| THE Suffolk Deli Ltd | Hospitality | 2024 |
| THE Suffolk Escape Ltd | Hospitality | 2012 |
| THE Suffolk Facilities Hub Ltd | Administrative & support | 2026 |
| THE Suffolk Fencing Company Ltd | Construction | 2023 |
| THE Suffolk Games Ltd | Arts & recreation | 2021 |
| THE Suffolk Land Rover Owners Club Limited | Arts & recreation | 1996 |
| THE Suffolk Loft Guys Ltd | Construction | 2025 |
| THE Suffolk Nest Ltd | Wholesale & retail | 2021 |
| THE Suffolk Painting Contractors Ltd | Construction | 2014 |
| THE Suffolk Steel House Ltd | Hospitality | 2017 |
| THE Suffolk Village Estates Company Limited | Real estate | 1985 |
| THE Suffolk Wedding Show Limited | Extraterritorial | 2013 |
| THE Swan Holbrook Limited | Hospitality | 2020 |
| THE Tackle Lounge Limited | Wholesale & retail | 2023 |
| THE Talent Bridge Agency Ltd | Administrative & support | 2024 |
| THE TAN Box Ltd | Other services | 2012 |
| THE Theatre Emporium Limited | Arts & recreation | 2014 |
| THE Thicket at Huntingfield Ltd | Hospitality | 2025 |
| THE Thorogood Project Ltd | Real estate | 2023 |
| THE Tidman Organisation Ltd | Other services | 2019 |
| THE Tiny Gold Company Ltd | Wholesale & retail | 2025 |
| THE TOM George Company Ltd | Professional & scientific | 2018 |
| THE Tourist Trail Limited | Financial services | 2011 |
| THE Training Academy Nationwide Limited | Professional & scientific | 2025 |
| THE Travel Firm Ltd | Administrative & support | 2026 |
| THE Tree GP Limited | Agriculture & fishing | 2014 |
| THE Tribute Vault Ltd | Information & communication | 2025 |
| THE Trim Shop (1960) Limited | Manufacturing | 2023 |
| THE Tudor Barn Belstead Limited | Other services | 2015 |
| THE UK Hose Group Limited | Administrative & support | 2023 |
| THE Unruly Dining Company Limited | Hospitality | 2024 |
| THE Upper Brook Street Flats Management Company Limited | Real estate | 2011 |
| THE Urban Stage Company Limited | Arts & recreation | 2023 |
| THE Vehicle Breakers Ltd | Wholesale & retail | 2015 |
| THE Venue at Kersey Mill Ltd | Hospitality | 2012 |
| THE Very Happy PUB Company Ltd | Hospitality | 2019 |
| THE Villon Ltd | Manufacturing | 2023 |
| THE Vincent Group Ltd | Real estate | 2015 |
| THE Warrens Management Company Limited | Households | 2006 |
| THE Waterfront Diner Limited | Hospitality | 2026 |
| THE Watership Down Nursery Ltd | Education | 2015 |
| THE Wedding Dj's Ltd | Arts & recreation | 2015 |
| THE Well and Mirror Ltd | Professional & scientific | 2022 |
| THE Wheaten Mill Limited | Administrative & support | 2008 |
| THE Wheel Centre (Ipswich) Ltd | Administrative & support | 2023 |
| THE Wild Rabbit Harkstead Limited | Hospitality | 2025 |
| THE Wildginger Group Ltd | Health & social care | 2016 |
| THE Will Shop and Probate Advisory Company Limited | Professional & scientific | 2022 |
| THE Will Shop Limited | Administrative & support | 2001 |
| THE Will Writing Shop Ltd | Professional & scientific | 2022 |
| THE Willows Daycare Ltd | Health & social care | 2006 |
| THE Window Cleaning Hub Ltd | Wholesale & retail | 2020 |
| THE Windscreen Company Limited | Wholesale & retail | 1998 |
| THE Wooden GEM Limited | Manufacturing | 2021 |
| THE Wright Bookkeeping Solutions Ltd | Professional & scientific | 2009 |
| Thealchemist Ltd | Manufacturing | 2023 |
| Thecareermaze Ltd | Other services | 2020 |
| Thecarplug Ltd | Wholesale & retail | 2025 |
| Thecuddlecompany Ltd | Manufacturing | 2016 |
| Thefountaingroup Limited | Hospitality | 2025 |
| Thegoodbrand Ltd | Education | 2019 |
| Thegreattides Limited | Hospitality | 2019 |
| Themesic Interactive Ltd | Information & communication | 2014 |
| Themoorevintage Ltd | Wholesale & retail | 2025 |
| Theo Transport Ltd | Transport & logistics | 2023 |
| Theo's Group Ltd. | Real estate | 2015 |
| Theodoron Ltd | Transport & logistics | 2020 |
| Theran Property Ltd | Real estate | 2021 |
| There's a Way Ltd | Extraterritorial | 2015 |
| Thermoframe Limited | Construction | 2025 |
| Thermoglaze UK Manufacturing Limited | Manufacturing | 2019 |
| Thermotech Plastics Ltd | Extraterritorial | 2021 |
| Thermotech Solutions Limited | Manufacturing | 2013 |
| Thermotech Tooling Ltd | Extraterritorial | 2021 |
| Thermotek Plastics Ltd | Extraterritorial | 2021 |
| Thermotek Tooling Ltd | Extraterritorial | 2021 |
| Thertk Ltd | Professional & scientific | 2012 |
| Thescoop! Enterprise Limited | Wholesale & retail | 2020 |
| Thesearch.Life C.I.C. | Information & communication | 2023 |
| Theveteran.Uk Limited | Information & communication | 2020 |
| Thewafflestop TCG Ltd | Wholesale & retail | 2025 |
| Thewebstore Limited | Wholesale & retail | 2013 |
| They Group Ltd | Wholesale & retail | 2016 |
| Third Rock Productions Limited | Health & social care | 2015 |
| Thivakar Jagan Limited | Administrative & support | 2019 |
| THL (UK) Holdings Ltd | Professional & scientific | 2003 |
| Thomas & Sebastian Limited | Transport & logistics | 2015 |
| Thomas Property Development Ltd | Real estate | 2021 |
| Thomas Robinson Bespoke Kitchens Ltd | Manufacturing | 2018 |
| Thomas Trades Group Ltd | Construction | 2025 |
| Thompson & Morgan (Group) Limited | Professional & scientific | 1993 |
| Thompson & Morgan Group Holdings Limited | Professional & scientific | 2002 |
| Thompson Corp Limited | Information & communication | 2019 |
| Thompson Financial Consulting Limited | Financial services | 2008 |
| Thompsons Estate Offices Limited | Real estate | 2000 |
| Thorington Park Residents Association Limited | Real estate | 2001 |
| Thorn Eica Limited | Professional & scientific | 2007 |
| Thornbush Energy Limited | Real estate | 2024 |
| Thorne & Wait Limited | Administrative & support | 2016 |
| Thorne Interiors Suffolk Ltd | Manufacturing | 2022 |