| Talbert Living Care Investments Limited | Health & social care | 2019 |
| Talbot Components Ltd | Wholesale & retail | 2013 |
| Talbot Properties (Lincoln) Limited | Real estate | 2019 |
| Talbot Property Management Limited | Households | 2001 |
| Talbot Street Phase II Limited | Real estate | 2024 |
| Talbot Street Property Co Limited | Real estate | 2017 |
| Tale Production Limited | Information & communication | 2018 |
| Talent Cove Recruitment Limited | Administrative & support | 2024 |
| Talent Gold Community Interest Company | Education | 2025 |
| Talentbridge Management Ltd | Professional & scientific | 2023 |
| Talentgrid Recruitment Ltd | Administrative & support | 2026 |
| Talenthive Recruitment Ltd | Administrative & support | 2025 |
| Talisman Auctions Limited | Professional & scientific | 2002 |
| Talisman Autos Service Limited | Wholesale & retail | 2018 |
| Talisman Railwayana Auctions Limited | Professional & scientific | 2002 |
| Talitha Media Limited | Professional & scientific | 2025 |
| Talk Talent Ltd | Administrative & support | 2009 |
| Talkbeyond Ltd | Information & communication | 2026 |
| Talking OX Ltd | Information & communication | 2021 |
| Talking Solutions Nottingham Ltd | Education | 2019 |
| Talkins Construction Ltd | Construction | 2022 |
| Talktoai Ltd | Information & communication | 2024 |
| Talkwith Ltd | Health & social care | 2020 |
| Talland Capital Ltd | Construction | 2020 |
| Tallboy Designs Limited | Manufacturing | 2020 |
| Tallboy INK Limited | Manufacturing | 2020 |
| Tallulatattoo Ltd | Arts & recreation | 2023 |
| Tally UP Bookkeeping Ltd | Professional & scientific | 2025 |
| Talon Electrical Services Limited | Construction | 2025 |
| Talon Enterprises Limited | Wholesale & retail | 2017 |
| Talostex Ltd | Manufacturing | 2024 |
| Talton Capital & Consulting Ltd | Financial services | 2025 |
| Talvi Limited | Information & communication | 2025 |
| Tamara Associates Ltd. | Administrative & support | 2020 |
| Tamarind Engineering Ltd | Professional & scientific | 2018 |
| Tambinis Limited | Manufacturing | 2019 |
| Tamed Administration Services Limited | Administrative & support | 2019 |
| Tamiyaclub Limited | Wholesale & retail | 2026 |
| Tamizh Culture Limited | Wholesale & retail | 2025 |
| Tamizh Thinnai C.I.C. | Health & social care | 2022 |
| Tammy's Ltd | Hospitality | 2023 |
| Tams Real Estate Ltd | Real estate | 2025 |
| Tamsin Wheatcroft Limited | Administrative & support | 2016 |
| Tamsin Wilson Ltd | Professional & scientific | 2014 |
| Tamworth V.E. Limited | Other services | 1995 |
| TAN Delicious DIM SUM Ltd | Hospitality | 2025 |
| TAN SO Nice Restaurant & Lounge Ltd | Hospitality | 2026 |
| TANAKA09 Limited | Health & social care | 2019 |
| Tandel Limited | Hospitality | 2024 |
| Tanden Ltd | Health & social care | 2026 |
| Tandsheatingandplumbing Ltd | Construction | 2016 |
| Tandsplumbing Ltd | Construction | 2016 |
| Tandsplumbingandheating Ltd | Construction | 2016 |
| Tandya Properties Ltd | Households | 2024 |
| Tangerang Ltd | Wholesale & retail | 2008 |
| Tanglewood Huntingdon Limited | Real estate | 2020 |
| Tangor Limited | Wholesale & retail | 2020 |
| Tangs Arnold Ltd | Hospitality | 2026 |
| Tangsnottingham Ltd | Hospitality | 2024 |
| Tani Shop KH Ltd | Wholesale & retail | 2020 |
| Tanisau Limited | Professional & scientific | 2024 |
| Taniyang Solutions Ltd | Information & communication | 2022 |
| Tanj Ltd | Hospitality | 2024 |
| Tank Enterprise Ltd | Transport & logistics | 2026 |
| Tank Farm Services Limited | Manufacturing | 1995 |
| Tank PR Limited | Professional & scientific | 2009 |
| Tanlee Consulting Ltd | Information & communication | 2024 |
| Tanlee Ltd | Financial services | 2021 |
| Tanners Court (2005 Management) Limited | Households | 2005 |
| Tanning Room (Bingham) Limited | Other services | 2019 |
| Tans Logistics Ltd | Transport & logistics | 2025 |
| Tansley Digital Ltd | Information & communication | 2017 |
| Tantan Consultancy Service Ltd | Professional & scientific | 2022 |
| Tanya's Flawless Hair and Beauty Academy Ltd | Other services | 2024 |
| Tanyaradzwa Limited | Health & social care | 2016 |
| TAO & Friends Limited | Wholesale & retail | 2015 |
| TAP and Tile Limited | Construction | 1999 |
| Tapad UK Limited | Information & communication | 2014 |
| TAPAS@NO2 Ltd | Hospitality | 2023 |
| Tapedrive Limited | Wholesale & retail | 1994 |
| Tapestry Learning Partnership | Education | 2002 |
| Taphouse Holdings Ltd | Hospitality | 2023 |
| Tapreviews Ltd | Wholesale & retail | 2023 |
| Taps 2 Go Limited | Wholesale & retail | 2016 |
| TAQ Ltd | Real estate | 2021 |
| Taqwa Cuisine Ltd | Hospitality | 2024 |
| Tara and Tara Limited | Real estate | 2018 |
| Tara LYN Promotions Ltd | Wholesale & retail | 2022 |
| Tara PMU Limited | Other services | 2021 |
| Tarak Ltd | Professional & scientific | 2026 |
| Taran Estates Limited | Households | 2023 |
| Tarar Properties Limited | Construction | 2025 |
| Taraz Metrology Ltd | Manufacturing | 2018 |
| Tarbus Ltd | Manufacturing | 2016 |
| Target Food Stores Ltd | Wholesale & retail | 2022 |
| Target Foods Store Ltd | Wholesale & retail | 2026 |
| Target HR Delivery Limited | Administrative & support | 2013 |
| Tarida Holdings Ltd | Financial services | 2022 |
| Tarkaben Ltd | Real estate | 2018 |
| Tarkwa Futures Limited | Financial services | 2021 |