| Tiny Wear Limited | Wholesale & retail | 2006 |
| Tlco Ltd | Real estate | 2025 |
| Toddy's Autos Tyre & Motor Services Ltd | Professional & scientific | 2026 |
| Tompkins Management Services Limited | Administrative & support | 2014 |
| Toolsalesuk Ltd | Wholesale & retail | 2025 |
| Toothpix Ltd | Information & communication | 2008 |
| Total Waste Water Systems (UK) Ltd | Water & waste | 2010 |
| TQC Training and Consultancy Ltd | Education | 2014 |
| Tracey Sewter Limited | Other services | 2007 |
| Tradeaxis Group Ltd | Wholesale & retail | 2025 |
| Trafosys Limited | Professional & scientific | 2008 |
| Trailer and Winch Solutions Limited | Manufacturing | 2007 |
| Trans Atlantic Line (UK) Limited | Transport & logistics | 1999 |
| Trans Atlantic Shipping Limited | Extraterritorial | 2009 |
| Trans Europe Transport Services Limited | Transport & logistics | 2009 |
| Transition Belper CIC | Extraterritorial | 2012 |
| Treacle Pubs Ltd | Hospitality | 2025 |
| Treat Yourself Industries Limited | Information & communication | 2019 |
| Tree House Trek Ltd | Arts & recreation | 2024 |
| Treecle Trains Ltd | Professional & scientific | 2026 |
| Treewise Belper Ltd | Administrative & support | 2026 |
| Tribbensee Ltd | Wholesale & retail | 2022 |
| Tribe Holdings Limited | Households | 2017 |
| Triskelle Pictures Ltd. | Information & communication | 2014 |
| Trix Academy Limited | Arts & recreation | 2014 |
| Truvolution Limited | Information & communication | 2006 |
| Trydafon Limited | Energy | 2009 |
| TS Leisure Limited | Arts & recreation | 2024 |
| TSD Properties Limited | Real estate | 2025 |
| TTJ Building Ltd | Other services | 2025 |
| Turner Aviation Consultancy Ltd | Professional & scientific | 2019 |
| TW Auto Engineers Holdings Limited | Financial services | 2026 |
| TW Auto Engineers Limited | Wholesale & retail | 2003 |
| Twead Ltd | Professional & scientific | 2024 |
| Two Magpies Consultancy Limited | Professional & scientific | 2021 |
| Typeset Attack Limited | Manufacturing | 2024 |
| Tyrone Electrical Services Ltd | Construction | 2012 |
| UK Angling Supplies Ltd | Wholesale & retail | 2014 |
| UK Emissions Solutions Limited | Manufacturing | 2026 |
| UK Event Medix Ltd | Health & social care | 2022 |
| UK FSW Ltd | Professional & scientific | 2023 |
| UK Leisure Connections Limited | Wholesale & retail | 2022 |
| UK Pumps & Systems Limited | Manufacturing | 2013 |
| Unified Communications Birmingham User Group CIC | Information & communication | 2014 |
| Unity IS Community CIC | Arts & recreation | 2026 |
| Universal Aquascapes Limited | Extraterritorial | 2021 |
| Upper Northfield Close Management Company Limited | Households | 2020 |
| UPS Power Protection Ltd | Administrative & support | 2016 |
| Urbo (West Bar) 2 Limited | Professional & scientific | 2020 |
| Urbo (West Bar) Limited | Professional & scientific | 2015 |
| V and B Retail Limited | Wholesale & retail | 2010 |
| V G Sales & Marketing Limited | Wholesale & retail | 2007 |
| V2 Aviation Limited | Professional & scientific | 2021 |
| Vaillant European Holdings Limited | Professional & scientific | 1900 |
| Vaillant Holdings Limited | Financial services | 1969 |
| Vaillant Home Products Limited | Professional & scientific | 1955 |
| Vaillant Limited | Manufacturing | 1976 |
| Vaillant Management Limited | Professional & scientific | 2000 |
| Vaillant Netherlands Holdings Limited | Professional & scientific | 1982 |
| Vaillant R & M Limited | Professional & scientific | 1989 |
| Van Meurs Consulting Ltd | Professional & scientific | 2020 |
| Vanick Consultancy Services Ltd | Information & communication | 2005 |
| Velo Bavarian Ltd | Wholesale & retail | 2020 |
| Verba Advisory Ltd | Professional & scientific | 2021 |
| Verba Investments Ltd | Real estate | 2024 |
| Veritas Recruitment Services Ltd. | Administrative & support | 2016 |
| Versine Electrical Limited | Professional & scientific | 2017 |
| VET Vision AI Limited | Professional & scientific | 2023 |
| Vetcare@Home Limited | Professional & scientific | 2016 |
| Vetcare@Peace Limited | Professional & scientific | 2025 |
| Videra Services Ltd | Professional & scientific | 2015 |
| Vietnamese Translation Limited | Professional & scientific | 2025 |
| Viken Group Limited | Financial services | 2022 |
| Viken Property Ltd | Real estate | 2019 |
| Viking Shields Limited | Wholesale & retail | 2015 |
| Viking Sky Holdings Ltd | Real estate | 2023 |
| Virtual Composites Ltd | Professional & scientific | 2019 |
| Virtue Business Services Ltd | Professional & scientific | 2021 |
| Volmix Limited | Manufacturing | 2017 |
| W.E.Clarke Limited | Wholesale & retail | 1962 |
| Wakebridge Limited | Real estate | 2019 |
| Walker Thompson Developments Ltd | Construction | 2021 |
| Walkers Butcher Shop Limited | Hospitality | 2014 |
| Walters Construction Limited | Construction | 2006 |
| Ward Automotive Movement Ltd | Transport & logistics | 2024 |
| Warwood Consulting Limited | Information & communication | 2021 |
| Water Commissioning Services Limited | Professional & scientific | 2017 |
| Water System Services Limited | Water & waste | 2024 |
| Watson Paintwork Ltd | Construction | 2026 |
| WE DO Property Midlands Ltd | Real estate | 2023 |
| WE Have a Solution Ltd | Manufacturing | 2022 |
| Webiness UK Limited | Information & communication | 2009 |
| Webs Fire and Security Ltd | Public administration | 2025 |
| Wellington Court Mews Limited | Households | 1997 |
| Wells Street Property Ltd | Real estate | 2019 |
| Weonlyhadtenmen Ltd | Real estate | 2021 |
| West Bar Square Management Company Limited | Real estate | 2022 |
| West Main 1961 Limited | Extraterritorial | 2013 |
| Westborn Home Limited | Manufacturing | 2022 |
| Westborn Ltd. | Manufacturing | 2009 |