| Ticket Buddy Ltd | Information & communication | 2024 |
| Tickford Fields MK SPV Limited | Real estate | 2025 |
| Tides Freight Logistics Limited | Transport & logistics | 2025 |
| Tidm Roofing Insulation Services Ltd | Construction | 2025 |
| Tiferes Shulem Limited | Health & social care | 2018 |
| Tiger Trading (Manchester) Ltd | Wholesale & retail | 2021 |
| Tilehurst Estates Ltd | Real estate | 2018 |
| Tilley Education Collective Limited | Education | 2023 |
| Timatside Limited | Other services | 1978 |
| Timbaly Consultants Limited | Construction | 2014 |
| Timberlake Investments Limited | Real estate | 2012 |
| Time Specialist Support Limited | Other services | 2008 |
| TIME2TALKRELATIONSHIPS Ltd | Education | 2024 |
| Timi John Ltd | Other services | 2020 |
| Tingley Mill Limited | Real estate | 2018 |
| TINTIN1 Ltd | Health & social care | 2022 |
| Tiny Feet Day Nursery Limited | Health & social care | 2004 |
| Tiny Tots MCR Ltd | Health & social care | 2024 |
| Tinytots Vision Ltd. | Health & social care | 2001 |
| Tipical Limited | Professional & scientific | 2024 |
| Tipicall Limited | Information & communication | 1996 |
| Tips & Toes (North) 2 Limited | Other services | 2018 |
| Tips and Toes MCR Limited | Other services | 2026 |
| Tipsternote Limited | Information & communication | 2025 |
| Tiptop Property (M/C) Ltd | Real estate | 2005 |
| Tirzah Edge Ltd | Information & communication | 2025 |
| Tiscali UK Limited | Information & communication | 1997 |
| Titan Safety Ltd | Wholesale & retail | 2024 |
| TJC Fit Limited | Health & social care | 2025 |
| TK Property Group Ltd | Real estate | 2019 |
| TKC Group Holdings (Europe) Limited | Professional & scientific | 2022 |
| TKG Properties Limited | Real estate | 2025 |
| Tkjt UK Limited | Manufacturing | 2020 |
| Tkly Developments Ltd | Construction | 2020 |
| TL Enterprise MCR Ltd | Health & social care | 2019 |
| TL Heritage Properties Ltd | Real estate | 2025 |
| TL Realisations Ltd | Wholesale & retail | 1961 |
| Tlalim Chatham Ltd | Real estate | 2021 |
| TLG Capital Limited | Real estate | 2009 |
| TMA Holdings Limited | Professional & scientific | 2006 |
| TMC MCR Ltd | Real estate | 2020 |
| TMI Nechasim 1 Ltd | Real estate | 2025 |
| TMI Nechasim Limited | Real estate | 2025 |
| TMS World Services Limited | Transport & logistics | 2025 |
| Tmthair Ltd | Other services | 2020 |
| TMW Health & Care Services Limited | Health & social care | 2014 |
| TN Traders Limited | Wholesale & retail | 2017 |
| Tnba Building Services Ltd | Construction | 2022 |
| TO Migrate Integrate Contribute & Settle (Tomics) CIC | Hospitality | 2023 |
| To-Ko Transport Ltd. | Transport & logistics | 2019 |
| Toast Italy Ltd | Wholesale & retail | 2019 |
| Toasted Productions Limited | Information & communication | 2001 |
| TOB Consultant Limited | Professional & scientific | 2011 |
| Todd Estates Ltd | Real estate | 2019 |
| TOG Serrvices Limited | Transport & logistics | 2025 |
| Together Family Centre CIC | Education | 2016 |
| Together World Limited | Professional & scientific | 2018 |
| Tokyo LEE Imports Ltd | Wholesale & retail | 2017 |
| Tolmak Limited | Professional & scientific | 2016 |
| TOM Char Group Manchester UK Limited | Wholesale & retail | 2024 |
| Tomella Ltd | Professional & scientific | 2024 |
| Tomuca 2 Limited | Professional & scientific | 2023 |
| Tonec Installetions Ltd | Manufacturing | 2025 |
| Top Carers Limited | Health & social care | 2024 |
| Top Farm Nuneaton 1 SPV Limited | Real estate | 2025 |
| Top Farm Nuneaton 2 SPV Limited | Real estate | 2025 |
| Top Gear Motors MCR Limited | Wholesale & retail | 2019 |
| Top Grill Ltd | Hospitality | 2025 |
| Top Linen Ltd | Other services | 2016 |
| Top Secrets Clothing Ltd | Manufacturing | 2012 |
| Top Tyres and Quality Car Repairs Ltd | Wholesale & retail | 2019 |
| Topboi International Limited | Hospitality | 2025 |
| Toppick Store Ltd | Wholesale & retail | 2025 |
| Torah Veyirah Limited | Education | 2017 |
| Torchwood Trading Ltd | Wholesale & retail | 2019 |
| Torland Limited | Real estate | 1997 |
| Torn & Cotton Interiors Ltd | Professional & scientific | 2021 |
| Tornbox Ltd | Information & communication | 2020 |
| Toro Tapas Bar Ltd | Hospitality | 2025 |
| Torque X Motors Limited | Wholesale & retail | 2025 |
| Tortola Media Ltd | Other services | 2018 |
| Tosr Ltd | Construction | 2025 |
| Total Carbon Credits Ltd | Professional & scientific | 2024 |
| Totaling Ltd | Professional & scientific | 2025 |
| Totally Global Logistics Ltd | Transport & logistics | 2023 |
| Totem Global Group Ltd | Financial services | 2020 |
| Totem Medical Academy Limited | Health & social care | 2022 |
| Tots N Tykes (Leeds) Limited | Health & social care | 2008 |
| Tottenham Matzah Bakery Ltd | Manufacturing | 2012 |
| Totton Flats LH Ltd | Real estate | 2026 |
| Totton Flats Ltd | Real estate | 2026 |
| Toucan Beak Holdings Limited | Financial services | 2022 |
| Touch of Yetty Limited | Wholesale & retail | 2026 |
| Touchlink Business Services Limited | Wholesale & retail | 2010 |
| Tough Cookies ED CIC | Education | 2019 |
| Tough Cookies Education Ltd. | Education | 2014 |
| Tower RUM Limited | Wholesale & retail | 2023 |
| Town & City Limited | Real estate | 2005 |
| Town Nominees Limited | Extraterritorial | 2006 |
| Townfield NO 1 Limited | Extraterritorial | 2020 |