| THE Howe Green Educational Trust Limited | Education | 1987 |
| THE Meridian Partnership | | 1984 |
| THE Moorings (Mill Street) Limited | Households | 1997 |
| THE Pre-School at ST Joe's Ltd | Education | 2022 |
| THE Purple PIG Marketing Co Ltd | Professional & scientific | 2018 |
| THE Shed Coffee House Limited | Hospitality | 2010 |
| THE Stansted Taxi Company Limited | Transport & logistics | 2009 |
| THE Topsoil Company Limited | Water & waste | 2018 |
| THE VA Angels Ltd | Professional & scientific | 2022 |
| Thebootroom Ltd | Other services | 2024 |
| Thermal Breaks Limited | Manufacturing | 2014 |
| Thompson Orthopaedics Limited | Health & social care | 2017 |
| Three Lakes Properties Limited | Construction | 2018 |
| Three Oaks Development Limited | Construction | 2018 |
| Tisdalls Hair & Beauty Limited | Other services | 2013 |
| TLA Limited | Wholesale & retail | 1996 |
| Toensberg Limited | Transport & logistics | 2009 |
| Tonies UK Limited | Wholesale & retail | 2017 |
| Topcott Developments Limited | Construction | 2010 |
| Towerglen Limited | Real estate | 1999 |
| Town Barn Management Limited | Administrative & support | 2002 |
| Transport Compliance Solutions Trading AS TCS Ltd | Transport & logistics | 2009 |
| Treasure ME Kids Community Interest Ltd | Other services | 2026 |
| Trow Properties LLP | | 2022 |
| Trust Tees Limited | Professional & scientific | 2011 |
| Turner Site Holdings Ltd | Financial services | 2022 |
| Turner Site Services Ltd | Transport & logistics | 2018 |
| Turquoise Aviation Engineering Ltd | Transport & logistics | 2026 |
| Twyford House Management Company Limited | Real estate | 1996 |
| Twyford Mews Management Company Limited | Households | 1985 |
| TYE Green Services Limited | Agriculture & fishing | 2015 |
| UK Internet Services Limited | Information & communication | 2003 |
| Unique Construction Limited | Construction | 2010 |
| United Storage Systems Limited | Construction | 1989 |
| Ursidae Limited | Real estate | 1986 |
| Vida Pilates Studio Ltd | Arts & recreation | 2025 |
| Vigilare LLP | | 2023 |
| Villiers Furniture Limited | Manufacturing | 2002 |
| Vincent SA Ltd | Manufacturing | 2023 |
| Vishram Associates Limited | Financial services | 1997 |
| Vitae Reactive LLP | | 2015 |
| VSM Property Investments Limited | Real estate | 2019 |
| W Gent Builders Ltd | Construction | 2012 |
| Wall Glass Partitioning Limited | Construction | 2021 |
| Wallbedking Limited | Wholesale & retail | 2014 |
| Warby Holdings Limited | Real estate | 2025 |
| Watermill Homes (Stansted) Limited | Construction | 2018 |
| Watson Wines (Spirits) Limited | Wholesale & retail | 2025 |
| Wayne Samson Limited | Construction | 2012 |
| Wayside Enterprises Limited | Administrative & support | 2014 |
| WEBUYYOURHOMEIN7DAYS.COM LLP | | 2008 |
| WEE Ferlie Limited | Professional & scientific | 2009 |
| West END Homes Limited | Construction | 1990 |
| West London Living Limited | Information & communication | 2012 |
| Westfield Investment Holdings Limited | Financial services | 2020 |
| Weycat Limited | Real estate | 2005 |
| White Dress Films Limited | Information & communication | 2012 |
| Whitetrees Group Limited | Health & social care | 2025 |
| Willbar Construction Ltd | Construction | 2020 |
| Willow Isle Estates Ltd | Real estate | 2024 |
| Wilson Baker Limited | Administrative & support | 2009 |
| Wilton Lyndon Limited | Professional & scientific | 2010 |
| Woodredon Equestrian Centre Limited | Agriculture & fishing | 2002 |
| Woodward Air Services Ltd | Construction | 2018 |
| Worland (Developments) LLP | | 2008 |
| York House (Chelsea) Limited | Other services | 2017 |
| Youngmore GM Limited | Administrative & support | 2016 |
| Yourmoneynews Ltd | Administrative & support | 2019 |
| ZB Lettings Ltd | Real estate | 2018 |
| Zephmax Limited | Professional & scientific | 2012 |
| Zero Trace Asbestos Solutions Ltd | Water & waste | 2025 |
| Zeus Construction Projects Limited | Real estate | 2021 |
| ZOE DEE Health & Beauty (Bishops Stortford) Limited | Other services | 2011 |
| ZOO Hairdressers Limited | Other services | 2011 |