| THE Cake Hole Limited | Wholesale & retail | 2004 |
| THE Campaign Works Limited | Professional & scientific | 1996 |
| THE Car Agents Limited | Wholesale & retail | 2010 |
| THE Cardona & SON Spirit Co. Limited | Wholesale & retail | 2020 |
| THE Castle (Porlock) Limited | Hospitality | 2008 |
| THE Chair Collaborative Limited | Other services | 2025 |
| THE Chartridge Conference Company Limited | Hospitality | 1996 |
| THE Chartridge Regency Limited | Hospitality | 2015 |
| THE Cheeky Company Limited | Information & communication | 1991 |
| THE Chilterns (Hitchin) Owners Residents Association Limited | Households | 2011 |
| THE Chimney Piece Restoration Co Ltd | Wholesale & retail | 2025 |
| THE Clarke Architectural and Design Consultancy Limited | Administrative & support | 2005 |
| THE Class a Consultancy Limited | Administrative & support | 2003 |
| THE Cloth Bums CIC | Professional & scientific | 2020 |
| THE Clothing LAB Ltd | Wholesale & retail | 2024 |
| THE Concrete Camper Company Limited | Professional & scientific | 2020 |
| THE Corn Exchange Company Limited | Agriculture & fishing | 1987 |
| THE Costumier Limited | Wholesale & retail | 2013 |
| THE Courtyard Hertfordshire Ltd | Hospitality | 2025 |
| THE Courtyard Lodge Ltd | Hospitality | 2025 |
| THE Culture Centre Limited | Arts & recreation | 2025 |
| THE Cycle Agents Limited | Wholesale & retail | 2026 |
| THE DAD Shop Ltd | Wholesale & retail | 2025 |
| THE Dali Group Limited | Wholesale & retail | 2022 |
| THE Digital Awards Company Ltd | Administrative & support | 2023 |
| THE Dream Bean Cafe Limited | Hospitality | 2023 |
| THE Eaton Private Office Limited | Administrative & support | 2020 |
| THE EP Plan Limited | Financial services | 2015 |
| THE Evaluaite Hub Ltd | Information & communication | 2026 |
| THE Factory Playhouse Limited | Arts & recreation | 2015 |
| THE Farm Fund 1 Limited Liability Partnership | | 2008 |
| THE Ferraro Method Ltd | Arts & recreation | 2024 |
| THE Fleet Cruising Club Limited | Other services | 1999 |
| THE Fleetville Emporium Ltd | Wholesale & retail | 2019 |
| THE Globe Public House Limited | Hospitality | 2024 |
| THE Goalkeeper Club Ltd | Wholesale & retail | 2025 |
| THE Granta Academy Limited | Administrative & support | 2017 |
| THE Green MAN Great Wymondley Ltd | Hospitality | 2023 |
| THE Green Mumma Limited | Wholesale & retail | 2021 |
| THE Groom Room Limited | Other services | 2002 |
| THE Grove Shephall Green Management Company Limited | Households | 2010 |
| THE Guidewire CIC | Education | 2020 |
| THE Hair Shop (Hitchin) Ltd | Other services | 2008 |
| THE Head Office (Stevenage) Limited | Other services | 2009 |
| THE Hitchin Cafe Ltd | Hospitality | 2017 |
| THE Hitchin Group Ltd | Information & communication | 2007 |
| THE Hitchin Hamper Limited | Extraterritorial | 2020 |
| THE Hitchin Mortgage Company Ltd | Financial services | 2025 |
| THE Hitchin Wine Company Limited | Wholesale & retail | 2012 |
| THE Home Grown Network Ltd | Information & communication | 2025 |
| THE Honeybee MAN Limited | Manufacturing | 2019 |
| THE Hopium LAB Ltd | Information & communication | 2025 |
| THE Horse Diva Limited | Wholesale & retail | 2007 |
| THE Industry Portal Ltd | Education | 2025 |
| THE Inheritance Planning Company Limited | Other services | 1990 |
| THE IT Point Limited | Information & communication | 2013 |
| THE Jolly Savage Limited | Wholesale & retail | 2009 |
| THE Lancasters Management Limited | Households | 2010 |
| THE Laser Lady Limited | Other services | 2019 |
| THE Laundry Co Stotfold Limited | Other services | 2024 |
| THE Lead People Limited | Administrative & support | 2018 |
| THE Leisure Media Company Limited | Information & communication | 1987 |
| THE Letchworth Garden Company Ltd | Administrative & support | 2022 |
| THE Letting Quarter Ltd | Extraterritorial | 2023 |
| THE Life Practice Ltd | Health & social care | 2007 |
| THE Little Nesting Company Limited | Other services | 2023 |
| THE Little Orchard PRE School Limited | Education | 2023 |
| THE Little OWL House Ltd | Health & social care | 2024 |
| THE London Scenic Crew Limited | Arts & recreation | 2018 |
| THE Lorana Sullivan UK Foundation | Education | 1999 |
| THE Malay Courtyard Ltd | Hospitality | 2025 |
| THE Management Centre Learning Ltd | Education | 2018 |
| THE Market Coffee House Limited | Hospitality | 2003 |
| THE Military Intelligence Bunker Limited | Extraterritorial | 2022 |
| THE Mobile Store Limited | Wholesale & retail | 2003 |
| THE Muse Club Limited | Information & communication | 2023 |
| THE Next Page Ltd | Wholesale & retail | 2021 |
| THE North Norfolk Trading Company Limited | Extraterritorial | 2003 |
| THE Oaks Consultancy Services Ltd | Administrative & support | 2025 |
| THE Old Bakery Maintenance Company Limited | Households | 1989 |
| THE Old George Ickleford Limited | Hospitality | 2014 |
| THE Oliverse Limited | Administrative & support | 2026 |
| THE Online Nutrition Clinic Ltd | Health & social care | 2022 |
| THE Organic Candle Company Limited | Manufacturing | 2024 |
| THE Osney Arms Guest House Limited | Hospitality | 2015 |
| THE Paddock Pool LLP | | 2019 |
| THE Pathway Hypnotherapy Rooms Limited | Health & social care | 2020 |
| THE Pathwaystill Community Interest Company | Health & social care | 2022 |
| THE Philanthropy Agency Limited | Administrative & support | 2013 |
| THE Picture House (Worldwide) Limited | Professional & scientific | 2000 |
| THE Pilates Space Studio Ltd | Arts & recreation | 2023 |
| THE Plume of Feathers Ickleford Limited | Hospitality | 2021 |
| THE PMU School Ltd | Education | 2022 |
| THE Portmill Partnership LLP | | 2008 |
| THE Practice Roomz Limited | Information & communication | 2012 |
| THE Practice Roomz Live Limited | Information & communication | 2013 |
| THE PRE LAB Ltd | Wholesale & retail | 2026 |
| THE Primus Network Ltd | Professional & scientific | 2026 |
| THE Probate Valuer Ltd | Other services | 2023 |
| THE Property Consultancy Group Limited | Other services | 2020 |