| THE Templars Residents Management Company Limited | Real estate | 2021 |
| THE Tiles Outlet Ltd | Wholesale & retail | 2022 |
| THE Towpath Management Company Limited | Households | 2000 |
| THE Treatment Room Northampton Ltd | Other services | 2017 |
| THE Treetop Centre Limited | Health & social care | 2017 |
| THE Triad Life Limited | Wholesale & retail | 2024 |
| THE Tubby Tyre Scooter Company Ltd | Extraterritorial | 2018 |
| THE Tuition Solution Ltd | Education | 2022 |
| THE Twenty Ltd | Arts & recreation | 2025 |
| THE Two Storey Partnership Limited | Information & communication | 2008 |
| THE Tyler Partnership Ltd | Professional & scientific | 2013 |
| THE UK Speckle Park Association Limited | Other services | 2025 |
| THE UK Trade Hub Limited | Information & communication | 2020 |
| THE Ukandus Ltd | Health & social care | 2017 |
| THE Ultimate Chocolate Boutique Ltd | Wholesale & retail | 2025 |
| THE Undiscovered Company Limited | Extraterritorial | 2025 |
| THE University of Northampton Enterprises Limited | Administrative & support | 1995 |
| THE Unwin Club Limited | Hospitality | 2006 |
| THE Urb#N Food Company Limited | Hospitality | 2019 |
| THE VIA Opus Contractors Ltd | Construction | 2025 |
| THE Video News Company Ltd | Information & communication | 2010 |
| THE Village Antique Market Ltd | Wholesale & retail | 2018 |
| THE Village Kitchen (Weldon) Limited | Hospitality | 2019 |
| THE Village Tearoom Limited | Hospitality | 2025 |
| THE Vintage Garden Room Ltd | Other services | 2018 |
| THE Vintage Tea Room Northampton Ltd | Hospitality | 2018 |
| THE Waiter's Friend Company Limited | Wholesale & retail | 2000 |
| THE Warm Welcome Chequers Ltd | Hospitality | 2025 |
| THE Warm Welcome Mermaid Ltd | Hospitality | 2026 |
| THE Waste Management Industry Training and Advisory Board Limited | Education | 2020 |
| THE Watch Boutique Limited | Wholesale & retail | 2017 |
| THE Water Gardens (HP) Limited | Real estate | 2023 |
| THE Wave Bar Limited | Hospitality | 2018 |
| THE Website Doctors Ltd | Information & communication | 2024 |
| THE Well Nest Northampton Ltd | Health & social care | 2025 |
| THE Wells Management Company Limited | Households | 1997 |
| THE Wharf Residents Group Ltd | Households | 2013 |
| THE Wheel Deal Limited | Wholesale & retail | 2006 |
| THE White Furniture Company Limited | Wholesale & retail | 2015 |
| THE White Hart (Hackleton) Limited | Hospitality | 2012 |
| THE White Horse Old Limited | Hospitality | 2022 |
| THE White House Hair & Beauty Ltd | Other services | 2025 |
| THE White RUG PUB Company Limited | Hospitality | 2013 |
| THE Willing STUDIO65 Limited | Other services | 2007 |
| THE Wilson Collective Ltd | Real estate | 2024 |
| THE Windmill Natural Green Burial Ltd | Other services | 2020 |
| THE Window Cleaning MAN Ltd | Administrative & support | 2024 |
| THE Woad Farm Project CIC | Health & social care | 2022 |
| THE Wombling Wood Company Limited | Manufacturing | 2023 |
| THE Workhouse (Billing Road) Ltd | Administrative & support | 2020 |
| THE Workhouse (Daventry) Ltd | Administrative & support | 2021 |
| THE Workhouse (Fish ST) Ltd | Administrative & support | 2024 |
| THE Workhouse (Hazelrigg) Ltd | Administrative & support | 2023 |
| THE Workhouse (Northampton) Ltd | Administrative & support | 2018 |
| THE Workhouse (Rothwell) Ltd | Administrative & support | 2026 |
| THE Workhouse (ST Edmunds Road) Ltd | Administrative & support | 2023 |
| THE Workhouse Group of Companies Ltd | Administrative & support | 2021 |
| THE Workhouse of Brixworth Ltd | Hospitality | 2017 |
| THE Works (Ethel Street) Management Limited | Households | 1989 |
| THE Workshop Partnership Limited | Administrative & support | 1999 |
| THE Worx Group Ltd | Construction | 2020 |
| THE Yews Consulting LLP | | 2016 |
| THE Yyyy Limited | Professional & scientific | 2017 |
| The-Him Global Ltd | Transport & logistics | 2011 |
| The-Red-Limit Limited | Information & communication | 2014 |
| Theabz Limited | Wholesale & retail | 2023 |
| Theantis (Holdings) Ltd | Financial services | 2011 |
| Theatretrain Milton Keynes Ltd | Arts & recreation | 2018 |
| Thebeckss Enterprise Limited | Health & social care | 2023 |
| Thebubble Ltd | Information & communication | 2026 |
| Theekat Collection Ltd | Households | 2026 |
| Thefscompany Limited | Extraterritorial | 2017 |
| Thegadgetexperts Ltd | Wholesale & retail | 2025 |
| Thelandlordschoice Limited | Real estate | 2023 |
| Thelovableclub Limited | Wholesale & retail | 2025 |
| Themlundiras Ltd | Arts & recreation | 2025 |
| Themoving Limited | Administrative & support | 2024 |
| Theo Lubricants UK Ltd | Wholesale & retail | 2025 |
| Theo Solutions Ltd | Administrative & support | 2024 |
| Theoblong Global Limited | Information & communication | 2010 |
| Theondemand Group Limited | Other services | 2013 |
| Theonly Health Limited | Health & social care | 2025 |
| Theory of Fitness Ltd | Arts & recreation | 2025 |
| Thepaintshack.Co.Uk Ltd | Administrative & support | 2018 |
| Thephotographycompany Limited | Professional & scientific | 2013 |
| Thepip Limited | Extraterritorial | 2014 |
| Thepropertysaints Limited | Real estate | 2010 |
| Theraprime Ltd | Health & social care | 2024 |
| Therapy and Consultancy Solutions Ltd | Health & social care | 2020 |
| Therma Screens Limited | Manufacturing | 1986 |
| Thermal Installations Ltd | Other services | 2020 |
| Thermasolutions International Limited | Manufacturing | 2006 |
| Thermo Consulting Limited | Professional & scientific | 2022 |
| Thermographic Services International Limited | Professional & scientific | 2007 |
| THES0 Consulting Limited | Professional & scientific | 2023 |
| Theseus Projects Limited | Extraterritorial | 1994 |
| Thessco Limited | Manufacturing | 1984 |
| Thestgroup Ltd | Transport & logistics | 2020 |
| Thetransformationlab Ltd | Health & social care | 2026 |
| Thettayil Healthcare Limited | Health & social care | 2022 |