| THE Candle Grove Ltd | Manufacturing | 2024 |
| THE Castle PUB Colchester Ltd | Hospitality | 2017 |
| THE Chelsea Landscape Gardener Ltd | Administrative & support | 1990 |
| THE Clove Global Ltd | Wholesale & retail | 2025 |
| THE Commerce Team Ltd | Professional & scientific | 2021 |
| THE Coppice Woodsmen Ltd | Agriculture & fishing | 2026 |
| THE Create Space Collective Ltd | Health & social care | 2025 |
| THE Crown & Cushion (Northampton) Ltd | Hospitality | 2011 |
| THE Crown and Thistle (Great Chesterford) Ltd | Hospitality | 2015 |
| THE Crown Stowupland Ltd | Hospitality | 2026 |
| THE Dick White Charitable Foundation | Professional & scientific | 2009 |
| THE Dog Inn Halstead Ltd | Hospitality | 2005 |
| THE Exning Residence Ltd | Hospitality | 2023 |
| THE First Nuomics Limited | Professional & scientific | 2017 |
| THE Fit Butcher Limited | Hospitality | 2024 |
| THE Founders’ Table Ltd | Other services | 2024 |
| THE Foundry Architects Ltd | Professional & scientific | 2017 |
| THE Gallery (Newmarket) Limited | Hospitality | 2018 |
| THE Granary Estates Limited | Administrative & support | 2010 |
| THE Graze Kitchen Ltd | Hospitality | 2022 |
| THE Green MAN Shepreth Ltd | Hospitality | 2018 |
| THE Grosvenor Stud Ltd | Agriculture & fishing | 2025 |
| THE Hands-On Company: Puppetry & Drama Limited | Extraterritorial | 2012 |
| THE Haughley Arms Ltd | Hospitality | 2026 |
| THE Hemp Store Limited | Wholesale & retail | 1999 |
| THE Heritage Home Staging and Cleaning Company Ltd | Professional & scientific | 2023 |
| THE House of Muddy Paws Limited | Other services | 2019 |
| THE Ideas Centre Limited | Professional & scientific | 2011 |
| THE Injured Jockeys Fund | Health & social care | 2004 |
| THE Interiors Marketing Agency Limited | Wholesale & retail | 2014 |
| THE Isaacs Glass Company Limited | Construction | 1992 |
| THE Jamie Network Ltd | Information & communication | 2015 |
| THE Joshua Tree (Suffolk) Ltd | Administrative & support | 2020 |
| THE Kitchen Studio (Newmarket) Limited | Wholesale & retail | 2024 |
| THE Libra Scale Holdings Company Limited | Professional & scientific | 2016 |
| THE Lifestyle Clinic Limited | Extraterritorial | 1988 |
| THE Links Golf Club (Newmarket) Limited | Arts & recreation | 2021 |
| THE Little Beauty Box (U.K.) Ltd | Other services | 2015 |
| THE Littles Tavern Ltd | Hospitality | 2023 |
| THE Loddon Swan Limited | Hospitality | 2011 |
| THE Mayfair Residence (Cambridge) Ltd | Hospitality | 2020 |
| THE Natural Dog Treats Company (2021) Limited | Wholesale & retail | 2021 |
| THE New Astley Cafe Limited | Arts & recreation | 1995 |
| THE Newmarket Equine Hospital Limited | Professional & scientific | 2003 |
| THE Newmarket Operatic, Musical and Dramatic Society Ltd | Other services | 2006 |
| THE Newmarket Real Tennis Club Limited | Arts & recreation | 2010 |
| THE Norton Dog (Suffolk) Limited | Hospitality | 2023 |
| THE Open & Distance Learning Quality Council | Education | 1968 |
| THE Orange Shop Newmarket Ltd | Wholesale & retail | 2025 |
| THE Palace Gardener Limited | Extraterritorial | 2016 |
| THE Pantry Fine Foods Ltd | Hospitality | 2011 |
| THE Porter Collective Limited | Wholesale & retail | 2026 |
| THE Prettygate Lexden Limited | Hospitality | 2017 |
| THE Print Superstore Ltd | Administrative & support | 2016 |
| THE Racing Centre Ltd. | Arts & recreation | 2004 |
| THE Rainbird Partnership Limited | Professional & scientific | 2004 |
| THE Ratchet Shop Ltd | Wholesale & retail | 2016 |
| THE Real Country Houses Ltd | Hospitality | 2009 |
| THE Robert Kett Public House Ltd | Hospitality | 2019 |
| THE Sandwich Mill LLP | | 2008 |
| THE Shark Tank Newmarket Ltd | Arts & recreation | 2025 |
| THE SIX Mile Bottom Vineyard Limited | Agriculture & fishing | 2022 |
| THE Smile of Thailand Ltd | Professional & scientific | 2024 |
| THE Studio Box Ltd | Real estate | 2025 |
| THE Swan Needham Market Ltd | Hospitality | 2015 |
| THE Tanning Shop Newmarket Limited | Other services | 2017 |
| THE Thoroughbred Breeders' Association | Other services | 2009 |
| THE Voluntary Network | Health & social care | 2000 |
| THE Wavertree Education Trust Limited | Education | 2005 |
| THE Wedding Boutique Italy Limited | Other services | 2019 |
| THE West Africa Mill Company Limited | Manufacturing | 2014 |
| THE Westgate 2026 Ltd | Hospitality | 2026 |
| THE Wildlife Lounge Limited | Professional & scientific | 2024 |
| THE Wrights Building & Maintenance Company Ltd | Construction | 2019 |
| Theo Runham Car Sales Ltd | Wholesale & retail | 2025 |
| Thermal Industries Limited | Manufacturing | 1982 |
| Thespacehub Ltd | Arts & recreation | 2024 |
| Thingsity Ltd | Wholesale & retail | 2022 |
| Think Investments Limited | Professional & scientific | 2007 |
| Thomp Day Care Limited | Other services | 2024 |
| Thompson Acquisitions (London) Limited | Extraterritorial | 1998 |
| Thompson Asset Management Limited | Extraterritorial | 1988 |
| Thompson Investments (London) Limited | Professional & scientific | 1987 |
| Thomson Cladding Ltd | Construction | 2021 |
| Thorns Meadow Property Management Company Limited | Households | 2011 |
| Thoroughbed Shavings Limited | Agriculture & fishing | 2019 |
| Thoroughbred Wines Ltd | Wholesale & retail | 2024 |
| Thoroughbrew Ltd | Manufacturing | 2024 |
| Three Ashes Limited | Agriculture & fishing | 2011 |
| Threlfall Developments Limited | Real estate | 2002 |
| Thrill Seekers Hire Limited | Arts & recreation | 2009 |
| Thrown in the Trowel Limited | Administrative & support | 2017 |
| Thurso Limited | Agriculture & fishing | 2005 |
| TI Ltd | Extraterritorial | 2008 |
| Tile Elegance Limited | Construction | 2020 |
| TIM Gredley Investments Limited | Agriculture & fishing | 2015 |
| Time 2 Care (BSE) Ltd | Health & social care | 2010 |
| Time to Dream Ltd | Other services | 2026 |
| Tinajo Services Ltd | Other services | 2016 |
| Tiny Wonders UK Tech Ltd | Wholesale & retail | 2025 |