| THE Macular Disease Society | Health & social care | 1987 |
| THE Mcgrigor Corporation Limited | Professional & scientific | 2002 |
| THE Minxes Limited | Information & communication | 2005 |
| THE Mountcutter Limited | Wholesale & retail | 2008 |
| THE Old Stables Storage Ltd | Real estate | 2024 |
| THE Olive Shop Ltd | Hospitality | 2013 |
| THE Olivia Collective Ltd | Wholesale & retail | 2018 |
| THE Papworth and Enham Foundation | Health & social care | 1951 |
| THE Parker Gallery Limited | Wholesale & retail | 2009 |
| THE Platform Lift Company Limited | Manufacturing | 2001 |
| THE Play Project Consultants Ltd | Wholesale & retail | 2020 |
| THE Pool Lift Company Limited | Manufacturing | 2015 |
| THE Post Rooms Limited | Professional & scientific | 2026 |
| THE PR Room Limited | Professional & scientific | 2003 |
| THE Princess Royal Trust for Carers in Hampshire | Information & communication | 1994 |
| THE Production People Limited | Administrative & support | 2000 |
| THE Purbecks Management Company Limited | Households | 2014 |
| THE Reiki Association | Other services | 2000 |
| THE Right Laney Driving School Limited | Education | 2023 |
| THE River Test Distillery Limited | Manufacturing | 2017 |
| THE Rockhouse Foundation Ltd | Other services | 2016 |
| THE School Yard Abbots ANN Limited | Real estate | 2014 |
| THE Seed Safe Ltd | Information & communication | 2023 |
| THE Septic Company Limited | Water & waste | 2023 |
| THE Smokery at Church Paddock Limited | Arts & recreation | 2011 |
| THE Society for the Advancement of Buddhist Understanding | Other services | 1988 |
| THE Soho Shooting Company Limited | Agriculture & fishing | 2017 |
| THE Spirit Warehouse Ltd | Manufacturing | 2021 |
| THE ST. John and Red Cross Defence Medical Welfare Service | Health & social care | 2001 |
| THE SUB Hub Ltd | Wholesale & retail | 2023 |
| THE Swimming Pool and Allied Trades Association Limited | Other services | 2000 |
| THE Swing LAB Ltd | Education | 2024 |
| THE Three Bees Project CIC | Health & social care | 2023 |
| THE TLC Counselling Hub Ltd | Health & social care | 2019 |
| THE Travelling Cupcake Ltd | Hospitality | 2026 |
| THE Vending Machine Film Ltd | Information & communication | 2025 |
| THE Very Smart Home Company Limited | Information & communication | 2019 |
| THE Vine (Stockbridge) Limited | Real estate | 2017 |
| THE Wakkie INK Company Limited | Other services | 2011 |
| THE Well Kids Club Ltd | Manufacturing | 2025 |
| THE World's Experience Ltd | Construction | 2021 |
| THE Wyke Down PUB Ltd | Hospitality | 2023 |
| THE Yume Project Limited | Health & social care | 2011 |
| Thebigdogtrainer Ltd | Wholesale & retail | 2025 |
| Thecreativespectrum Ltd | Wholesale & retail | 2025 |
| Thefacedocs Ltd | Administrative & support | 2016 |
| Their After Ltd. | Wholesale & retail | 2023 |
| Thepledgecompany Ltd | Hospitality | 2022 |
| Thermsure UK Ltd | Professional & scientific | 2018 |
| Thicket Investments Ltd | Financial services | 2024 |
| Think Sigma Ltd | Professional & scientific | 2020 |
| Third Generation Holdings Limited | Financial services | 2019 |
| Thomas Roskilly Ltd | Other services | 1994 |
| Thorntons Transport Limited | Transport & logistics | 2023 |
| Three to HIT Ltd | Wholesale & retail | 2023 |
| Three Trees and a MAP PR Ltd | Professional & scientific | 2016 |
| Thrill and Grill Ltd | Hospitality | 2026 |
| Thrive in Motherhood Ltd | Other services | 2022 |
| Thrive Live CIC | Arts & recreation | 2025 |
| Thruxton Car Storage Limited | Transport & logistics | 2024 |
| Thruxton Circuit Limited | Real estate | 2023 |
| Thruxton Transport Limited | Transport & logistics | 2022 |
| Thunderfusion Ltd | Professional & scientific | 2025 |
| Thymeis Limited | Information & communication | 2026 |
| Tiberius Travel Ltd | Transport & logistics | 2026 |
| Tickling Trout Limited | Information & communication | 2008 |
| Tide 55 Ltd | Professional & scientific | 2020 |
| Tidworth Delight Ltd | Hospitality | 2024 |
| Tidy Touch Housekeeping Ltd | Other services | 2025 |
| Tiffany Home Products Limited | Wholesale & retail | 2016 |
| Tifo Sports Management Limited | Professional & scientific | 2025 |
| Tiger Trucks Limited | Manufacturing | 2002 |
| Tilbert Ltd | Information & communication | 2018 |
| Time to Bloom Bespoke Gardening Services Ltd | Administrative & support | 2023 |
| Timhaven Limited | Real estate | 2020 |
| Tini Care Ltd | Public administration | 2021 |
| Tinker's Hill Farm Limited | Real estate | 2018 |
| Tiny Living Ltd | Construction | 2023 |
| Tiny Town Café Ltd | Hospitality | 2023 |
| TIP Top Dinner Limited | Hospitality | 2025 |
| Tiptop Associates Limited | Real estate | 2019 |
| Tireless Ltd | Wholesale & retail | 2019 |
| Tisbury Consulting Limited | Professional & scientific | 2015 |
| Titches Ltd | Education | 2016 |
| Titi Property Ltd | Real estate | 2023 |
| TJW Auto Medic Ltd | Wholesale & retail | 2025 |
| TK Barber Services Ltd | Other services | 2020 |
| Tkhc Ltd | Professional & scientific | 2017 |
| Tkhc Realty Ltd | Real estate | 2024 |
| Tlpj Limited | Financial services | 2019 |
| TNT Bookkeeping Limited | Professional & scientific | 2018 |
| Tokona Ltd | Other services | 2023 |
| Tommy Gentleman Company Ltd | Professional & scientific | 2013 |
| Tooling Services Limited | Manufacturing | 2005 |
| Toooc Property Management Limited | Real estate | 2020 |
| Toothfairy-Agency Limited | Health & social care | 2025 |
| Toppers Andover Limited | Other services | 2018 |
| Torok Healthcare Limited | Health & social care | 2017 |
| Total Home Solutions Limited | Construction | 2009 |
| Total Intelligence Limited | Administrative & support | 2012 |