| THE Good Fight Tattoo Limited | Other services | 2018 |
| THE Great House Rolling Cellar Ltd | Hospitality | 2025 |
| THE Green Garden Room Limited | Administrative & support | 2007 |
| THE Grove Cottages Ltd | Hospitality | 2003 |
| THE Hair Studio Sudbury Ltd | Other services | 2022 |
| THE Hamlet of Halesend Management Company Limited | Professional & scientific | 2004 |
| THE Happy Catszzz Limited | Real estate | 2021 |
| THE House of Flying Horses Ltd | Arts & recreation | 2007 |
| THE HOW Development 2 Management Company Limited | Real estate | 2025 |
| THE Inclusive Kitchen CIC | Education | 2026 |
| THE Kitchen Showroom Limited | Wholesale & retail | 1989 |
| THE Landy Bar Ltd | Wholesale & retail | 2023 |
| THE Lavenham Greyhound Ltd | Hospitality | 2023 |
| THE Layzell Bures Charity | Administrative & support | 2008 |
| THE Lime Place Suffolk Ltd | Wholesale & retail | 2024 |
| THE LIN Berwick Trust | Other services | 2000 |
| THE Lodge Corby Management Company Limited | Households | 2017 |
| THE LPA Business Limited | Administrative & support | 2018 |
| THE Malthouse (Horninglow) Management Company Limited | Households | 2006 |
| THE Maltings (Newmarket) Management Company Limited | Households | 2015 |
| THE Master Herbalist Limited | Wholesale & retail | 2010 |
| THE Mindfulness Retreat Ltd | Education | 2016 |
| THE Nice Computer MAN Limited | Other services | 2008 |
| THE NO 8 Selection Limited | Manufacturing | 2025 |
| THE Norton Property Group Limited | Real estate | 2020 |
| THE Number 1 HR Consultancy Ltd | Administrative & support | 2013 |
| THE Old English Sauce Company Limited | Manufacturing | 2020 |
| THE Old Half Moon & Star Management Company Limited | Administrative & support | 1999 |
| THE Only Way IS Risl Limited | Construction | 2025 |
| THE Otten Red Lion Ltd | Hospitality | 2019 |
| THE Paddocks Properties Limited | Construction | 2018 |
| THE Phoenix Lift Consultants Ltd | Professional & scientific | 2024 |
| THE Potter Electrical Group Limited | Construction | 2021 |
| THE Quay Theatre at Sudbury | Arts & recreation | 2003 |
| THE Roaming Sauna Ltd | Other services | 2025 |
| THE Rose Forge Limited | Information & communication | 2025 |
| THE Seabrooks Management Co. Ltd | Real estate | 2008 |
| THE Seal Extrusion Company Limited | Administrative & support | 2017 |
| THE Spencers Farm Shop Limited | Wholesale & retail | 2021 |
| THE Stair Climbing Company Ltd | Administrative & support | 2014 |
| THE Stone Yard Pantry Ltd | Hospitality | 2019 |
| THE Stour Valley Hackney Carriage and Omnibus Company Ltd | Transport & logistics | 2026 |
| THE Strand at Clare Ltd | Other services | 2024 |
| THE Sudbury EGG and Poultry Market Limited | Real estate | 1940 |
| THE Suffolk Canine Club Ltd | Administrative & support | 2025 |
| THE Suffolk Distillery Limited | Manufacturing | 2016 |
| THE Suffolk Spice Company Ltd | Manufacturing | 2015 |
| THE Tannery (Titchfield) Management Company Limited | Households | 2018 |
| THE Travel Cabin Ltd | Administrative & support | 2025 |
| THE TUB Company Europe Limited | Wholesale & retail | 2007 |
| THE Unity Croquet Club (Sudbury) Ltd | Arts & recreation | 2021 |
| THE Urban Forest Consultancy Ltd | Professional & scientific | 2009 |
| THE Very Small PUB Company Ltd | Hospitality | 2006 |
| THE Veteran Film Rights Company Limited | Information & communication | 2016 |
| THE Wandering TAP Ltd | Wholesale & retail | 2025 |
| THE Wash Fellas Ltd | Administrative & support | 2025 |
| THE Wicked Coffee Company Limited | Wholesale & retail | 2023 |
| THE WIG Studio LG Ltd | Other services | 2024 |
| THE Wood Academy Ltd | Manufacturing | 2026 |
| Thelongdrop Limited | Information & communication | 2012 |
| Themisyu Limited | Information & communication | 2012 |
| Thepublandlord Ltd | Hospitality | 2025 |
| Thermalair Limited | Construction | 1982 |
| Thermofast Print Limited | Manufacturing | 2004 |
| Thestewardship Limited | Administrative & support | 2018 |
| Thinking at Work Limited | Professional & scientific | 2012 |
| Thisisempathy Community Interest Company | Health & social care | 2025 |
| Thornley Perrins Ltd | Real estate | 2024 |
| Thrust Holdings Ltd | Financial services | 2026 |
| Thurayoga Ltd | Wholesale & retail | 2022 |
| Tidy Mind Limited | Professional & scientific | 2014 |
| Tilbrook Construction Limited | Construction | 2006 |
| TIM Coxon & Co Limited | Professional & scientific | 2015 |
| TIM Richardson Farms Limited | Agriculture & fishing | 2014 |
| Timberscape Tree Care Ltd | Agriculture & fishing | 2024 |
| Timeshare Resales Holdings Limited | Financial services | 2007 |
| Timeshare Resales International Limited | Real estate | 1998 |
| Timestrip UK Limited | Administrative & support | 2000 |
| Timothy Little Ltd | Construction | 2020 |
| Tim’S MAN and Mini Digger for Hire Construction Ltd | Construction | 2020 |
| Tinamac Ltd | Health & social care | 2024 |
| Tiny Tiptoes Ltd | Arts & recreation | 2026 |
| TM Survey & Build Ltd | Professional & scientific | 2021 |
| TMT Tiling Limited | Construction | 2013 |
| Todds Removals Ltd | Transport & logistics | 1998 |
| Tolchard Property Management Ltd | Real estate | 2022 |
| Tolman Holdings LLP | | 2025 |
| TOM Walton Limited | Real estate | 2018 |
| Tom's Transport Solution Ltd | Transport & logistics | 2021 |
| Toms Live Service Ltd | Wholesale & retail | 2017 |
| Tonkotsu Limited | Manufacturing | 2012 |
| Tony Donnellan Properties Ltd | Real estate | 2023 |
| Tony Donnellan Roofing & General Builders Limited | Construction | 2009 |
| Tony Tassell Limited | Professional & scientific | 2013 |
| Top Marques Uniform Solutions Limited | Administrative & support | 2003 |
| Topgiraffe Ltd | Professional & scientific | 2017 |
| Tornado Film Ltd | Information & communication | 2023 |
| Torque Bikes Ltd | Manufacturing | 2018 |
| Tostock (Norton Road) Management Company Limited | Households | 2017 |
| Total Impact Group Ltd | Financial services | 2026 |