| TGM Trans Ltd | Transport & logistics | 2016 |
| Thaxted Property Company Limited | Real estate | 2025 |
| THE 121 Coach App Ltd | Education | 2025 |
| THE African Impact Foundation | Administrative & support | 2007 |
| THE Bakehouse Hertford Limited | Real estate | 2020 |
| THE Bluetick Show Limited | Information & communication | 2025 |
| THE Book Nook Community Bookshop C.I.C. | Wholesale & retail | 2022 |
| THE Calnat Group Limited | Real estate | 2025 |
| THE Carolina Blind Company Ltd | Manufacturing | 2013 |
| THE Chapel Swim School Ltd | Education | 2022 |
| THE Circle: Counselling and Psychotherapy Ltd | Health & social care | 2025 |
| THE Complete Restoration Company (Hertford) Limited | Construction | 2000 |
| THE Crafty Goose Artisan School Ltd | Education | 2018 |
| THE Damarthian Group Ltd | Real estate | 2024 |
| THE Datum Group Material Supplies Ltd | Wholesale & retail | 2022 |
| THE Disabled Ramblers | Arts & recreation | 2004 |
| THE Dolphin Medical and Therapy Rooms Limited | Real estate | 2022 |
| THE Dorset Farm Limited | Hospitality | 2019 |
| THE Edge Outdoor Activities Limited | Arts & recreation | 2016 |
| THE Electrical Department Ltd | Information & communication | 2016 |
| THE Fairy Godmothers Wedding & Event Planners Ltd | Other services | 2019 |
| THE Fitness Room (Ware) Ltd | Arts & recreation | 2014 |
| THE Gilded Queen Ltd | Information & communication | 2024 |
| THE Golden Fleece (Braughing) Limited | Real estate | 2010 |
| THE Good Recruitment Group Limited | Financial services | 2022 |
| THE Grange (P.H.S.) Company Limited | Households | 1989 |
| THE Great Traveller Ltd | Wholesale & retail | 1996 |
| THE Green Property Management Limited | Real estate | 2014 |
| THE Harwoods Management Limited | Households | 2008 |
| THE Hertfordshire Cleaning Company Ltd | Administrative & support | 2024 |
| THE Historical Research Company Limited | Arts & recreation | 2019 |
| THE Holistic Lotus Ltd | Health & social care | 2022 |
| THE Ineffable Group Limited | Administrative & support | 2020 |
| THE Institute of Equality and Diversity Professionals | Professional & scientific | 2008 |
| THE IVY Room Aesthetics Ltd | Other services | 2026 |
| THE Lancaster Clinic Ltd | Health & social care | 2024 |
| THE Landscape MAN Ltd | Administrative & support | 2025 |
| THE Leadership High Limited | Professional & scientific | 2019 |
| THE Learning Edge Limited | Professional & scientific | 2013 |
| THE Little Construction Company Limited | Construction | 2008 |
| THE London Barber Ltd | Other services | 2013 |
| THE London Care and Support Forum Limited | Administrative & support | 2012 |
| THE Luxury Catering Company Limited | Hospitality | 2017 |
| THE Mental Wellbeing Centre CIC | Health & social care | 2017 |
| THE Millfield Rugby Legends Memorial Co. Ltd | Administrative & support | 2003 |
| THE Mobile Coffee Company Limited | Administrative & support | 2016 |
| THE Modern Darkroom Ltd | Professional & scientific | 2026 |
| THE Musley Hill Management Company Limited | Households | 2006 |
| THE Nest Holistic Therapies Limited | Health & social care | 2023 |
| THE Nest Rural Wellbeing & Glamping Retreat Limited | Arts & recreation | 2023 |
| THE Nestaurant Limited | Hospitality | 2020 |
| THE Nottingham Horror Collective Ltd | Information & communication | 2023 |
| THE Numbers Division Ltd | Information & communication | 2018 |
| THE Nunchi Clinic Ltd | Health & social care | 2024 |
| THE Oak Hospitality Ltd | Hospitality | 2022 |
| THE Old Coach House (Ware) Limited | Households | 1996 |
| THE Pheonix Directive Ltd | Professional & scientific | 2026 |
| THE Photographic Collectors' Club International Ltd. | Other services | 2003 |
| THE Plague Doctor Limited | Arts & recreation | 2025 |
| THE Printworks (Royston) Limited | Manufacturing | 2006 |
| THE Probate and Will Centre Limited | Professional & scientific | 2011 |
| THE Probate Bureau Limited | Administrative & support | 1999 |
| THE Property Rental Group Ltd | Real estate | 2025 |
| THE Protective Packaging Company LLP | | 2007 |
| THE Psychology Studio Ltd | Professional & scientific | 2024 |
| THE Radiator Centre Limited | Extraterritorial | 2013 |
| THE Recruitment Index Ltd | Administrative & support | 2020 |
| THE Retrofit Association | Other services | 2021 |
| THE Rowney Priory Management Company Limited | Households | 2014 |
| THE Sage Garden Ltd | Wholesale & retail | 2023 |
| THE Seafreight Group Limited | Transport & logistics | 2024 |
| THE Shield Platform Ltd | Information & communication | 2025 |
| THE Shire Beauty Training Group Limited | Education | 2016 |
| THE Shire Salon Ltd | Other services | 2020 |
| THE Sidehill House Company Limited | Financial services | 2009 |
| THE Simpson & Phillips PUB Company Limited | Hospitality | 2014 |
| THE Skullery Ltd | Arts & recreation | 2020 |
| THE Society of Association Management Limited | Other services | 2021 |
| THE Society of M&V Professionals | Other services | 2022 |
| THE Stone Company Hertfordshire Limited | Wholesale & retail | 2021 |
| THE Stortford Sanctuary Ltd | Other services | 2025 |
| THE Studio in the Forest Ltd | Arts & recreation | 2025 |
| THE Sushi Fusion Battersea Ltd | Hospitality | 2026 |
| THE Sushi Fusion Holdings Ltd | Hospitality | 2025 |
| THE Sushi Fusion Luton Ltd | Hospitality | 2025 |
| THE Sushi Fusion Milton Keynes Ltd | Hospitality | 2026 |
| THE Sushi Fusion Victoria Ltd | Hospitality | 2025 |
| THE Sushi Fusion Waterloo Ltd | Hospitality | 2026 |
| THE Sushi Fusion Watford Ltd | Hospitality | 2025 |
| THE Talent SET Limited | Administrative & support | 2018 |
| THE Tappenden Charity | Administrative & support | 2006 |
| THE Ware Drill Hall Association Limited | Arts & recreation | 2001 |
| THE Waterson Partnership LLP | | 2004 |
| THE Wellness Directory Ltd | Wholesale & retail | 2025 |
| THE Willows (Amwell Lane) Management Company Limited | Households | 1988 |
| THE Wonderful Will Company Limited | Professional & scientific | 2024 |
| THE XY Effect Ltd | Education | 2025 |
| Thealana Ltd | Professional & scientific | 2026 |
| Thenest CIC | Health & social care | 2021 |
| Thenuts Ltd | Manufacturing | 2025 |