| Thlp Group Ltd | Information & communication | 2024 |
| Thobani's (UK) Limited | Real estate | 1999 |
| Thomas Ling Ltd | Manufacturing | 2009 |
| Thomas Nathaniel LEE Ltd | Real estate | 2022 |
| Three Peaks Performance Ltd | Arts & recreation | 2020 |
| Three Towns Brewing Company Limited | Manufacturing | 2023 |
| THREE49 Holdings Limited | Real estate | 2024 |
| Thrive Personal Training Gym Ltd | Education | 2016 |
| TIC TAC Mini Market Ltd | Wholesale & retail | 2026 |
| Tiddlywinks Pre-School (Leyland) Ltd. | Education | 2012 |
| Tiger Engineering Services Ltd | Other services | 2017 |
| TIGER65 Limited | Construction | 2021 |
| Tijs Properties Limited | Real estate | 2025 |
| Tiki Cafe Ltd | Hospitality | 2025 |
| Tilemaster Adhesives Limited | Administrative & support | 2000 |
| Tiling Supply Co Ltd | Wholesale & retail | 2017 |
| Time for YOU Blackburn & Clitheroe Ltd | Other services | 2019 |
| Timeless Turnarounds Ltd | Construction | 2025 |
| Tionibus Ltd | Health & social care | 2019 |
| TJ GEM Developments Ltd | Real estate | 2024 |
| TJC Distribution Limited | Transport & logistics | 2025 |
| TJM & Clarke Dressage Ltd | Agriculture & fishing | 2025 |
| TJM Bespoke Carpentry Ltd | Manufacturing | 2024 |
| TJM Build Holdings Ltd | Real estate | 2023 |
| TJM Build Properties Ltd | Real estate | 2025 |
| TJM Building & Joinery Ltd | Construction | 2015 |
| TK Tax Consultants Limited | Professional & scientific | 2014 |
| TK Tax Payroll Services Ltd | Professional & scientific | 2020 |
| TKR Construction Ltd | Construction | 2019 |
| TKR Holdings Ltd | Financial services | 2019 |
| TM Water Ltd | Professional & scientific | 2026 |
| TME Holdings Ltd | Professional & scientific | 2015 |
| TMT Medical Aesthetics Limited | Real estate | 2026 |
| TNC Leather Limited | Arts & recreation | 2023 |
| Toby Sinclair Coaching Ltd | Information & communication | 2024 |
| Toddlers Children's Nursery Limited | Education | 2020 |
| Together Coffee Roasters Limited | Wholesale & retail | 2026 |
| Tolero Consulting Limited | Information & communication | 2007 |
| Toll Bar Waters Limited | Construction | 2017 |
| TOM Bidwell Ltd | Information & communication | 2012 |
| Topics Solutions Ltd | Professional & scientific | 2021 |
| Torn Games Ltd | Information & communication | 2020 |
| Total Roofing(Nw) Limited | Construction | 2024 |
| Town and Village Financial Services Limited | Financial services | 2001 |
| Town Brow Boarding Kennels Ltd | Other services | 2023 |
| Towngate Tanning Limited | Other services | 2026 |
| TPB Training Limited | Other services | 2011 |
| Tpb-Group Ltd | Professional & scientific | 2021 |
| Traceycouriers Ltd | Transport & logistics | 2025 |
| Traction Resource Limited | Construction | 2015 |
| Tracy Kelly Print & Design Limited | Manufacturing | 2014 |
| Trade Frames Upvc & Aluminium Ltd | Construction | 2024 |
| Trailer Care UK Ltd | Manufacturing | 2002 |
| TRAMP2LEAN Leyland Limited | Arts & recreation | 2016 |
| Travel Partners (London) Limited | Administrative & support | 2017 |
| Travel Republic Ltd | Administrative & support | 2003 |
| Travelbag Limited | Administrative & support | 1979 |
| Tree Check Limited | Agriculture & fishing | 1997 |
| Tregot Chase Land Development Limited | Construction | 2012 |
| Trendfusion Co. Limited | Wholesale & retail | 2025 |
| Trest Limited | Wholesale & retail | 2021 |
| Trickdogs Training Ltd | Other services | 2025 |
| Tricord Management Limited | Real estate | 2023 |
| Triple Fitness Ltd | Education | 2021 |
| Trunks Tree Care Ltd | Agriculture & fishing | 2018 |
| Trwk Ltd | Transport & logistics | 2021 |
| Turbo Snails Bikes Ltd | Wholesale & retail | 2018 |
| TWILIGHT28 Ltd | Professional & scientific | 2025 |
| Twin Lakes Properties Limited | Real estate | 2016 |
| Twins UK Support CIC | Health & social care | 2025 |
| Twist Leotards Ltd | Manufacturing | 2026 |
| TWP Holding Limited | Real estate | 2018 |
| Tycerrig Limited | Agriculture & fishing | 1999 |
| TYR Formulations Ltd | Professional & scientific | 2023 |
| Udevelop CIC | Education | 2020 |
| UK Flue Installations Ltd | Other services | 2017 |
| UK Spares Estore Ltd | Wholesale & retail | 2015 |
| Ultimate Vehicle Remaps Ltd | Manufacturing | 2020 |
| Ultra Aesthetics Ltd | Other services | 2019 |
| Ultra Storage Limited | Real estate | 2019 |
| Underskin Ltd | Arts & recreation | 2023 |
| Unify Communications (Cornwall) Limited | Wholesale & retail | 2023 |
| Unify Dance UK Limited | Arts & recreation | 2015 |
| Urban Woods Joinery Ltd | Construction | 2021 |
| Urethane Remedials Limited | Water & waste | 2020 |
| V Adams Group Holdings Ltd | Financial services | 2022 |
| V Mckelvie Ltd | Other services | 2022 |
| V.O.L.K.A.S. Limited | Transport & logistics | 2022 |
| Valentte Limited | Wholesale & retail | 2015 |
| Valley Garage (NW) Ltd | Wholesale & retail | 2025 |
| Valley Recovery Ltd | Transport & logistics | 2025 |
| Value Vault Leyland Ltd | Wholesale & retail | 2026 |
| Vanilla Hair Designs and Beauty Ltd. | Other services | 2015 |
| Vapour Planet Ltd | Wholesale & retail | 2026 |
| VAR Consulting Services Limited | Real estate | 2015 |
| Vastex Limited | Construction | 2014 |
| Vcuk Property Management Limited | Real estate | 2004 |
| VCV Pang Ltd | Transport & logistics | 2025 |
| VD Properties Ltd | Real estate | 2024 |
| Velvet Talent Management Ltd | Arts & recreation | 2025 |