| THE GT Worxx Ltd | Wholesale & retail | 2021 |
| THE Lord Nelson (Burnham Market) Limited | Hospitality | 2010 |
| THE Mark Farnham Schools of TAE Kwon DO Limited | Arts & recreation | 2002 |
| THE Norfolk Childcare Company Ltd | Education | 2016 |
| THE Retro Retreat Ltd | Wholesale & retail | 2025 |
| THE Rickels Caravan and Camping Park Ltd | Hospitality | 2020 |
| Therisa M Innes Ltd | Hospitality | 2024 |
| Tillicoultry Quarries (EA) Limited | Mining & quarrying | 1986 |
| TJH Contracts Holdings Limited | Real estate | 2024 |
| Tony Scase News Service Limited | Real estate | 1961 |
| Torros Limited | Manufacturing | 2001 |
| Town and Country Law (Norfolk) Ltd | Professional & scientific | 2021 |
| TP 1 Limited | Water & waste | 2009 |
| TP 3 Limited | Real estate | 2009 |
| TP 7 Limited | Real estate | 2012 |
| TP 9 Limited | Water & waste | 2013 |
| TP Facilities Ltd | Energy | 2013 |
| Tqf&Co Limited | Information & communication | 2021 |
| TR Maintenance & Property Developers Ltd | Construction | 2020 |
| Train Xhale Limited | Information & communication | 2014 |
| Treerange Group Limited | Professional & scientific | 2017 |
| Treerange Properties Limited | Real estate | 2025 |
| TSP Contractors Ltd | Construction | 2004 |
| Tyneham Home and Hospitality Ltd | Wholesale & retail | 2024 |
| Tyneham Investments Limited | Real estate | 2022 |
| Tysdale Farm Management Company Ltd | Households | 2021 |
| Tythe Farm Limited | Agriculture & fishing | 1946 |
| Unique Property Norfolk Ltd | Construction | 2015 |
| Upper Wensum Environmental Cluster Group CIC | Agriculture & fishing | 2021 |
| Uroamc Ltd | Health & social care | 2026 |
| V & J Knitwear Limited | Wholesale & retail | 1985 |
| V1TWN Limited | Wholesale & retail | 2006 |
| Vale Farm Developments (Holdings) Limited | Real estate | 2016 |
| Vale Farm Developments Limited | Real estate | 2016 |
| Valeting Star Limited | Administrative & support | 2025 |
| Vanners International Ltd | Administrative & support | 2017 |
| VJ Haulage Ltd | Transport & logistics | 2019 |
| VM and Display Ltd | Administrative & support | 2013 |
| W.& P.Caley Limited | Agriculture & fishing | 1964 |
| W.J.F. Ross Holdings Limited | Financial services | 2024 |
| Wadham Dales Limited | Administrative & support | 1978 |
| Wales (Eastgate) Farms Limited | Agriculture & fishing | 1959 |
| Waltersons Limited | Wholesale & retail | 2014 |
| Warmetek Limited | Wholesale & retail | 2024 |
| Wasted Talent Europe Limited | Wholesale & retail | 2015 |
| WAX Enterprises Limited | Financial services | 2023 |
| WDG & SON Property Ltd | Real estate | 2019 |
| Webber Roofing Ltd | Construction | 2017 |
| Welch Margetson (1832) Ltd | Manufacturing | 2022 |
| Wesigns (UK) Ltd | Manufacturing | 2018 |
| West Dereham Plant Limited | Administrative & support | 1982 |
| West Lynn Community Sports & Social Club Ltd | Hospitality | 2005 |
| West Norfolk Glass Limited | Construction | 2003 |
| West Norfolk Lime Limited | Mining & quarrying | 2009 |
| West Walton Nursery School Ltd | Education | 2024 |
| Whyman Builders Ltd | Construction | 2024 |
| Winston Estates Limited | Real estate | 1999 |
| Wood Wizards Buildings Ltd | Manufacturing | 2021 |
| Wootton Marsh Farms Limited | Real estate | 1998 |
| World Events Ltd | Administrative & support | 2019 |
| Wseyewear Ltd | Wholesale & retail | 2020 |
| X R Decorating Ltd | Construction | 2022 |
| Xleat Ltd | Wholesale & retail | 2022 |
| Young Planet Enterprises Limited | Information & communication | 2013 |
| Yourequire Consulting Ltd | Information & communication | 2014 |
| Zero Energy Modular Limited | Construction | 2019 |
| Zigzag Electrical Services Ltd | Construction | 2025 |
| ZSJ Services Ltd | Other services | 2024 |