| Swish Recruitment Ltd | Administrative & support | 2016 |
| Swoop Coaching Ltd | Other services | 2021 |
| Sycamore Holdings Shottle Limited | Real estate | 2022 |
| Symuk Ltd | Hospitality | 2023 |
| Synthesis Business Solutions Limited | Information & communication | 2007 |
| Systemage Limited | Real estate | 1993 |
| T & P Walker Enterprises Limited | Professional & scientific | 2020 |
| T2A Ltd | Professional & scientific | 2017 |
| Tabletop Events Limited | Wholesale & retail | 2020 |
| TAG Composites Ltd | Manufacturing | 2026 |
| Talbot Hotel and Restaurant Ltd | Hospitality | 2025 |
| Talk Staff Group Limited | Administrative & support | 2009 |
| Talk Staff Payroll Limited | Administrative & support | 2012 |
| Talk Staff Recruitment Limited | Professional & scientific | 2019 |
| Tanglewood Property Management Limited | Real estate | 2007 |
| Tangopop Designs Ltd | Information & communication | 2018 |
| Tania Purdy Ltd | Wholesale & retail | 2024 |
| Tannhauser Ltd | Information & communication | 2022 |
| TAP2RECRUITMENT Limited | Administrative & support | 2025 |
| Tarnold Limited | Extraterritorial | 2024 |
| Tasting Club Foods Ltd | Hospitality | 2021 |
| Tavern Belper Ltd | Hospitality | 2026 |
| Taylor Furniture Ltd | Manufacturing | 2015 |
| Taylor's Toilets Ltd | Administrative & support | 2024 |
| Taylor-Day Tree Services Limited | Administrative & support | 2026 |
| Taylored Food Solutions Limited | Professional & scientific | 2023 |
| Tbmj Limited | Information & communication | 2011 |
| TC Plant Services Limited | Manufacturing | 2020 |
| Tccns Ltd | Health & social care | 2018 |
| TDC Car Solutions Limited | Wholesale & retail | 2026 |
| TDG Solutions Ltd | Real estate | 2025 |
| Techdrive Dynamics Solutions Ltd | Professional & scientific | 2024 |
| Technichols Ltd | Wholesale & retail | 2024 |
| Tensixfive Limited | Real estate | 2019 |
| TFS Fabrics (UK) Limited | Wholesale & retail | 2013 |
| TGW Plumbing & Heating Ltd | Construction | 2025 |
| THE Accessible Hoodie Company Ltd | Wholesale & retail | 2025 |
| THE American Quarter Horse Association UK Limited | Agriculture & fishing | 1975 |
| THE Audiology Lounge Ltd | Wholesale & retail | 2025 |
| THE Base (Derby) Limited | Hospitality | 2020 |
| THE Base (TRR) Ltd | Arts & recreation | 2024 |
| THE Battelle Holland Group Ltd. | Information & communication | 2025 |
| THE Bear Inn and Hotel Ltd | Hospitality | 2023 |
| THE Belper Cleaning Company Limited | Administrative & support | 2026 |
| THE Belper PUB Company Limited | Hospitality | 1995 |
| THE Betterment Group Limited | Health & social care | 2022 |
| THE Boiler Service Company Derby Ltd | Construction | 2020 |
| THE Boxing Shop Ltd | Wholesale & retail | 2026 |
| THE Bulls Head Derbyshire Ltd | Hospitality | 2018 |
| THE Cabin of Makers CIC | Wholesale & retail | 2024 |
| THE Callis Apartments Management Company Limited | Real estate | 2006 |
| THE Community Barber C.I.C. | Education | 2019 |
| THE Creative Heroes Limited | Professional & scientific | 2023 |
| THE Derby & Sandiacre Canal Trust Limited | Transport & logistics | 1994 |
| THE Derby Canal Co Limited | Transport & logistics | 2021 |
| THE Derby Injury Clinic Ltd | Health & social care | 2021 |
| THE Ecclesbourne School | Education | 2011 |
| THE Esland Group Holdings Limited | Administrative & support | 2017 |
| THE Esland Group Limited | Financial services | 2009 |
| THE Flowershop of Ashbourne Limited | Wholesale & retail | 2010 |
| THE Gated Cathedral Tattoo Ltd | Arts & recreation | 2024 |
| THE Gauntlet Fight Academy Ltd | Arts & recreation | 2016 |
| THE Hub and the TUB Ltd | Construction | 2015 |
| THE HUM House Ltd | Hospitality | 2026 |
| THE Hutfall Management Company Limited | Households | 2017 |
| THE Ivory Edit Ltd. | Wholesale & retail | 2022 |
| THE Little Peace Company Ltd | Wholesale & retail | 2023 |
| THE Little Shed Ashbourne Ltd | Wholesale & retail | 2011 |
| THE Marah Consultancy Limited | Other services | 2012 |
| THE Mindfulness Teacher Ltd | Education | 2017 |
| THE Natural Horse Group | Agriculture & fishing | 2004 |
| THE Netball LAB Limited | Arts & recreation | 2024 |
| THE Old Kings Head Ltd | Hospitality | 2022 |
| THE Party Palace (Derby) Ltd | Arts & recreation | 2019 |
| THE Pet DEN Ltd | Wholesale & retail | 2023 |
| THE Plastic Solution Limited | Wholesale & retail | 2022 |
| THE Retro Football Company Ltd | Wholesale & retail | 2021 |
| THE Right Consultancy Limited | Professional & scientific | 2010 |
| THE Royal British Legion (Belper) Club Limited | Other services | 2009 |
| THE Secret Garden Holbrook Ltd | Hospitality | 2024 |
| THE Sitwell Tavern Ltd | Hospitality | 2021 |
| THE Tyre Brigade (GB) Limited | Wholesale & retail | 2014 |
| THE UK Carbon & Graphite Company Limited | Manufacturing | 1999 |
| THE White Picket Fence Consultancy Ltd | Hospitality | 2022 |
| THE William Milford Limited | Hospitality | 2024 |
| THE Woodridge Management Company Limited | Real estate | 1998 |
| THE ZOO Holbrook Ltd | Other services | 2024 |
| Thermasave UK Limited | Administrative & support | 2018 |
| Thesaloncircle Ltd | Administrative & support | 2026 |
| Thirlmere 1962 Limited | Extraterritorial | 2013 |
| Thjmarketing Limited | Professional & scientific | 2025 |
| Thomas Bradley Investments Ltd | Real estate | 2012 |
| Thomas TV Services Ltd | Construction | 2026 |
| Thorn Tree Limited | Hospitality | 2017 |
| Thornglade UK Limited | Other services | 2003 |
| Thpaffiliate Ltd | Professional & scientific | 2026 |
| Thrud of the Wood Ltd | Arts & recreation | 2023 |
| TIC Heating Solutions Limited | Construction | 2013 |
| Tiddlyw-Inks Tattoo Limited | Arts & recreation | 2025 |
| Time 2 Refresh Ltd | Other services | 2010 |