| TGK Retail Ltd | Wholesale & retail | 2025 |
| TGM Top Garden Maintenance Limited | Administrative & support | 2017 |
| Tgwac Limited | Professional & scientific | 2011 |
| TH Properties and Lettings Ltd | Real estate | 2025 |
| Thame Solar Ltd | Construction | 2023 |
| Thames Diesel Holdings Limited | Financial services | 2021 |
| Thames Valley Realtors Limited | Real estate | 2024 |
| Thapa Tech Solutions Ltd | Information & communication | 2025 |
| Tharuniga Ltd | Wholesale & retail | 2023 |
| That Sports Consultancy Group Limited | Arts & recreation | 2023 |
| Thatchers Farm Limited | Agriculture & fishing | 1959 |
| Thatshowiroll.Com Limited | Professional & scientific | 2012 |
| THE Chennai Medicals Limited | Health & social care | 2012 |
| THE 23RD Hour Ltd | Wholesale & retail | 2025 |
| THE Adeola House Ltd. | Public administration | 2022 |
| THE Admin Habit Ltd | Administrative & support | 2026 |
| THE Allstar Community Academy Ltd | Health & social care | 2011 |
| THE Alternative Accomodation Agency Limited | Real estate | 2009 |
| THE Althorne Estate Limited | Agriculture & fishing | 2016 |
| THE Althorne Estate Vineyard Ltd | Manufacturing | 2021 |
| THE Ansell Rose Partnership Ltd | Education | 2018 |
| THE Anslow Partnership Group Limited | Professional & scientific | 2008 |
| THE Appleyard (Flitton) Resident Management Company Limited | Households | 2022 |
| THE Appliance Warehouse Limited | Wholesale & retail | 2002 |
| THE Aqua Academy Swim School Limited | Education | 2016 |
| THE Aqua Group Swim School Ltd | Education | 2023 |
| THE Architectural Dance Company Ltd | Arts & recreation | 2018 |
| THE ARK Centre C.I.C. | Health & social care | 2015 |
| THE Art and Design Studio Ltd | Arts & recreation | 2020 |
| THE Art of Things Ltd | Information & communication | 2025 |
| THE Arthington Publishing Company Limited | Professional & scientific | 2002 |
| THE Ashes (Writtle) Limited | Households | 2018 |
| THE Association of Child Death Review Professionals | Other services | 2023 |
| THE Atrium Clinic and Therapy Centre Limited | Health & social care | 1999 |
| THE Aussie Barbeque Company Limited | Hospitality | 2003 |
| THE Avenue (Wickford) Management Company Limited | Households | 2017 |
| THE Bakers Arms, Stock Ltd | Hospitality | 2025 |
| THE Barbershop (Melford) Limited | Other services | 2009 |
| THE Barbershop Studios Ltd | Other services | 2008 |
| THE Barbershop UK1 Ltd | Other services | 2019 |
| THE Beauty Service Network Limited | Administrative & support | 2020 |
| THE Beauty Yard Limited | Administrative & support | 2010 |
| THE Beavis Partnership LLP | | 2009 |
| THE Belfry Secretary Limited | Public administration | 2025 |
| THE Bell (Ingatestone) Limited | Hospitality | 2006 |
| THE Bell Danbury Ltd | Hospitality | 2025 |
| THE Bespoke Staircase Company Limited | Manufacturing | 2008 |
| THE Bespoke Wardrobe (Essex) Ltd | Wholesale & retail | 2017 |
| THE Big Art Company Limited | Wholesale & retail | 2013 |
| THE Big Sheep Holdings Limited | Financial services | 2024 |
| THE Biltong Brothers Essex Ltd | Manufacturing | 2021 |
| THE Bitcoin Office Limited | Information & communication | 2025 |
| THE Blooming HUT Ltd | Wholesale & retail | 2023 |
| THE Botox Doctor Limited | Health & social care | 2024 |
| THE Brasserie MS Ltd | Hospitality | 2020 |
| THE Brentwood Hairdresser Limited | Other services | 2017 |
| THE Bridgeark Group Ltd | Health & social care | 2025 |
| THE Britannia Inn and Restaurant Limited | Hospitality | 2009 |
| THE BUG HUT Ltd | Wholesale & retail | 2017 |
| THE BUZ Limited | Information & communication | 1999 |
| THE Casting Haus Co Ltd | Construction | 2018 |
| THE CBE Partnership Limited | Professional & scientific | 2007 |
| THE CFO Advisory Limited | Professional & scientific | 2023 |
| THE Change Portfolio | Health & social care | 1996 |
| THE Chelmer Canal Trust Limited | Other services | 2000 |
| THE Chelmsford Brewery Company Ltd | Professional & scientific | 2010 |
| THE Chelmsford Club Lettings Co Limited | Real estate | 2016 |
| THE Chelmsford Diocese Educational Trust | Education | 2011 |
| THE Chelmsford Learning Partnership | Education | 2012 |
| THE Chelmsford Roofing Company Ltd | Construction | 2016 |
| THE Children's House Ltd | Health & social care | 2018 |
| THE Chop in Shop Limited | Other services | 2007 |
| THE Chow Chef Ltd | Hospitality | 2025 |
| THE City of Chelmsford Gymnastics Club Limited | Education | 2018 |
| THE Cloud REC Company Ltd | Administrative & support | 2022 |
| THE Club Chelmsford Holdings Ltd | Financial services | 2025 |
| THE Coach House Tofts Lane Limited | Real estate | 2017 |
| THE Cocktail Kitchen Lounge Bar & Grill Limited | Hospitality | 2022 |
| THE Coffee City Ltd | Hospitality | 2021 |
| THE Compact Furniture Co Ltd | Wholesale & retail | 2026 |
| THE Concentric Curriculum Limited | Education | 2018 |
| THE Construction LAB Limited | Professional & scientific | 2025 |
| THE Consultant Group Ltd | Professional & scientific | 2016 |
| THE Continence People Limited | Wholesale & retail | 2020 |
| THE Cool Crew & Co. Ltd | Manufacturing | 2025 |
| THE Copse (Stansted) Management Company Limited | Households | 2002 |
| THE Cornflower Florist Ltd | Wholesale & retail | 2023 |
| THE Cosy Crumb Ltd | Hospitality | 2026 |
| THE Country Trust | Education | 2007 |
| THE Countryside Group Investments Ltd | Real estate | 1991 |
| THE Countryside Group Limited | Administrative & support | 1990 |
| THE Courier Company (Tcc-Uk) Ltd | Transport & logistics | 2023 |
| THE Courts Campsite Ltd | Hospitality | 2023 |
| THE Courtyard (Hatfield Peverel) Limited | Households | 2022 |
| THE Crispy COD Chelmsford Limited | Hospitality | 2025 |
| THE Crust Kitchen Limited | Hospitality | 2026 |
| THE Crystal Tree Therapy Rooms Ltd | Wholesale & retail | 2009 |
| THE Daily CUP Ltd | Hospitality | 2026 |
| THE Dalhousie Coffee Company Limited | Hospitality | 2014 |
| THE Dames Commander Society CIC | Other services | 2024 |