| Tamarind Tales Limited | Hospitality | 2025 |
| Tamjid Spice Ltd | Hospitality | 2026 |
| Tamlin BEA LP | | 2023 |
| Tammy Social Care Services Ltd | Health & social care | 2024 |
| Tampa Ltd | Information & communication | 2010 |
| TAN and Go Ltd | Other services | 2026 |
| TAN Theory Limited | Other services | 2025 |
| Tanbold Limited | Administrative & support | 2026 |
| Tane Wroxham Ltd | Wholesale & retail | 2023 |
| Tangent Professional Services Ltd | Other services | 2018 |
| Tangerine Confectionery Group Limited | Financial services | 2005 |
| Tangerine Software Limited | Information & communication | 2012 |
| Tangible Growth Ltd | Administrative & support | 2025 |
| Tanhar Restaurant Ltd | Hospitality | 2022 |
| Taniwha Ltd | Real estate | 2022 |
| Tanka Convenience Store Ltd | Wholesale & retail | 2021 |
| Tannenbay Pembrooke Investments Ltd | Professional & scientific | 2018 |
| Tanner House Barn Ltd | Real estate | 2020 |
| Tansurg Specialists Ltd | Health & social care | 2025 |
| Tant Consultancy Ltd | Administrative & support | 2011 |
| Tanviskr Limited | Health & social care | 2018 |
| Tanya Allenby Films Ltd | Wholesale & retail | 2017 |
| TAO Cleaning Ltd | Administrative & support | 2019 |
| Taoe Ltd | Professional & scientific | 2020 |
| TAP and Flash Ltd | Professional & scientific | 2018 |
| TAP N Go Ltd | Construction | 2025 |
| TAP Routes Ltd | Arts & recreation | 2018 |
| TAP to WIN Competitions Ltd | Wholesale & retail | 2024 |
| Taply Limited | Professional & scientific | 2026 |
| Taproom Taverns Ltd | Hospitality | 2021 |
| Taranis Installations Ltd | Construction | 2014 |
| Tarantula a Ltd | Arts & recreation | 2021 |
| Tarawali Strategy & Capital Ltd | Financial services | 2025 |
| Tarc Care Ltd | Health & social care | 2024 |
| Target Cloud Consulting Ltd | Information & communication | 2014 |
| Target Profila Limited | Information & communication | 2017 |
| Target Storage Services Limited | Arts & recreation | 2005 |
| Targetfollow (Development) Limited | Financial services | 2007 |
| Targetfollow (Pantiles) Limited | Real estate | 2007 |
| Targetfollow Estates Limited | Real estate | 1992 |
| Targetfollow Group Limited | Financial services | 2006 |
| Targetmid Property Management Limited | Households | 1988 |
| Tariano Limited | Health & social care | 2017 |
| Tariq & Sons Limited | Hospitality | 2024 |
| Tarlyovski Ltd | Other services | 2017 |
| Tarn Developments Ltd | Construction | 2015 |
| Tarnock Expertise Ltd | Administrative & support | 2015 |
| Taro Investments Ltd | Real estate | 2023 |
| Tarobertson Ltd | Households | 2022 |
| Tarracota Ltd | Hospitality | 2018 |
| Tartan Deer Limited | Hospitality | 2016 |
| Tarvis Havenly Limited | Wholesale & retail | 2026 |
| TAS Services Limited | | 1989 |
| TAS Valley Contracting Limited | Professional & scientific | 2016 |
| TAS Valley Fire (UK) Ltd | Professional & scientific | 2011 |
| TAS Valley Holidays Limited | Hospitality | 2014 |
| Tasburgh Sports and Social Club CIC | Arts & recreation | 2012 |
| Tasburgh Ventures Ltd | Professional & scientific | 2023 |
| Tasha's Hair & Beauty Ltd | Other services | 2021 |
| Tashon Ltd | Health & social care | 2009 |
| Tasmay Limited | Hospitality | 2025 |
| Taspinar Norwich Ltd | Hospitality | 2024 |
| Tassie & SON Ltd | Construction | 2019 |
| Tassie Holdings Ltd | Financial services | 2024 |
| Taste Norwich Limited | Hospitality | 2025 |
| Tastebuds Collective Limited | Other services | 2024 |
| Tasty Chicken&Pizza Swindon Ltd | Hospitality | 2022 |
| Tasty House Norwich Limited | Hospitality | 2017 |
| Tasty Mobile Food Ltd | Hospitality | 2025 |
| Tasty Slice Ltd | Hospitality | 2025 |
| Tattoo Hub Ltd | Other services | 2019 |
| Tattoo's by Fluff Ltd | Arts & recreation | 2019 |
| Tattooed Tycoon Ltd | Other services | 2019 |
| Tatum Reid Photography Limited | Professional & scientific | 2016 |
| TAU Care Limited | Health & social care | 2018 |
| Taubman Management Services Limited | Professional & scientific | 2002 |
| Taurus 3 Limited | Financial services | 2011 |
| Taurus Bidco Limited | Financial services | 2011 |
| Taurus Business Centre Limited | Real estate | 2005 |
| Taurus Monitoring Limited | Professional & scientific | 2011 |
| Taurus Promotions Ltd | Arts & recreation | 2025 |
| Taverham Barbershop Ltd | Other services | 2026 |
| Taverham Conservatories Ltd | Construction | 2024 |
| Taverham Dental Health Clinic Limited | Health & social care | 2012 |
| Taverham Landscapes Ltd | Administrative & support | 2021 |
| Taverham Tea Rooms Limited | Hospitality | 2024 |
| Taverham Transporters Limited | Wholesale & retail | 1977 |
| Tavis Walker Ltd | Real estate | 2014 |
| Tax Digital Group Limited | Professional & scientific | 2026 |
| TAX24 Ltd | Professional & scientific | 2025 |
| Taxassist (South Norfolk) Limited | Professional & scientific | 2024 |
| Taxassist Accountants (HAM) Limited | Professional & scientific | 2023 |
| Taxassist Accountants Limited | Professional & scientific | 2005 |
| Taxassist Direct Financial Services Limited | Professional & scientific | 2020 |
| Taxassist Direct Limited | Administrative & support | 1995 |
| Taxassist Direct USA Ltd | Administrative & support | 2011 |
| Taxassist Group Services Limited | Administrative & support | 2015 |
| Taxassist International Limited | Administrative & support | 2011 |
| Taxassist Practices Limited | Financial services | 2023 |
| Taxassist Tax Consulting Limited | Professional & scientific | 2022 |