| THE Marketing Boutique Limited | Professional & scientific | 2019 |
| THE OWL & Otter Limited | Wholesale & retail | 2015 |
| THE Plastic Soldier Company Limited | Manufacturing | 2009 |
| THE RAW Chocolate Company Limited | Manufacturing | 2018 |
| THE Rewire Collective Limited | Professional & scientific | 2025 |
| THE Southdown Brewery Limited | Manufacturing | 2011 |
| THE Terrys Cross Trust | Health & social care | 2020 |
| Thegrommetcompany Limited | Extraterritorial | 2017 |
| Think Promote Limited | Manufacturing | 2014 |
| Thinkqhse Ltd | Professional & scientific | 2019 |
| Thomas Rubix of Switzerland Limited | Information & communication | 2023 |
| Thrive Advisory Limited | Administrative & support | 2022 |
| Ticked Box Limited | Information & communication | 2005 |
| TIK TOK Holdings Ltd | Other services | 1999 |
| TIK TOK International Limited | Wholesale & retail | 2019 |
| TIK TOK Technologies Ltd | Information & communication | 2016 |
| TIK TOK Zapp Ltd | Information & communication | 2021 |
| Titusx Universal Group Ltd | Arts & recreation | 2014 |
| TLC Cleaning Ltd | Administrative & support | 2016 |
| TMJ Hospitality Ltd | Hospitality | 2024 |
| TOM Townsend Tennis Ltd | Administrative & support | 2021 |
| Topchip Limited | Extraterritorial | 2005 |
| Torch Computers Limited | Manufacturing | 1990 |
| Total Build Team Ltd | Construction | 2025 |
| Tottington Manor Ltd | Hospitality | 2021 |
| Towervalley Limited | Construction | 2001 |
| Town & Country Ponds Ltd | Agriculture & fishing | 2010 |
| Townley Design and Build Ltd | Construction | 2021 |
| Transparensea UK Limited | Wholesale & retail | 2023 |
| Trusler's Hill Farms Limited | Agriculture & fishing | 1923 |
| TRX Systems Ltd | Administrative & support | 2017 |
| TSC Consultants Limited | Professional & scientific | 2005 |
| Tudor (Steyning) Ltd | Real estate | 2026 |
| Turnstonefinds Ltd | Professional & scientific | 2020 |
| UMG UK Limited | Professional & scientific | 2009 |
| United Kingdom Consultancy Limited | Professional & scientific | 2015 |
| Urban Allotments Ltd | Hospitality | 2008 |
| Vacuum Process Solutions Limited | Manufacturing | 2017 |
| Vallmac Limited | Manufacturing | 2019 |
| Valvoline Service Centre Ullapool Limited | Wholesale & retail | 2014 |
| Van Oord UK Limited | Construction | 1984 |
| Verde Homes Limited | Construction | 2012 |
| Verde Property Consultants Limited | Construction | 2012 |
| Vernon Dene Limited | Construction | 2021 |
| Vevlak Ltd | Professional & scientific | 2013 |
| Vincarta Ltd | Professional & scientific | 2025 |
| Visual PT Limited | Information & communication | 2026 |
| Visualising Software Limited | Information & communication | 2021 |
| Vita Consulting Services Limited | Professional & scientific | 2003 |
| Wake (QA) Holdings Limited | Professional & scientific | 2011 |
| Wallbush Limited | Other services | 2008 |
| Walsingham Road Freehold Limited | Real estate | 2017 |
| Water World Sports (Sussex) Ltd | Extraterritorial | 2025 |
| Wave Scientific Ltd | Professional & scientific | 2012 |
| Wealden Tractors Export Ltd | Wholesale & retail | 2025 |
| Wellbeing Ideas Consultancy Limited | Professional & scientific | 2023 |
| Werkman Tech (UK) Ltd | Manufacturing | 2023 |
| Westlands Services Ltd | Hospitality | 2024 |
| Whale Construction Ltd | Construction | 2016 |
| Whites Aviation Ltd | Extraterritorial | 2020 |
| Whithurst Park Farms Ltd | Agriculture & fishing | 1973 |
| Wineham Investments Ltd | Construction | 2004 |
| Wineham Properties Limited | Real estate | 2011 |
| Winsor Medical Limited | Extraterritorial | 2010 |
| WMH Associates Limited | Professional & scientific | 2016 |
| Woodley Estates Limited | Construction | 2019 |
| Woodmancote Equestrian Ltd | Agriculture & fishing | 2025 |
| Workplace Legal Solutions (South) Ltd | Professional & scientific | 2012 |
| WRY Rentals Ltd | Real estate | 2021 |
| Wyld Experiences CIC | Education | 2023 |
| Xanthus Consulting Ltd | Professional & scientific | 2008 |
| York Court Hove Limited | Real estate | 1958 |
| Your Event Solution Ltd | Administrative & support | 2016 |
| Yuca Ltd | Wholesale & retail | 2011 |
| ZAM Property Investments Ltd | Real estate | 2016 |
| Zimple Technology Ltd | Other services | 2023 |