd | Information & communication | 2025 |
| Warrior Bpwe Limited | Other services | 2013 |
| Watersavers Limited | Manufacturing | 2009 |
| Wavelength Group Ltd | Financial services | 2025 |
| Wavelength Network Ltd | Information & communication | 2025 |
| WB Sudbury Ltd | Wholesale & retail | 2024 |
| WBB Contracts Limited | Construction | 2021 |
| WE ARE Unit Dance C.I.C. | Education | 2021 |
| WE Shape Ideas Ltd | Information & communication | 2013 |
| Weareunit Ltd | Information & communication | 2021 |
| Weavers 1969 Limited | Extraterritorial | 2013 |
| WEB100 Ltd | Information & communication | 2021 |
| Webb & Frost Ltd | Construction | 2024 |
| Webb Hydraulic Services Limited | Wholesale & retail | 1983 |
| Webbeo Limited | Professional & scientific | 2018 |
| Wedrum CIC | Education | 2021 |