| THE Borough Shoe Factory Management Co Ltd | Households | 2005 |
| THE Boutique Cottage Company Limited | Real estate | 2020 |
| THE Brackens (Brackley) Management Company Limited | Households | 2014 |
| THE Bramble Patch Limited | Wholesale & retail | 2007 |
| THE Branded Bunting Company Ltd. | Professional & scientific | 2018 |
| THE Braunston Management Company Limited | Households | 2003 |
| THE Bridge Northampton Ltd | Hospitality | 2024 |
| THE British Association of Play Therapists | Other services | 2005 |
| THE Brixworth Tyre Company Ltd | Wholesale & retail | 2018 |
| THE Brockhall Estate Limited | Real estate | 2000 |
| THE Brooke Group Children's Homes Limited | Health & social care | 2025 |
| THE BSS Group Limited | Wholesale & retail | 1899 |
| THE Bubble Teapot Suppliers UK Ltd | Wholesale & retail | 2026 |
| THE Burdens Group Limited | Wholesale & retail | 1982 |
| THE Burford Bar Company Ltd | Hospitality | 2021 |
| THE Business Coaching Firm Limited | Professional & scientific | 2016 |
| THE Butchers Block (Northampton) Limited | Hospitality | 2013 |
| THE Butchers Recruiter Limited | Administrative & support | 2019 |
| THE Byfield Manor Property Company Limited | Real estate | 2000 |
| THE Canoe Slalom and the 8TH Earl Spencer Centre for Young People Limited | Arts & recreation | 1997 |
| THE Canonbury Academy Limited | Real estate | 1991 |
| THE Capital Group Holdings Limited | Professional & scientific | 1995 |
| THE Caravan Company (MK) Ltd | Manufacturing | 2005 |
| THE Career Secret Ltd | Education | 2022 |
| THE Carmania Group Ltd | Wholesale & retail | 2016 |
| THE Cat & Wickets PUB Company Ltd. | Hospitality | 2016 |
| THE Centre at Mawsley Community Interest Company | Other services | 2006 |
| THE Chadlington Consultancy Limited | Professional & scientific | 1999 |
| THE Chaii Cafe Ltd | Hospitality | 2023 |
| THE Change Effect Group Limited | Professional & scientific | 2016 |
| THE Change Flock Ltd | Professional & scientific | 2025 |
| THE Charles Townsend Community Network CIC | Other services | 2024 |
| THE Chilli Jacket Ltd | Hospitality | 2026 |
| THE Chiltern Dental Centre Limited | Health & social care | 2007 |
| THE Chip Factory Limited | Hospitality | 2024 |
| THE Chrysalis Foundation | Professional & scientific | 2008 |
| THE Church Restaurant Ltd | Hospitality | 2020 |
| THE Civils Group Limited | Construction | 2022 |
| THE Cleaning Industry Foundation Community Interest Company | Extraterritorial | 2010 |
| THE Clear Finished UK Limited | Construction | 2017 |
| THE Climbing Method Ltd | Arts & recreation | 2025 |
| THE Club Chicken Ltd | Hospitality | 2025 |
| THE Clubhouse Kislingbury Ltd | Hospitality | 2026 |
| THE Coaching Brief Ltd | Professional & scientific | 2026 |
| THE Cock Enterprises Ltd | Hospitality | 2025 |
| THE Cocoa Basket Initiative Ltd | Extraterritorial | 2021 |
| THE Coffee Press Northampton Ltd | Hospitality | 2024 |
| THE Comedy Crate Ltd | Arts & recreation | 2017 |
| THE Commercial Feed & Shavings Company Limited | Manufacturing | 2023 |
| THE Community Court Yard Ltd | Education | 2011 |
| THE Compassionate Care Bureau Limited | Administrative & support | 2014 |
| THE Compassionate Home Care Limited | Health & social care | 2026 |
| THE Compliance Circle Limited | Professional & scientific | 2024 |
| THE Computer Doctors Limited | Information & communication | 2001 |
| THE Confederation of Trades and Industry Limited | Professional & scientific | 1991 |
| THE Conker Partnership Limited | Administrative & support | 2018 |
| THE Console+ Play Room Ltd | Hospitality | 2026 |
| THE Construction Group London Ltd | Construction | 2021 |
| THE Cool Classics LLP | | 2023 |
| THE Copper Kitchen Ltd | Hospitality | 2018 |
| THE Corner Shop - Kingsthorpe Ltd | Wholesale & retail | 2024 |
| THE Corner Shop - Rectory Farm Ltd | Wholesale & retail | 2025 |
| THE Corner Shop Group Ltd | Financial services | 2024 |
| THE Cosworth Foundation | Other services | 2026 |
| THE Courtyard Block "a" RTM Company Limited | Households | 2017 |
| THE Courtyard Block "B" RTM Company Limited | Households | 2017 |
| THE Cozy Corner Ltd | Real estate | 2026 |
| THE CPD Check Ltd | Education | 2024 |
| THE Crafting Hive Ltd | Arts & recreation | 2025 |
| THE Crick Baking Company Ltd | Manufacturing | 2021 |
| THE Crown Hardingstone Events Limited | Hospitality | 2024 |
| THE Cryohub Ltd | Health & social care | 2023 |
| THE Crysalys Foundation | Other services | 2017 |
| THE CSR Society Ltd | Professional & scientific | 2024 |
| THE Cube Disability Ltd | Health & social care | 2018 |
| THE Cube Future Living Ltd | Health & social care | 2018 |
| THE Cutting Lounge Ltd | Wholesale & retail | 2024 |
| THE DAD Club Ltd | Information & communication | 2020 |
| THE Daily Laugh Ltd | Information & communication | 2024 |
| THE Daily Wags Limited | Agriculture & fishing | 2026 |
| THE Darby Building Company Ltd. | Extraterritorial | 1999 |
| THE Daventry Estate Company Limited | Real estate | 2012 |
| THE Deakon Project Ltd | Real estate | 2019 |
| THE Deco Theatre Ltd | Arts & recreation | 2020 |
| THE Decor King Ltd | Other services | 2016 |
| THE Denbigh Court Management Company (Lutterworth) Limited | Administrative & support | 2005 |
| THE Dental Suite (Northants) Ltd | Health & social care | 2014 |
| THE Desh Street Ltd | Hospitality | 2024 |
| THE Design Bureau Ltd | Professional & scientific | 2025 |
| THE Despatch People Ltd | Transport & logistics | 2026 |
| THE Detail Studio Limited | Wholesale & retail | 2024 |
| THE Digital Gym Limited | Other services | 2018 |
| THE Diners Inn 5 Limited | Real estate | 2024 |
| THE Doddridge Centre Limited | Administrative & support | 2006 |
| THE Doodle PUB Company Ltd | Hospitality | 2025 |
| THE DUE Diligence Exchange Limited | Administrative & support | 2005 |
| THE Dunes (Hemsby) Management Limited | Households | 2023 |
| THE Duniya's Associates Limited | Health & social care | 2022 |
| THE EA 1977 Group Ltd | Real estate | 2024 |
| THE Eagles EYE Courier and Transport Limited | Transport & logistics | 2025 |