| THE Beaverstock Consultancy Limited | Professional & scientific | 2003 |
| THE Big Little Duvet Company Ltd | Wholesale & retail | 2020 |
| THE Black Olive (Richmond) Limited | Hospitality | 2013 |
| THE Browns Roofing Group Ltd | Construction | 2026 |
| THE Buck Sadberge Ltd | Hospitality | 2025 |
| THE Bulk Box Company Ltd | Wholesale & retail | 2023 |
| THE Caterpillar Group Ltd | Professional & scientific | 2025 |
| THE CDB Group Limited | Administrative & support | 2023 |
| THE CEO Adventurer Limited | Arts & recreation | 2019 |
| THE Change Consultancy Ltd. | Professional & scientific | 2016 |
| THE Children’S Homes Association Limited | Other services | 2020 |
| THE CKM Collaborative Ltd | Education | 2026 |
| THE Classic Car Workshop Ltd | Wholesale & retail | 2009 |
| THE Client REP Ltd | Professional & scientific | 2021 |
| THE Connection Marketing Services Ltd | Professional & scientific | 2000 |
| THE Conscious Self Limited | Health & social care | 2023 |
| THE Craft MAN+ Ltd | Construction | 2025 |
| THE Crafty Mamas Darlington Limited | Administrative & support | 2022 |
| THE Crown PUB Hawes Ltd | Hospitality | 2018 |
| THE Cuckoo's Nest Cafe Limited | Hospitality | 2016 |
| THE Cyclopean Equity Group Limited | Hospitality | 2025 |
| THE Dalesman Hotel Ltd | Hospitality | 2012 |
| THE Darling Daisy Co. Weddings & Events Hire. Limited | Hospitality | 2025 |
| THE Darlington Farmers Auction Mart Company Limited | Agriculture & fishing | 1926 |
| THE Data Decorator Ltd | Information & communication | 2022 |
| THE Deanery Management Company (Darlington) Limited | Households | 2007 |
| THE Deli House Darlington Ltd | Hospitality | 2024 |
| THE Diamond Entertainment Group Ltd | Administrative & support | 2019 |
| THE Dog Barn (Darlington) Ltd | Agriculture & fishing | 2023 |
| THE Dog's Salons Limited | Extraterritorial | 2009 |
| THE Drunken Duck PUB Limited | Hospitality | 2025 |
| THE Education Village Academy Trust | Education | 2011 |
| THE Executive Director Limited | Education | 2008 |
| THE Facilities Company (Adel) Limited | Manufacturing | 2012 |
| THE Fairways (Phase 3) Management Company Limited | Households | 2002 |
| THE Family Tree Centre CIC | Health & social care | 2024 |
| THE Feel Good Group (Holdings) Limited | Other services | 2017 |
| THE Feel Good Group Limited | Wholesale & retail | 2006 |
| THE Feversham Arms (2025) Ltd | Hospitality | 2025 |
| THE Flawless Nail Co Ltd | Other services | 2018 |
| THE FOX Hole Piercebridge Limited | Hospitality | 2019 |
| THE FOX Hole Piercebridge PUB and Dining Company Limited | Hospitality | 2019 |
| THE Franciscan Publishing Company Ltd | Information & communication | 2021 |
| THE FUR Parlour Ltd | Other services | 2024 |
| THE Furniture Painting Company Ltd | Other services | 2023 |
| THE Gate Darlington Ltd | Hospitality | 2022 |
| THE Goldfish Club Ltd | Wholesale & retail | 2021 |
| THE Good EGG Fellas Limited | Agriculture & fishing | 2016 |
| THE Greedy Goat Ltd | Hospitality | 2024 |
| THE Grey Horse Darlington Ltd | Hospitality | 2026 |
| THE Greyhound Darlington Ltd | Hospitality | 2025 |
| THE Grove Private Wealth Ltd | Professional & scientific | 2018 |
| THE Guide Post Inn Limited | Administrative & support | 2017 |
| THE Hair LAB NE Ltd | Other services | 2019 |
| THE Hair Wardrobe Ltd | Wholesale & retail | 2019 |
| THE Havelock Arms Limited | Hospitality | 2023 |
| THE Havy PUB Limited | Hospitality | 2026 |
| THE Honest Videogame Company Limited | Professional & scientific | 2019 |
| THE International Railway Heritage Consultancy Limited | Arts & recreation | 2016 |
| THE JAP GUY Ltd | Wholesale & retail | 2021 |
| THE Joseph Pease 2018 Limited | Hospitality | 2018 |
| THE Judo DAN Academy Ltd | Education | 2021 |
| THE Juniper Tree 2017 Limited | Hospitality | 2017 |
| THE Kitchen Takeaway Darlington Ltd | Hospitality | 2021 |
| THE Liddle Property Company Ltd | Real estate | 2025 |
| THE Ling Forest Inn Limited | Hospitality | 2016 |
| THE Little Hair Space Ltd | Other services | 2026 |
| THE Little Harbour Ltd | Arts & recreation | 2026 |
| THE Little Present Company Ltd | Wholesale & retail | 2023 |
| THE Little Quaker Distillery LLP | | 2018 |
| THE Lovea Ltd | Hospitality | 2025 |
| THE LOW Block Group Limited | Professional & scientific | 2026 |
| THE Luxury Furniture Company Ltd T/A the Luxury BED Company Ltd | Wholesale & retail | 2017 |
| THE Luxury Wood Floor Company Ltd | Construction | 2025 |
| THE Maintenance Suppliers Limited | Wholesale & retail | 2025 |
| THE Marketing Performance Framework Ltd | Professional & scientific | 2023 |
| THE Mini Big Band Ltd | Arts & recreation | 2016 |
| THE Moon on a Stick Limited | Professional & scientific | 2013 |
| THE National Gamekeepers' Organisation Limited | Other services | 2017 |
| THE Norfolk Venue Ltd | Hospitality | 2019 |
| THE North East Enterprise Trust Community Interest Company | Education | 2013 |
| THE North Skelton Limited | Hospitality | 2017 |
| THE North Yorkshire Roofing Co Ltd | Construction | 2024 |
| THE Northern Academic Limited | Education | 2024 |
| THE Nurture Classroom Ltd | Education | 2025 |
| THE Office (North East) Limited | Professional & scientific | 2005 |
| THE Office Hub Ltd | Administrative & support | 2025 |
| THE Old Kennels Leisure Ltd | Hospitality | 2023 |
| THE Old School Muker Ltd | Wholesale & retail | 2019 |
| THE Only PUB Company (Britannia) Ltd | Hospitality | 2019 |
| THE Only PUB Company (Devonshire) Ltd | Hospitality | 2019 |
| THE Orchard (Ingleton) Management Company Limited | Households | 2003 |
| THE Orchard (Richmond) Management Company Limited | Households | 2018 |
| THE Oven Genius Limited | Administrative & support | 2017 |
| THE Overflow Storehouse Ltd | Wholesale & retail | 2025 |
| THE P2 Steam Locomotive Company Limited | Manufacturing | 2013 |
| THE Pasta Shop Darlington Ltd | Manufacturing | 2018 |
| THE Payroll Whisperer Ltd | Extraterritorial | 2024 |
| THE Pear & Olive (North East) Limited | Hospitality | 2024 |
| THE Peru Mission | Health & social care | 2011 |