| Terabithia Communications Ltd | Professional & scientific | 2025 |
| TG Healthcare Services Limited | Wholesale & retail | 2019 |
| THE Avenue Nursery Dronfield Ltd | Education | 2014 |
| THE Beer House UP North Ltd | Hospitality | 2014 |
| THE Blossomist Ltd | Wholesale & retail | 2024 |
| THE Carlton Property Company (Sheffield) Limited | Construction | 1960 |
| THE Chefs Tableware Company Limited | Wholesale & retail | 2013 |
| THE Church Farm Craft Company Ltd | Manufacturing | 2019 |
| THE Covey Group Ltd | Professional & scientific | 2015 |
| THE Cross Daggers Ltd | Hospitality | 2016 |
| THE Dental Referral Centre Limited | Health & social care | 2017 |
| THE Drawing Office (Chesterfield) Limited | Professional & scientific | 2006 |
| THE Dronfield Foot Clinic Ltd | Health & social care | 2015 |
| THE Green Care Home, Dronfield Limited | Professional & scientific | 2013 |
| THE Green Care Home, Hasland Limited | Professional & scientific | 2013 |
| THE Green Nursing Homes Limited | Health & social care | 2000 |
| THE Hariman Limited | Real estate | 2021 |
| THE Horsleygate Estate Company Limited | Real estate | 1988 |
| THE Jockey at Unstone Limited | Hospitality | 2025 |
| THE Later Life Mortgage Centre Ltd | Financial services | 2024 |
| THE Little Italian Company Limited | Hospitality | 1997 |
| THE Magic Sunflower Ltd | Hospitality | 2022 |
| THE Manor House (Dronfield) Limited | Hospitality | 2008 |
| THE Nail and Beauty Lounge (Chesterfield) Ltd | Other services | 2024 |
| THE Oak Pond Ltd | Hospitality | 2016 |
| THE Peaks Farm Fresh Eggs Co. Ltd | Wholesale & retail | 2025 |
| THE Pensions Adviser Ltd | Financial services | 2015 |
| THE Playhouse Enterprise Ltd | Hospitality | 2025 |
| THE Proper Dent Company Ltd | Wholesale & retail | 2023 |
| THE Social Dog Daycare Ltd | Other services | 2024 |
| THE Tile Place (Dronfield) Limited | Wholesale & retail | 2009 |
| THE UK Vase Company Limited | Wholesale & retail | 2024 |
| THE Unorthodox Company Limited | Wholesale & retail | 2025 |
| THE Wedding Nanny Limited | Health & social care | 2025 |
| THE Wood Yard at Barlow Limited | Manufacturing | 2023 |
| THE Woolly Clothing Company Ltd | Manufacturing | 2023 |
| Therapy Session Athletics Ltd | Arts & recreation | 2024 |
| Think Tank Inc Limited | Professional & scientific | 2004 |
| Thinking Through Limited | Professional & scientific | 2020 |
| Thompson & Mckinnon Property Developments Ltd | Other services | 2019 |
| Thompson & Sons Property Holdings Ltd | Other services | 2019 |
| Thorlinings UK Ltd | Construction | 2016 |
| Thorns Forever Ltd | Manufacturing | 2023 |
| Tiffin Original Ltd | Hospitality | 2025 |
| TIM Hyde Ltd | Other services | 2019 |
| Timber Touch Flooring Ltd | Manufacturing | 2026 |
| Tmcl Engineering Limited | Professional & scientific | 2025 |
| TNJ Mortgages Limited | Financial services | 2020 |
| TNJ Specialist Finance Limited | Financial services | 2024 |
| Together WE Thrive Dronfield C.I.C. | Health & social care | 2026 |
| TOM Pearson & Sons Limited | Manufacturing | 2014 |
| Toolr Ltd | Administrative & support | 2026 |
| Topfield Nest Ltd | Real estate | 2024 |
| Totally Baked Vegan Limited | Manufacturing | 2021 |
| Totley Brook Lessees Limited | Real estate | 1979 |
| Traffic Manager View Limited | Information & communication | 2006 |
| Trees and Vegetation Management Limited | Agriculture & fishing | 2023 |
| Triple a Support Ltd | Education | 2024 |
| TTA 2015 Limited | Financial services | 2015 |
| Tyke Trial Ltd | Other services | 2002 |
| Tyresoul Ltd | Wholesale & retail | 2024 |
| Underdog Ventures Ltd | Hospitality | 2019 |
| Underground Learning Group Ltd | Education | 2025 |
| UP Front Advice Ltd. | Financial services | 2002 |
| Upstream Detail Ltd | Administrative & support | 2026 |
| VA Innovation Ltd | Professional & scientific | 2021 |
| Valentines Court Management Company Limited | Households | 2021 |
| Vantage (Commercial Services) Limited | Professional & scientific | 2005 |
| Vape Guyz Ltd | Wholesale & retail | 2024 |
| Vehicle Purchasing Services Limited | Wholesale & retail | 2022 |
| Velocity Management Services Ltd | Real estate | 2022 |
| Venetian Concepts Limited | Construction | 2017 |
| Versaillesclo Limited | Wholesale & retail | 2021 |
| Viewtech Security Limited | Construction | 2005 |
| Viking Court Limited | Wholesale & retail | 1991 |
| Viktor Koenig (UK) Ltd | Manufacturing | 2015 |
| Vision 3SIXTY Limited | Other services | 2017 |
| Volks-Tek Ltd | Wholesale & retail | 2021 |
| W. and E.A. Lack Limited | Real estate | 1965 |
| Walton Brown Developments Limited | Construction | 2012 |
| Walton Properties (Derbyshire) Limited | Real estate | 2001 |
| Ward Architecture Limited | Professional & scientific | 2020 |
| Watki Superabrasives Ltd | Wholesale & retail | 2012 |
| Wayne Exley Carpets Ltd | Construction | 2026 |
| Weathervane Steel Buildings Limited | Manufacturing | 2016 |
| Weavern Court Management Company Limited | Households | 1985 |
| Wellhouse Homes Ltd | Real estate | 2024 |
| Westbrook Developments Limited | Real estate | 2021 |
| Westbrook Developments Project Limited | Construction | 2021 |
| Westbrook EOT Limited | Financial services | 2023 |
| Westbrook South Africa Limited | Manufacturing | 2008 |
| Wharehaus Limited | Wholesale & retail | 2021 |
| Whirlow Property Company Limited | Real estate | 2007 |
| White Aesthetics Studio Ltd | Other services | 2024 |
| Whitethorn Holdings Ltd | Real estate | 2026 |
| Whittaker's Diggers Ltd | Administrative & support | 2024 |
| Whitworth Manor Holdings Limited | Hospitality | 2019 |
| Will Grants Limited | Professional & scientific | 2023 |
| Williams Business Services Ltd | Administrative & support | 2019 |
| Willowstone Group Ltd | Professional & scientific | 2025 |