| THE Musicke Companye Limited | Arts & recreation | 2001 |
| THE Old Cornmill Limited | Households | 1991 |
| THE Olde English Sweet Company Ltd | Wholesale & retail | 2025 |
| THE Open-Air Mission | Other services | 1937 |
| THE Oxford Chauffeurs Ltd | Transport & logistics | 2026 |
| THE Oxford Iron Company Ltd | Manufacturing | 2010 |
| THE Oxford Lighting Company Ltd | Wholesale & retail | 2022 |
| THE Oxford Puzzle Company Limited | Construction | 2013 |
| THE Oxfordshire Brewery and Beers Ltd | Hospitality | 2020 |
| THE Pamper Gift Company Limited | Extraterritorial | 2020 |
| THE Parlour Room (2020) Limited | Other services | 2020 |
| THE Phone Stall Ltd | Wholesale & retail | 2004 |
| THE Pipeline Industries Guild Limited | Other services | 1990 |
| THE Place Professional Ltd | Education | 2017 |
| THE Platform International (TPI) Limited | Other services | 2025 |
| THE Pool People Ltd | Construction | 2020 |
| THE Pope Francis Catholic Multi Academy Company | Education | 2014 |
| THE Prestige Cleaning Company Banbury Ltd | Administrative & support | 2022 |
| THE Rainwater GUY Limited | Construction | 2013 |
| THE Red House Management (Bodicote) RTM Limited | Households | 2011 |
| THE Royal Forestry Society | Agriculture & fishing | 2004 |
| THE Rumour Mill Creative Ltd | Professional & scientific | 2025 |
| THE S. Tapper Company Limited | Information & communication | 2000 |
| THE Savikar Collection Limited | Real estate | 2024 |
| THE School Photography Company Limited | Professional & scientific | 2005 |
| THE Senecio Press Limited | Manufacturing | 2013 |
| THE Simmering POT Limited | Extraterritorial | 2025 |
| THE Site Manager’S Guide Limited | Wholesale & retail | 2025 |
| THE Society of Share and Business Valuers Limited | Education | 2025 |
| THE Sound Reserve Ltd | Manufacturing | 2021 |
| THE Sourceror Ltd | Wholesale & retail | 2018 |
| THE Springbrook Partnership Limited | Professional & scientific | 2019 |
| THE Square (Banbury Village) Management Company Limited | Households | 1990 |
| THE Streets Raised ME Ltd | Wholesale & retail | 2026 |
| THE Sun Inn at Hook Norton Limited | Hospitality | 2017 |
| THE Sundae Girls Ltd | Hospitality | 2025 |
| THE Sunshine Centre | Health & social care | 2006 |
| THE Sustainable Manufacturing Company Limited | Manufacturing | 2023 |
| THE Sustenance Collective Ltd | Hospitality | 2019 |
| THE Tempest Two Ltd | Administrative & support | 2016 |
| THE Tibbetts Group Limited | Wholesale & retail | 2005 |
| THE Tiger Partnership Ltd | Arts & recreation | 2020 |
| THE Tile Studio (Banbury) Limited | Wholesale & retail | 2012 |
| THE Track House Limited | Wholesale & retail | 2002 |
| THE Trinley Estate Limited | Agriculture & fishing | 2014 |
| THE True Body Ltd | Other services | 2025 |
| THE Tube & Bracket Company Limited | Manufacturing | 2002 |
| THE Tudorbury Group Ltd | Professional & scientific | 2020 |
| THE Underfloor Heating Centre Limited | Extraterritorial | 2003 |
| THE V Lounge Wine Bar Ltd | Hospitality | 2023 |
| THE VFX House Ltd | Information & communication | 2023 |
| THE VW Camper Company Ltd | Wholesale & retail | 2005 |
| THE W Medispa Group Ltd | Other services | 2022 |
| THE Wellbeing Treehouse Ltd | Education | 2017 |
| THE Wheatsheaf (Banbury) Limited | Hospitality | 2021 |
| THE Whistling Kettle Ltd | Hospitality | 2024 |
| THE White Cleaning Company M&A Ltd | Administrative & support | 2018 |
| THE Will Writing People Ltd | Professional & scientific | 2026 |
| THE Willow on the Farm Nursery Ltd | Education | 2017 |
| THE Willows Banbury Limited | Arts & recreation | 2009 |
| THE Wolf CUB Collective Ltd | Hospitality | 2026 |
| THE Wright Hand MAN Ltd | Construction | 2026 |
| THE Wright Wash Ltd | Other services | 2023 |
| THE Young Racing Driver Academy Ltd | Education | 2019 |
| THE Youthwork Enterprise CIC | Education | 2025 |
| Thecotswoldwatch Co Ltd | Wholesale & retail | 2026 |
| Thecrm Ltd | Information & communication | 2021 |
| Thefatquarter Ltd | Wholesale & retail | 2020 |
| Thell Properties Ltd | Real estate | 2025 |
| Theon Design Limited | Manufacturing | 2016 |
| Thequietcoach Ltd | Information & communication | 2022 |
| Thermodynamic Nanotechnologies Limited | Information & communication | 2006 |
| Thermoplane Limited | Construction | 2012 |
| THG Carpentry & Construction Ltd | Construction | 2025 |
| Think Granite Limited | Wholesale & retail | 2013 |
| Thinking Buildings Limited | Professional & scientific | 2011 |
| Third Acre Consulting Limited | Professional & scientific | 2026 |
| Third State Pizza Company Limited | Hospitality | 2007 |
| Third State Pizza Holdings Limited | Financial services | 2017 |
| Thirst & Thistle Ltd | Hospitality | 2022 |
| Thoma's Hand Car Wash Ltd | Other services | 2024 |
| Thomas & Vint Limited | Agriculture & fishing | 2009 |
| Thomas and George Martin Violin Makers Limited | Manufacturing | 2008 |
| Thomas Morgan Holdings Limited | Real estate | 2022 |
| Thornhill House Finance Limited | Professional & scientific | 2016 |
| Thornhill House Publishing Ltd | Information & communication | 2026 |
| Thoroughbred Enterprise Investments Limited | Arts & recreation | 2014 |
| Thorpe Autos Limited | Wholesale & retail | 2013 |
| Thorpe Offices Limited | Real estate | 2022 |
| Thorpe Tyres Ltd | Wholesale & retail | 2025 |
| THR Services Limited | Health & social care | 2022 |
| Threading Bliss Bar Ltd | Other services | 2024 |
| Three & Co Properties Limited | Real estate | 2025 |
| Three Circle Law Ltd | Professional & scientific | 2010 |
| Three Shires Landscaping Limited | Administrative & support | 2017 |
| THREE60 Brands Limited | Other services | 2009 |
| Threefour Ltd | Professional & scientific | 2025 |
| Thulirali Ltd | Information & communication | 2025 |
| Thurne Investments Limited | Financial services | 2019 |
| Tibbetts Developments Ltd | Construction | 2013 |