| TEZ Halls Ltd | Real estate | 2024 |
| TFM Invest Ltd | Transport & logistics | 2023 |
| Tfpc Ltd | Manufacturing | 2014 |
| Tgarvey& Sons Groundworks Limited | Construction | 2024 |
| Tgrp Ltd | Wholesale & retail | 2024 |
| TH Air Law Limited | Professional & scientific | 2021 |
| TH3 Property Group Ltd | Real estate | 2023 |
| THA Scent Plug Ltd | Manufacturing | 2025 |
| Thaker Wealth Ltd | Financial services | 2022 |
| Thakurs Logistics Limited | Transport & logistics | 2025 |
| Thamby Brothers Ltd | Real estate | 2020 |
| Thamesbridge Commercial Brokers Ltd | Financial services | 2026 |
| Tharu Capital Ltd | Financial services | 2024 |
| That IS Class CIC | Education | 2026 |
| That Management Consulting Limited | Professional & scientific | 2022 |
| That's Crafty! Limited | Wholesale & retail | 2019 |
| Thatcham Town Radio CIC | Information & communication | 2025 |
| Thawpoint Ltd | Professional & scientific | 2025 |
| THE Academy of Legal Access and Excellence CIC | Education | 2025 |
| THE Accountant EPD Limited | Professional & scientific | 2025 |
| THE Affluent Treasures Store Limited | Wholesale & retail | 2024 |
| THE Albion Bath Company Limited | Manufacturing | 2025 |
| THE Allocation Ltd | Arts & recreation | 2026 |
| THE Arboretum (Haverhill) Residents Management Company Limited | Households | 2023 |
| THE Arched Mill Ltd | Information & communication | 2025 |
| THE Archive Edit Ltd | Wholesale & retail | 2026 |
| THE Art Town Limited | Wholesale & retail | 2016 |
| THE Aviary (Bury ST Edmunds) Management Company Limited | Households | 2017 |
| THE Back Office Group Ltd | Information & communication | 2024 |
| THE Barking Peanut Ltd | Wholesale & retail | 2025 |
| THE Barn Butchery Limited | Wholesale & retail | 2020 |
| THE Beauty and Aesthetics Company Limited | Other services | 2023 |
| THE Beauty Boss - TBB Limited | Other services | 2020 |
| THE Berkshire Film Company Ltd | Information & communication | 2026 |
| THE Bias Media Ltd | Information & communication | 2026 |
| THE Birchwood Collection Limited | Wholesale & retail | 2025 |
| THE Black Lion (Long Melford) Limited | Hospitality | 2017 |
| THE Blackbirds Inn (Woodditton) Limited | Hospitality | 2017 |
| THE Bloom Circle CIC | Information & communication | 2025 |
| THE Blue Person Limited | Other services | 1995 |
| THE Blueprint Holdings Group Ltd | Professional & scientific | 2026 |
| THE Boogie Bear Brewery Limited | Wholesale & retail | 2024 |
| THE Boston Boyz Ltd | Wholesale & retail | 2026 |
| THE Bridge Project (London) C.I.C. | Education | 2025 |
| THE British Association for the Study of Headache | Health & social care | 1998 |
| THE Brotherhood Hall Management Company Limited | Real estate | 1990 |
| THE Bubble House Party Limited | Administrative & support | 2024 |
| THE Bury Language School Limited | Education | 1997 |
| THE Bury ST Edmunds Properties Ltd | Real estate | 2025 |
| THE Business of Sport (Retail) Limited | Wholesale & retail | 2026 |
| THE Cambridge Portfolio Limited | Arts & recreation | 1991 |
| THE Cambridgeshire Conservatory Company Limited | Construction | 2008 |
| THE Camera Store Limited | Professional & scientific | 2008 |
| THE Carpenters Arms (Great Wilbraham) Limited | Hospitality | 2022 |
| THE Cat NAP Company Ltd | Agriculture & fishing | 2021 |
| THE Cavandish Holdings Ltd | Financial services | 2024 |
| THE Centre (Bury ST Edmunds) Limited | Health & social care | 2009 |
| THE Chess Club Grappling Limited | Manufacturing | 2024 |
| THE Classic Reserve Limited | Transport & logistics | 1995 |
| THE Clean Plumber Limited | Construction | 2007 |
| THE Cleaning & Gardening Crew Limited | Administrative & support | 2013 |
| THE Clearing Crew Ltd | Water & waste | 2025 |
| THE Coffee Emporium Ltd | Wholesale & retail | 2022 |
| THE Complemental Lifestyle Company Limited | Arts & recreation | 2025 |
| THE Conflux Rivista Ltd | Manufacturing | 2020 |
| THE Contract Carpet Company Limited | Wholesale & retail | 2008 |
| THE Cornrow Ltd | Wholesale & retail | 2020 |
| THE Cosy Cabin Ltd | Wholesale & retail | 2013 |
| THE Cross Keys Redgrave Limited | Hospitality | 2022 |
| THE Crystal Pixie Ltd | Wholesale & retail | 2023 |
| THE Cultivarian Society CIC | Other services | 2025 |
| THE Curecraft Food Co Limited | Wholesale & retail | 2025 |
| THE Curious Cupboard Ltd | Wholesale & retail | 2026 |
| THE Curious Room Ltd | Arts & recreation | 2012 |
| THE Custom Caterer Limited | Hospitality | 2023 |
| THE Cybercloud AI Ltd | Information & communication | 2026 |
| THE Deda Services Ltd | Information & communication | 2025 |
| THE Deeprose Store Ltd | Wholesale & retail | 2024 |
| THE Designer Warehouse Ltd | Wholesale & retail | 2025 |
| THE Designers Studio Ltd | Arts & recreation | 2023 |
| THE Desire to Create Limited | Information & communication | 2021 |
| THE Devanna C.I.C. | Health & social care | 2025 |
| THE Digital Yogi Limited | Professional & scientific | 2018 |
| THE Disability Union CIC | Other services | 2020 |
| THE Discourse AI Limited | Wholesale & retail | 2025 |
| THE DMC Works Ltd | Professional & scientific | 2025 |
| THE Doctor Rosemary Ltd | Health & social care | 2024 |
| THE Dolphin Hotel Group Ltd | Hospitality | 2025 |
| THE Downhill Only Club | Other services | 2000 |
| THE Doxa Project Limited | Other services | 2012 |
| THE Duck Truck Holdings Limited | Hospitality | 2017 |
| THE Dugout Limited | Education | 2025 |
| THE E.S.D. Control Centre Limited | Wholesale & retail | 1990 |
| THE East Bergholt Property Company Limited | Real estate | 1936 |
| THE Ecosystem Studio Ltd | Professional & scientific | 2026 |
| THE Eight Bells (Saffron Walden) Limited | Hospitality | 2016 |
| THE Electricity Network Company Limited | Energy | 2005 |
| THE Elemental Apothecary Limited | Wholesale & retail | 2024 |
| THE Elmsett Mill (Management Company) Limited | Households | 2004 |
| THE Elysian Affairs Limited | Hospitality | 2025 |