| Top Truss Ltd | Construction | 2023 |
| Topmark Roofing Contractors Ltd | Construction | 2021 |
| Torcross House Limited | Hospitality | 2003 |
| Torton Farm Barns Management Limited | Households | 1996 |
| Torton Paws Limited | Agriculture & fishing | 2024 |
| Total Carpentry & Interiors Limited | Construction | 2022 |
| Totally Modular Group Limited | Administrative & support | 2017 |
| Toucan Beak Consultancy Ltd | Real estate | 2021 |
| Towerhurst Limited | Transport & logistics | 2012 |
| TP Partners Limited | Arts & recreation | 2013 |
| Tplusone Limited | Information & communication | 2023 |
| Tpmco Ltd | Information & communication | 2026 |
| TR Residentials Limited | Real estate | 2025 |
| TR Solar & Roofing Ltd | Construction | 2021 |
| Tracy Osborne Agencies Limited | Wholesale & retail | 2003 |
| Trade Monster Ltd | Wholesale & retail | 2022 |
| Trade Windows Bromsgrove Ltd | Wholesale & retail | 2019 |
| Trademoto Limited | Wholesale & retail | 2016 |
| Tragarbrit Ltd | Transport & logistics | 2024 |
| Train IT Midlands Ltd | Information & communication | 2010 |
| Trak Access Limited | Administrative & support | 2026 |
| Trak Integrations Limited | Information & communication | 2021 |
| Transflame Ltd | Wholesale & retail | 2019 |
| Transport Training Services (UK) Limited | Professional & scientific | 1998 |
| Trassica Ltd | Transport & logistics | 2022 |
| Travnerf Ltd | Transport & logistics | 2024 |
| Treacle Consultancy Limited | Professional & scientific | 2014 |
| Trebuchet Ltd | Information & communication | 2006 |
| Tredcape Ltd | Transport & logistics | 2024 |
| Trenfield Golf Limited | Arts & recreation | 2024 |
| Tribe Nightclub Limited | Hospitality | 2023 |
| Tribe Theatre Ltd | Education | 2021 |
| Trifinity Holdings Ltd | Professional & scientific | 2025 |
| Triforce Technology Ltd | Information & communication | 2024 |
| Triforen Ltd | Administrative & support | 2024 |
| Trigg Associates LLP | | 2010 |
| Trigg Holdings Limited | Administrative & support | 2010 |
| Trimpley Properties Limited | Real estate | 2015 |
| Trimpley View Limited | Hospitality | 2023 |
| Trinityfx Ltd | Arts & recreation | 2008 |
| Trip Labels & Print Limited | Manufacturing | 2007 |
| Triple AIM Ltd | Professional & scientific | 2017 |
| Triple L Construction Limited | Real estate | 2018 |
| Triplem Group Ltd | Transport & logistics | 2025 |
| Triplem Group Properties Ltd | Real estate | 2025 |
| Trojan Electrical Solutions Ltd | Construction | 2020 |
| TRS Manufacturing Group Ltd | Administrative & support | 2014 |
| Trueform Plastics Limited | Manufacturing | 1992 |
| Trueline Expanded Products Ltd. | Construction | 1994 |
| Truetek Ltd | Construction | 2025 |
| Trugion Limited | Wholesale & retail | 2020 |
| Trupti Edwards Financial Solutions Ltd | Financial services | 2026 |
| Trusted Home Tech Ltd | Other services | 2025 |
| TSC Innovations Limited | Information & communication | 2022 |
| Tucker Holdings Limited | Construction | 2019 |
| Tucker Homes Limited | Construction | 2019 |
| Tudor Consultancy Limited | Health & social care | 2017 |
| Tunerbro Garage Ltd | Wholesale & retail | 2025 |
| Turkish Style Barber DY10 Ltd | Other services | 2025 |
| Turn Media Limited | Administrative & support | 2012 |
| Turnbull Designs Limited | Wholesale & retail | 2021 |
| Turner & Rigsby Ltd | Construction | 2021 |
| Turnerround Productions Ltd | Information & communication | 2021 |
| Turners Gates Ltd | Manufacturing | 2013 |
| TVH U.K. Limited | Wholesale & retail | 1999 |
| Twenty Two Worcester Ltd | Hospitality | 2026 |
| Twigmoor Ltd | Administrative & support | 2022 |
| Twinmicrobars Ltd | Administrative & support | 2019 |
| Two Beach Restaurants Limited | Hospitality | 2011 |
| Two Counties Tree Care Ltd | Administrative & support | 2025 |
| Two SIX Electrical Limited | Construction | 2024 |
| Twojayz Co. Ltd | Professional & scientific | 2026 |
| Tykie Time Entertainment Ltd | Arts & recreation | 2026 |
| Tymcloth Ltd | Health & social care | 2024 |
| Tyne Asbestos Removal Ltd | Water & waste | 2024 |
| U S G Optical Services Ltd | Manufacturing | 2015 |
| U.V. Steel Limited | Wholesale & retail | 2005 |
| UB Kennedy Ltd | Wholesale & retail | 2022 |
| Ubuntu Care Group Ltd | Administrative & support | 2026 |
| UE Nunn Ltd | Health & social care | 2021 |
| UH Richardson Ltd | Transport & logistics | 2022 |
| UIM Interiors Ltd | Construction | 2020 |
| UK Flood Action Limited | Administrative & support | 2011 |
| UK Flood Community Limited | Administrative & support | 2011 |
| UK Flood Forum Limited | Administrative & support | 2011 |
| UK Games Expo Limited | Other services | 2012 |
| UK Hide and Skins Ltd | Agriculture & fishing | 2022 |
| UK Home Care Directory Ltd | Administrative & support | 2023 |
| UK Manufacturing Collective Ltd | Information & communication | 2026 |
| UK Pizza Lounge Ltd | Hospitality | 2025 |
| UK Security and Fire Services Ltd. | Administrative & support | 2003 |
| Ukcuf Ltd | Professional & scientific | 2024 |
| Ultimate Wraps Ltd | Wholesale & retail | 2016 |
| Ultra Renewable Energy Limited | Manufacturing | 2014 |
| Ultraslip Ltd | Wholesale & retail | 2018 |
| Ulvyora Ltd | Wholesale & retail | 2019 |
| Umalmert Ltd | Wholesale & retail | 2024 |
| Uni-Tech Limited | Manufacturing | 2017 |
| Unified Communication Works Limited | Information & communication | 2020 |
| Union Steel Group Limited | Financial services | 2018 |