| THE Academy Housing Hub Limited | Real estate | 2024 |
| THE Anti-Fragility Academy Limited | Extraterritorial | 2012 |
| THE Bay Therapy Centre Limited | Other services | 2010 |
| THE Brow Beauty Studio Limited | Other services | 2023 |
| THE Diocese of Southwell and Nottingham Educational Trust | Education | 2011 |
| THE Full Moon at Morton LLP | | 2007 |
| THE Gate to Southwell Folk Festival Limited | Arts & recreation | 2007 |
| THE Grey One Ltd. | Information & communication | 2016 |
| THE Gym @ NG25 Ltd | Arts & recreation | 2023 |
| THE Marketing Hothouse Limited | Administrative & support | 2008 |
| THE Morton Arms (Wallasey) Limited | Real estate | 2013 |
| THE Mower Shop Limited | Wholesale & retail | 1997 |
| THE Old Theatre Deli LLP | | 2025 |
| THE Old Threshing Barn Ltd | Hospitality | 2023 |
| THE Southwell Bubble Wrap Ltd | Education | 2015 |
| Thomas Beckett Trailers Ltd | Manufacturing | 2014 |
| Thorpe Management Co (UK) Limited | Hospitality | 2009 |
| Thrive Mobility Limited | Wholesale & retail | 2022 |
| Timcon Development Co.Limited | Extraterritorial | 1964 |
| Tomlinson IT Ltd | Wholesale & retail | 2016 |
| Tony Hill Motor Engineers Ltd | Wholesale & retail | 2013 |
| Tozer Studios Limited | Arts & recreation | 2003 |
| Tree Cake Ltd | Manufacturing | 2023 |
| Trent Pro Ltd | Administrative & support | 2025 |
| Trent Valley Equestrian LLP | | 2015 |
| Treswell Consulting Ltd | Information & communication | 2022 |
| Troon & Co Parts Limited | Wholesale & retail | 2020 |
| Tropicana TAN (Grantham) Limited | Administrative & support | 2003 |
| UK Gold Merchants Ltd | Wholesale & retail | 2024 |
| UK Maxima Ltd | Wholesale & retail | 2024 |
| Uniquehr Limited | Professional & scientific | 2009 |
| Vicarage Boutique Hotel Ltd | Hospitality | 2010 |
| Victre Limited | Construction | 2015 |
| Vincent Jacobs Construction Limited | Construction | 2025 |
| Violet Rose Southwell Ltd | Wholesale & retail | 2021 |
| W Newbold & Sons Limited | Real estate | 1942 |
| W.W.Wood Limited | Real estate | 1931 |
| Wall Street Holdings Limited | Real estate | 2023 |
| Wallace Electrical Distributors (Skegness) Limited | Wholesale & retail | 1991 |
| Walter Harman Properties Limited | Real estate | 2007 |
| Wandless Property Limited | Real estate | 2019 |
| Webbsmart Ltd | Transport & logistics | 2021 |
| Webster IT Limited | Information & communication | 2011 |
| Westgate (Midlands) Limited | Construction | 2011 |
| Westgate Partnership Shopfitting Services Limited | Manufacturing | 2001 |
| Westhorpe Hall Southwell Management Limited | Households | 1986 |
| Whitefold Ashdale Limited | Financial services | 2023 |
| Whitehead & Partners Ltd | Construction | 2019 |
| Whites Trading Ltd | Hospitality | 2013 |
| Wild Thyme Limited | Hospitality | 2025 |
| Willoughby Financial Services Ltd | Professional & scientific | 2024 |
| Willoughby House Management Co Limited | Real estate | 2023 |
| Woodside Farming Limited | Agriculture & fishing | 2011 |
| Woodthorpe Flooring Limited | Construction | 2006 |
| WPS Plastering Contractors Ltd | Construction | 2013 |
| Xing Fish Chips Ltd | Hospitality | 2019 |
| Yearkey Limited | Extraterritorial | 1989 |
| Yenton Building Company Limited | Extraterritorial | 1966 |
| Yenton Minster Homes Limited | Extraterritorial | 1990 |
| Yewscor Limited | Extraterritorial | 1960 |
| Zeroute Ltd | Information & communication | 2024 |
| Üsvalo Limited | Wholesale & retail | 2026 |