| Tectoverdi Limited | Information & communication | 2005 |
| TEG Waste Management Ltd | Water & waste | 2019 |
| Tempesthay Ltd | Professional & scientific | 2020 |
| Tende Limited | Manufacturing | 2003 |
| Tente Atlantic Company Ltd | Wholesale & retail | 2024 |
| Terry Abrams Limited | Wholesale & retail | 2017 |
| TG Convenience Stores Limited | Wholesale & retail | 2017 |
| Thames Leasing Ltd | Administrative & support | 2012 |
| That Sports Comp Ltd | Arts & recreation | 2026 |
| That's Sooo YOU Limited | Wholesale & retail | 2023 |
| Thaxted Festival Foundation | Arts & recreation | 1987 |
| Thaxted Laundry Room Limited | Other services | 2015 |
| Thaxted Stoves Limited | Construction | 2007 |
| THE 24X7 Special Needs Holiday Trust | Administrative & support | 2010 |
| THE Abbey Art Centre Limited | Real estate | 2020 |
| THE Active Spring Company Limited | Manufacturing | 1981 |
| THE Arts Centre (Dunmow) C.I.C. | Arts & recreation | 2007 |
| THE Big Olive Nail Company Ltd | Other services | 2024 |
| THE Black Lion (Kilburn) Limited | Hospitality | 2022 |
| THE Body-Fit Bootcamp Limited | Arts & recreation | 2016 |
| THE Broadway (Ealing) Limited | Construction | 2021 |
| THE Care Professionals (Essex) Limited | Health & social care | 2022 |
| THE Chewcrewverse Ltd | Information & communication | 2025 |
| THE Chopper Dawgs Ltd | Transport & logistics | 2022 |
| THE Compliant Chef Ltd | Professional & scientific | 2026 |
| THE Custom Concepts Company Ltd | Manufacturing | 2024 |
| THE Dunmow Foot Clinic Ltd | Health & social care | 2022 |
| THE English Cream Tea Company Limited | Manufacturing | 2011 |
| THE Essex Animal Physiotherapy Centre Limited | Other services | 2020 |
| THE Essex Commercial Group Ltd | Wholesale & retail | 2025 |
| THE Essex Wedding Centre Ltd | Real estate | 2025 |
| THE Excellent Academics Ltd | Education | 2021 |
| THE Flitch Green Academy | Education | 2010 |
| THE Fragile X Society | Health & social care | 2008 |
| THE Gresham Four Management Company Limited | Administrative & support | 1988 |
| THE Growth Alchemist Ltd | Information & communication | 2025 |
| THE Heritage & History Fund Limited | Other services | 2026 |
| THE Humble Herb Ltd | Manufacturing | 2023 |
| THE Hygeia Clinic Ltd | Health & social care | 2017 |
| THE Interiors Store Ltd | Wholesale & retail | 2022 |
| THE Knee Group Limited | Real estate | 2015 |
| THE Landscape Management Company (U.K.) Limited | Extraterritorial | 2013 |
| THE Little Bagel Box Ltd | Hospitality | 2020 |
| THE Little Bagel Box Shop Ltd | Hospitality | 2024 |
| THE Livermores (Great Dunmow) Management Company Limited | Households | 2012 |
| THE Meadows Little Canfield Management Limited | Households | 2012 |
| THE Meads Residents Association Limited | Households | 2024 |
| THE Mindset Executive Ltd | Professional & scientific | 2017 |
| THE Modern Greengrocer Limited | Wholesale & retail | 2017 |
| THE Old Chapel (Stebbing) Management Company Limited | Households | 2009 |
| THE Pamper Club Ltd | Other services | 2014 |
| THE Performance Executive Ltd | Administrative & support | 2017 |
| THE Pooches Spa Ltd | Other services | 2025 |
| THE Sloppy Barber Limited | Other services | 2026 |
| THE Sourcing Collections Limited | Wholesale & retail | 2023 |
| THE Sports Therapy Clinic Ltd | Health & social care | 2015 |
| THE Survey MAN Ltd | Professional & scientific | 2023 |
| THE Sustainability Place Limited | Professional & scientific | 2025 |
| THE Tax Planning Service Limited | Financial services | 2025 |
| THE Thatchers Hatfield Heath Limited | Hospitality | 2010 |
| THE Wellness Club Ltd | Extraterritorial | 2025 |
| THE Westbury N22 Limited | Hospitality | 2014 |
| THE Windmill Pre-School | Education | 2004 |
| THE Wrestlers Limited | Hospitality | 2006 |
| THEFULLWORKS1 Limited | Administrative & support | 2023 |
| Therosegarden Limited | Wholesale & retail | 2015 |
| Thirty Three Eighty Eight Clothing Ltd | Wholesale & retail | 2025 |
| Thomas William Barbers Limited | Other services | 2019 |
| Thomas William Haverhill Ltd | Other services | 2023 |
| Thornley Manor Limited | Real estate | 2019 |
| Three Oaks Counselling Services Limited | Health & social care | 2012 |
| Three Pandas Express Ltd | Hospitality | 2026 |
| Three Square Design Limited | Professional & scientific | 2008 |
| Thurlow Park (Investments) Limited | Households | 1957 |
| Tiawo Boutique Ltd | Wholesale & retail | 2021 |
| Ticket Home CIC | Health & social care | 2024 |
| Tiddly TUK Ltd | Hospitality | 2018 |
| Tidmarsh Interiors Limited | Manufacturing | 2010 |
| Tifien Limited | Health & social care | 2014 |
| TJA Tree Culture Ltd | Administrative & support | 2024 |
| TNL Cotswolds Ltd | Real estate | 2023 |
| TNL Ltd | Professional & scientific | 2012 |
| Together for Essex Ltd | Other services | 2022 |
| Tokley & Morrison Ltd | Other services | 2016 |
| Tomy Alex Transport Ltd | Transport & logistics | 2026 |
| Tooleys Estate Ltd | Households | 2012 |
| Top to TOE Specialist Cleaning Ltd | Administrative & support | 2023 |
| Total Fitness and Recovery 365 Limited | Health & social care | 2019 |
| Total Quality Cleaners Ltd | Administrative & support | 2017 |
| Total Roofing Services Ltd | Construction | 2026 |
| Totalprotect Ltd | Administrative & support | 2021 |
| Totteridge Building Services Interiors Limited | Construction | 2020 |
| Totteridge Building Services Limited | Construction | 2011 |
| Toynbee Editorial Services Ltd | Information & communication | 2007 |
| Transformational Runners Limited | Information & communication | 2024 |
| Trant Limited | Extraterritorial | 2003 |
| Traymoor Limited | Manufacturing | 1991 |
| Treecology Ltd | Administrative & support | 2026 |
| Treiculori Ltd | Wholesale & retail | 2018 |
| Trendy Developments Ltd | Real estate | 2024 |