| Telvest Limited | Administrative & support | 2012 |
| Tembe Heem Limited | Real estate | 2026 |
| Tempera Health Clinic Ltd | Health & social care | 2026 |
| Tempo HQ Ltd | Arts & recreation | 2026 |
| Tenancy Capital Ltd | Real estate | 2026 |
| Tendylee Ltd | Health & social care | 2024 |
| Tenix Ltd | Information & communication | 2013 |
| Tention Stretch Tents Limited | Wholesale & retail | 2021 |
| Teoedan Transport Services Ltd | Transport & logistics | 2024 |
| Terakon Limited | Professional & scientific | 2014 |
| Terra Conexus Ltd | Wholesale & retail | 2024 |
| Terra Nova Consultancy Ltd | Information & communication | 2019 |
| Terra Property Developments Limited | Construction | 2025 |
| Terra Property Investments Ltd | Real estate | 2020 |
| Terramax Groundworks and Landscaping Ltd | Construction | 2024 |
| Test Valley Pest Control Limited | Administrative & support | 2010 |
| Test Valley Sporting Guns Limited | Wholesale & retail | 2003 |
| Testbourne Court Management Company Limited | Other services | 2005 |
| Teth Ltd | Wholesale & retail | 2026 |
| Tetrivis Ltd | Professional & scientific | 2015 |
| Teva Consultancy Solutions Limited | Professional & scientific | 2024 |
| Tewat Properties Limited | Real estate | 2025 |
| TFL Investments Limited | Information & communication | 2025 |
| TG Interactive Limited | Information & communication | 2025 |
| TGB Trading Ltd | Professional & scientific | 2022 |
| TGM Utilities Ltd | Construction | 2018 |
| TGS Fusion Imaging Ltd | Health & social care | 2017 |
| Th'Okco Ltd | Transport & logistics | 2015 |
| TH4U Ltd | Real estate | 2018 |
| Thaarikai Ltd | Information & communication | 2022 |
| Thaarikai Properties Ltd | Real estate | 2025 |
| Thacser Limited | Professional & scientific | 2024 |
| Thaenlae Ltd | Wholesale & retail | 2023 |
| Thames CAD Systems Ltd | Professional & scientific | 2011 |
| Thames Hampton Interiors Ltd | Construction | 2020 |
| Thames Valley Heating Ltd | Construction | 1977 |
| Thapa Electrical Services Ltd | Construction | 2021 |
| THE a Team Home Limited | Construction | 2018 |
| THE AI and ME Ltd | Education | 2025 |
| THE ALL in Party Limited | Other services | 2026 |
| THE Anvil Trust Ltd | Arts & recreation | 1992 |
| THE Baandd Ltd | Health & social care | 2018 |
| THE Barbershop Hackwood Road Ltd | Other services | 2003 |
| THE Barn (Wheel Farm) Limited | Real estate | 2022 |
| THE Barn Nursery School (Wootton) Ltd | Administrative & support | 2007 |
| THE Basingstoke Citizens Advice Bureau Limited | Health & social care | 1989 |
| THE Beauty Spot at the Courtyard Ltd | Extraterritorial | 2024 |
| THE Beauty Spot Basingstoke Limited | Other services | 2019 |
| THE Beran Family Investment Company Ltd | Financial services | 2024 |
| THE Besom in Basingstoke | Health & social care | 2005 |
| THE Black Friday Warehouse Ltd | Wholesale & retail | 2025 |
| THE Bluebell Clinic Ltd | Health & social care | 2025 |
| THE Boiler Bunny Ltd | Construction | 2017 |
| THE Business Software Centre Ltd | Information & communication | 1999 |
| THE Cabin Builders Hampshire Limited | Construction | 2025 |
| THE Cafe Project Basingstoke | Hospitality | 2012 |
| THE Carpet Trade Centre Limited | Wholesale & retail | 2014 |
| THE Cells (Chipping Norton) Ltd | Real estate | 2025 |
| THE Chapman Company Limited | Manufacturing | 1989 |
| THE Childcare Corporation Limited | Education | 2000 |
| THE Coach House (Chipping Norton) Ltd | Real estate | 2025 |
| THE Collaborators (UK) Ltd | Professional & scientific | 2013 |
| THE Conair Group Limited | Wholesale & retail | 1973 |
| THE Constables House (Chipping Norton) Ltd | Real estate | 2025 |
| THE Construction Sales Company Ltd | Extraterritorial | 2022 |
| THE Consulting Studio Ltd | Professional & scientific | 2023 |
| THE Cordon Ltd | Hospitality | 2023 |
| THE Cyber Bench Ltd | Administrative & support | 2021 |
| THE Data Practice Ltd | Information & communication | 2024 |
| THE Dog and Brush LLP | | 2025 |
| THE Eaves Group Ltd | Real estate | 2019 |
| THE Elementary Property Company Limited | Real estate | 2023 |
| THE Evergreen Aura Limited | Arts & recreation | 2025 |
| THE Evergreen Group Limited | Administrative & support | 1995 |
| THE Facialist Hampshire Ltd | Other services | 2024 |
| THE Faith Assemblies Global Ministries | Other services | 2022 |
| THE FAN Zone Ltd | Arts & recreation | 2023 |
| THE Fancey Company Limited | Construction | 2025 |
| THE First Eleven Limited | Other services | 2013 |
| THE Flower Preservation Studio Ltd | Arts & recreation | 2007 |
| THE Forge Development Company Limited | Financial services | 2006 |
| THE Gaming DEN Ltd | Wholesale & retail | 2019 |
| THE GAS Safety Shop Ltd | Extraterritorial | 2013 |
| THE George and Dragon Country PUB and Hotel Ltd | Hospitality | 2026 |
| THE Glass Centre (Basingstoke) Limited | Manufacturing | 2005 |
| THE Glowing OWL Group Ltd | Wholesale & retail | 2021 |
| THE Good Spot Ltd | Information & communication | 2018 |
| THE Graylingwell Community Management Company Limited | Households | 2010 |
| THE Green Room (Total Garden Care) Limited | Other services | 2005 |
| THE Green Room Hair Studios Limited | Other services | 2008 |
| THE Greys Residents Company Limited | Households | 1990 |
| THE Growth Collective Limited | Professional & scientific | 2015 |
| THE Hall Barbers Shop Ltd | Other services | 2025 |
| THE Hampshire Motor Group Limited | Wholesale & retail | 1996 |
| THE Hampshire Renovation Company Ltd | Administrative & support | 2015 |
| THE Handmade Cyclist Ltd | Wholesale & retail | 2016 |
| THE Happy Hvac Company Limited | Construction | 2025 |
| THE Haven Overton Ltd | Education | 2026 |
| THE Healing DEN Ltd | Health & social care | 2025 |
| THE Heritage Practice Limited | Professional & scientific | 2011 |