| Townsfolk Limited | Real estate | 1995 |
| TR Construction and Landscaping Ltd | Construction | 2022 |
| TR Lettings Ltd | Real estate | 2019 |
| TR Workforce Solutions Ltd | Administrative & support | 2024 |
| Tracss Management Consultants Limited | Information & communication | 2007 |
| Trade Team Global Ltd | Other services | 2020 |
| Trading Card Game Sales Ltd | Wholesale & retail | 2023 |
| Trading Floor Online Ltd | Information & communication | 2022 |
| Tranpro Ltd | Transport & logistics | 2021 |
| Trans VM Limited | Transport & logistics | 2025 |
| Transition Coaching Solutions Ltd | Professional & scientific | 2018 |
| Translucidus Ltd | Administrative & support | 2015 |
| Tranztopia Transport Ltd | Transport & logistics | 2026 |
| Traptime Limited | Wholesale & retail | 2025 |
| Traverse Framework Ltd | Information & communication | 2025 |
| Trawe Holdings Ltd | Real estate | 2025 |
| Treatu Ltd | Information & communication | 2024 |
| Trent Park Museum Trading Ltd | Wholesale & retail | 2025 |
| Treowen Ltd | Financial services | 2024 |
| Tri-Anglia Home Designs Limited | Wholesale & retail | 2009 |
| Trident Norwich Limited | Real estate | 2016 |
| Trilink Engineering Ltd | Professional & scientific | 1997 |
| Trinity 99 Limited | Health & social care | 2023 |
| Trinity Lane Broker Management Limited | Extraterritorial | 2012 |
| Triple Seven Consultancy Limited | Administrative & support | 2023 |
| TRN Bookkeeping Ltd | Professional & scientific | 2021 |
| Truestone Property Holdings Ltd | Real estate | 2026 |
| Truestone Property Ltd | Real estate | 2026 |
| Trundley Properties Limited | Construction | 2015 |
| Trusted Property Maintenance Ltd | Administrative & support | 2021 |
| Trusted Travel Norfolk Limited | Transport & logistics | 2025 |
| TST Property Renovation Ltd | Construction | 2020 |
| TT Equine Enterprises Ltd | Arts & recreation | 2024 |
| TT Sports Horses Limited | Arts & recreation | 2015 |
| Turandot Properties Limited | Hospitality | 2019 |
| Turner & RAE Limited | Manufacturing | 2025 |
| Turner Brickwork Ltd | Construction | 2025 |
| Turnpike Court Residents Management Limited | Households | 1992 |
| Turo Technology LLP | | 2002 |
| Tutopia Limited | Administrative & support | 2013 |
| Tutorplace Limited | Households | 1986 |
| Twelve 19 Limited | Real estate | 2024 |
| Twenty a Ltd | Information & communication | 2023 |
| Twisted & Loaded Ltd | Arts & recreation | 2020 |
| Two Willows Limited | Health & social care | 2024 |
| Tydd Steam Brewery Limited | Manufacturing | 2014 |
| Tyneham International Limited | Wholesale & retail | 2022 |
| Tyneham Luxury Products Ltd | Wholesale & retail | 2018 |
| Ubimach Limited | Construction | 2026 |
| UK Bivol Construction Ltd | Construction | 2022 |
| UK Permit & Pilot Car Services Limited | Transport & logistics | 2010 |
| UK Timber & Plywood Ltd | Wholesale & retail | 2011 |
| Ukdeadlock Ltd | Arts & recreation | 2019 |
| Ultimate Greenscape Management Limited | Wholesale & retail | 2015 |
| Ultimate Workstation Limited | Administrative & support | 2012 |
| Ultra Angling Ltd | Wholesale & retail | 2025 |
| Ultra Engineering Services Ltd | Manufacturing | 2026 |
| Uniq Developments Limited | Construction | 2005 |
| Unique Electrical Solutions Limited | Energy | 2016 |
| Unique Estates Norfolk Ltd | Real estate | 2020 |
| Unique Health Solutions Ltd | Professional & scientific | 2012 |
| United Kingdom Function Point User Group Limited | Information & communication | 1993 |
| United Painters Limited | Construction | 2009 |
| Uniwale Ltd | Wholesale & retail | 2025 |
| Unlabel Limited | Manufacturing | 2020 |
| Upcher Court Residents Association Limited | Households | 1978 |
| Uptech Limited | Information & communication | 2000 |
| Urban Glow Ltd | Wholesale & retail | 2026 |
| Urbo Decor Ltd | Construction | 2025 |
| Urostar Limited | Health & social care | 2017 |
| USED4U Limited | Wholesale & retail | 2012 |
| Utility Research Services Ltd | Information & communication | 2012 |
| Utility Savings Corporation (USC) Ltd. | Energy | 2001 |
| Utopia Wymondham Limited | Other services | 2023 |
| Uvagold Limited | Professional & scientific | 1996 |
| V & I Care Limited | Health & social care | 2021 |
| V a Building Ltd | Administrative & support | 2021 |
| V Speed Logistics Limited | Transport & logistics | 2025 |
| V Williamson Construction Limited | Construction | 2004 |
| V.Nor Ltd | Transport & logistics | 2025 |
| V1 Logistics Ltd | Transport & logistics | 2021 |
| V9 Signs Ltd | Manufacturing | 2018 |
| Vajra Arts Limited | Other services | 2016 |
| Valebream Property Limited | Professional & scientific | 1987 |
| Valence Consulting Limited | Professional & scientific | 2010 |
| Valentine Court Management Company (Hunstanton) Limited | Real estate | 1992 |
| Valued Contracting Ltd | Construction | 2025 |
| Vandyke Construction Services Limited | Construction | 2024 |
| Vanguard World Trade Limited | Wholesale & retail | 2026 |
| Vantira Holdings Limited | Professional & scientific | 2025 |
| Varak Limited | Construction | 2024 |
| Varsity Biologistics Ltd. | Professional & scientific | 2012 |
| Vasos Ltd | Health & social care | 2025 |
| Vaughan House Limited | Professional & scientific | 2004 |
| Vectra Distribution Ltd | Wholesale & retail | 2026 |
| Veejay Seven Limited | Real estate | 2017 |
| Vegas Fish Bar Ltd | Hospitality | 2008 |
| Velar Care Ltd | Health & social care | 2025 |
| Venni Wild Service Limited | Professional & scientific | 2022 |
| Verdoes Lettings Limited | Real estate | 2018 |