| THE Theodore Group Ltd | Real estate | 2025 |
| THE Village Refill Limited | Wholesale & retail | 2020 |
| THE Whitebridge Clinic Limited | Health & social care | 2017 |
| THE Willows Management Company (Oxford) Limited | Households | 2024 |
| THE Woolpack Mews Management Company Limited | Households | 2014 |
| Theequineva Ltd | Administrative & support | 2025 |
| Three Squares Construction Ltd | Construction | 2009 |
| Thrupp Canoe and Kayak Hire Ltd | Arts & recreation | 2025 |
| Tidy BIO Ltd | Professional & scientific | 2024 |
| Tileright (Oxford) Limited | Wholesale & retail | 2002 |
| TIM Stimpson MBE Facilities Management and Events Consultancy Limited | Professional & scientific | 2026 |
| Timber Design Consultancy Ltd | Extraterritorial | 2016 |
| Timcke Corporate Advisers Limited | Financial services | 2018 |
| TMB Ventures UK Ltd | Real estate | 2018 |
| TMH Holdings Ltd | Financial services | 2021 |
| Toad Hall (Property) Ltd | Real estate | 2024 |
| Toad Hall Day Nursery (Bicester) Holdings Ltd | Financial services | 2023 |
| Toad Hall Day Nursery (Bicester) Ltd | Health & social care | 2011 |
| TOM Cross Heating & Renewables Limited | Construction | 2024 |
| Tonks Family Holdings Limited | Financial services | 2025 |
| Tori Taneka Accountancy Ltd | Professional & scientific | 2022 |
| Tori Taneka Ltd | Professional & scientific | 2018 |
| Totem Scaffolding Limited | Construction | 2003 |
| Toure International Limited | Administrative & support | 1995 |
| Trade Secret Cheshire Limited | Wholesale & retail | 2017 |
| Tradersbridge Limited | Information & communication | 2012 |
| Trano Limited | Professional & scientific | 2012 |
| Treasure World Ltd | Wholesale & retail | 2021 |
| Tree Spirit Ltd | Arts & recreation | 2013 |
| Triangle Land Ltd | Real estate | 2009 |
| Tribro Ltd. | Real estate | 2015 |
| Tridel Homes Ltd | Construction | 2024 |
| Trinity Properties (Oxford) Limited | Construction | 2021 |
| Triple J Aviation Engineering Ltd | Manufacturing | 2021 |
| Tripmart Limited | Administrative & support | 2025 |
| Triumph Fitness Limited | Arts & recreation | 2011 |
| Triumph Pilates Ltd | Other services | 2026 |
| Tsw-Television South West Limited | Professional & scientific | 2001 |
| Tube Bending Company Ltd | Manufacturing | 2024 |
| Tubes Scaffolding (Oxford) Limited | Construction | 2003 |
| Tudor Wood Estates Limited | Construction | 2002 |
| Tulip Property Investments Ltd | Real estate | 2019 |
| TVR Leasing Limited | Financial services | 2019 |
| Twenty Eighty Online Ltd | Information & communication | 2017 |
| Two Jokers Brewing Limited | Wholesale & retail | 2025 |
| Ubaglu Limited | Professional & scientific | 2023 |
| UK Cleaning Company Limited | Administrative & support | 2024 |
| UK Students Consultancy Ltd | Education | 2019 |
| Ukon Homes Limited | Wholesale & retail | 2020 |
| Ukon Ltd | Construction | 2017 |
| Uktronix Limited | Professional & scientific | 2019 |
| Unicorn Husbandry Ltd | Real estate | 2024 |
| Unifi Aviation UK, Ltd | Administrative & support | 2019 |
| Unique Healthcare Global Limited | Health & social care | 2017 |
| United Towers Education Consultancy Limited | Education | 2016 |
| United Towers International Ltd | Wholesale & retail | 2018 |
| Universal Phaetheon Ltd | Real estate | 2024 |
| Unuhi Ltd | Other services | 2018 |
| UP & Away Aviation Detailing Limited | Administrative & support | 2012 |
| Upper Meadow Management Limited | Households | 2004 |
| Urban Element Design Solutions Limited | Information & communication | 2003 |
| Urbanhaines Ltd | Wholesale & retail | 2026 |
| Urgent Expert Ltd | Professional & scientific | 2020 |
| Urns for Ashes Limited | Wholesale & retail | 2022 |
| Used Cars Oxford Ltd | Wholesale & retail | 2024 |
| V-Moto Ltd | Manufacturing | 2020 |
| Vale Accountants Oxford Ltd | Professional & scientific | 2018 |
| Valentia Property Holdings Limited | Financial services | 2019 |
| Van Horn Promotions Limited | Information & communication | 1998 |
| Vanessa Holden Driver Training Ltd | Education | 2012 |
| Vans for Bands Limited | Administrative & support | 2006 |
| Vecchione Limited | Financial services | 2026 |
| Vechar Global Limited | Wholesale & retail | 2021 |
| Vehicle Cooling Solutions Ltd | Other services | 2016 |
| Verlan BIO Ltd | Professional & scientific | 2025 |
| VF Solution Ltd | Administrative & support | 2025 |
| Vh&F Tanning Ltd | Other services | 2022 |
| Via.Ai Limited | Information & communication | 2023 |
| Vickers Supermarine Aircraft Ltd | Transport & logistics | 2015 |
| Victoria Court (Oxford) Limited | Households | 1991 |
| Victoria Gardens (Oxford) Management Limited | Households | 2006 |
| Victoria Gate Residents Company Limited | Households | 1997 |
| Vida Value Gyms Ltd | Arts & recreation | 2012 |
| Viewshot Limited | Real estate | 1986 |
| Village Barbers Kidlington Ltd | Other services | 2025 |
| Vincave Limited | Wholesale & retail | 2003 |
| Viorama Ltd | Information & communication | 2009 |
| Virdi Limited | Professional & scientific | 2020 |
| Vista Core Invest UK Ltd | Real estate | 2026 |
| Vitalslurp Limited | Extraterritorial | 2024 |
| Vitalstep Foot Care Ltd | Health & social care | 2025 |
| Vkdas Ltd | Wholesale & retail | 2025 |
| Vladdy Daddy Ltd | Professional & scientific | 2025 |
| VM Agritech Limited | Professional & scientific | 2014 |
| VMJ Courier Services Ltd | Transport & logistics | 2024 |
| VOB the Crescent Ltd | Construction | 2024 |
| Volare Aviation Limited | Transport & logistics | 2013 |
| Volare Engineering Limited | Transport & logistics | 2018 |
| Volare MRO Limited | Manufacturing | 2023 |
| Volare Parts Limited | Wholesale & retail | 2018 |