| Transformacy Limited | Professional & scientific | 2019 |
| Translation Ventures Limited | Professional & scientific | 2012 |
| Trax Landscaping Limited | Administrative & support | 2018 |
| Trcw Management Services Limited | Real estate | 2019 |
| TRD Engineering Limited | Manufacturing | 2023 |
| TRI Beauty Ltd | Other services | 2025 |
| Trimble Holdings Limited | Real estate | 2021 |
| Trinity Rose Homecare Ltd | Health & social care | 2025 |
| Triple 7 Group Limited | Other services | 2018 |
| Triple Gandt Holdings Limited | Professional & scientific | 2022 |
| Trouble Studio Limited | Wholesale & retail | 2023 |
| TRU Office Ltd | Information & communication | 2005 |
| Trucert Limited | Professional & scientific | 2006 |
| Truck and Trailer Services (Wantage) Limited | Wholesale & retail | 2012 |
| Tula Publishing Limited | Information & communication | 2005 |
| Tunnel Ninja Coaching Ltd | Arts & recreation | 2021 |
| Turgrove Tech Limited | Information & communication | 2018 |
| Turnernet Ltd | Professional & scientific | 2025 |
| Turnkey Fitout Specialist Ltd | Construction | 2021 |
| Ubique Engr Ltd | Professional & scientific | 2026 |
| UK Christmas Trees Limited | Agriculture & fishing | 2006 |
| UK Serenity Home Care Limited | Health & social care | 2024 |
| UK Wedding Association Ltd | Professional & scientific | 2025 |
| UMN Support Trust | Professional & scientific | 2012 |
| Unbusy Co Ltd | Other services | 2023 |
| Unique Coachworks Limited | Manufacturing | 2010 |
| Unique Lets Limited | Real estate | 2009 |
| Unitaxi Limited | Transport & logistics | 2015 |
| Unitec Solutions Ltd | Information & communication | 2020 |
| United Mission to Nepal Worldwide Limited | Administrative & support | 2005 |
| Universe Financial Advice Ltd | Financial services | 2019 |
| Unmasked Health Ltd | Information & communication | 2026 |
| Untapped Travel Limited | Administrative & support | 2025 |
| Urbane Space Limited | Construction | 1997 |
| Ursa Polaris Ltd | Professional & scientific | 2022 |
| Utsaha Group Limited | Real estate | 2022 |
| V1 Flight Ltd | Manufacturing | 2018 |
| Vale Academy Trust | Education | 2011 |
| Vale and Downland Museum (Retail) Limited | Wholesale & retail | 1985 |
| Vale and Downland Museum (Wantage) | Arts & recreation | 2008 |
| Vale Hydrotherapy Limited | Agriculture & fishing | 2014 |
| Vale TKD Ltd | Arts & recreation | 2021 |
| Valuepath Consulting Ltd | Professional & scientific | 2024 |
| Vamped Medical Aesthetics Ltd | Health & social care | 2017 |
| Vandro Wealth Management Ltd | Administrative & support | 2016 |
| Vanmark Developments Ltd | Construction | 2019 |
| Vanmark Estate Planning Ltd | Professional & scientific | 2022 |
| Vanmark Group Ltd | Construction | 2016 |
| Vanmark Lettings & Management Ltd | Real estate | 2017 |
| Vasson Care Ltd | Administrative & support | 2022 |
| Veltrax Industrial Ltd | Construction | 2026 |
| Vertexgis Ltd | Information & communication | 2010 |
| Very Important Projects Ltd | Administrative & support | 2023 |
| Vgst Limited | Health & social care | 2020 |
| Vicfed Global Ltd | Health & social care | 2023 |
| VIM Developments Ltd | Construction | 2018 |
| Vintner RTM Company Limited | Households | 2009 |
| Virac Marketing Limited | Wholesale & retail | 1986 |
| VLS Consult Ltd | Professional & scientific | 2018 |
| VMS Cars Limited | Wholesale & retail | 2010 |
| VMS Custom Build Ltd | Construction | 2025 |
| VMT Holdings Ltd | Construction | 2023 |
| Voceitoga Ltd | Wholesale & retail | 2023 |
| Volantis Consulting Limited | Professional & scientific | 2009 |
| Vtech Systems Limited | Wholesale & retail | 2002 |
| VW Camper Catering Ltd | Hospitality | 2026 |
| W F T Consultancy Ltd | Administrative & support | 2025 |
| W R Jestico Accountancy Services Ltd | Professional & scientific | 2024 |
| W1NTERBOURNE Ltd | Wholesale & retail | 2022 |
| Waldex Limited | Health & social care | 2024 |
| Walfinch Ltd | Administrative & support | 2019 |
| Wallnut Investments Limited | Financial services | 2023 |
| Walnut Court Management Committee Limited | Households | 2016 |
| Wantage 4X4 Limited | Wholesale & retail | 2022 |
| Wantage AI Limited | Information & communication | 2025 |
| Wantage and District Community Transport Community Interest Company | Transport & logistics | 2023 |
| Wantage Care Charitable Trust | Health & social care | 2003 |
| Wantage Chamber of Commerce CIC | Professional & scientific | 2024 |
| Wantage Commercial Vehicle Repairs Limited | Wholesale & retail | 1962 |
| Wantage Gymnastics Centre Limited | Arts & recreation | 2015 |
| Wantage Kebab and Pizza Ltd | Hospitality | 2025 |
| Wantage Kebab Ltd | Hospitality | 2021 |
| Wantage Masonic Hall Limited | Other services | 1977 |
| Wantage Motor Group Limited | Wholesale & retail | 2021 |
| Wantage Motorist Centre Limited(The) | Wholesale & retail | 1978 |
| Wantage Osteopathic Practice Limited | Health & social care | 2015 |
| Wantage Podiatry and Chiropody Practice Ltd | Health & social care | 2021 |
| Wantage Silver Band | Arts & recreation | 2008 |
| Wantage Town Football Club Holdings Ltd | Arts & recreation | 2024 |
| Wantage Town Football Club Ltd | Arts & recreation | 2024 |
| Wantage Vale Windows Ltd. | Construction | 2002 |
| Ward Lewis Practice LLP | | 2005 |
| Warwickshire Homecare Services Ltd | Health & social care | 2025 |
| WASTE2TASTE C.I.C. | Hospitality | 2017 |
| Water Hygiene Centre Limited | Professional & scientific | 2009 |
| Watts Electrical Group Ltd | Construction | 2025 |
| Waymark Property Limited | Real estate | 2021 |
| WB Spirits Ltd | Hospitality | 2017 |
| WBS Group Limited | Professional & scientific | 2000 |
| WE Love Pets WGF Ltd | Other services | 2024 |