| Oxford Health Evaluations Limited | Professional & scientific | 2017 |
| Oxford Orthopaedic Services Limited | Health & social care | 2013 |
| Oxford Sport and Exercise Medicine Ltd. | Health & social care | 2011 |
| Oxford Sport, Exercise and Musculoskeletal Medicine Ltd | Health & social care | 2016 |
| Oxfordshire Construction Developments Limited | Construction | 2025 |
| Oxfordshire Fire & Security Limited | Administrative & support | 2022 |
| Periscope Accountancy Limited | Professional & scientific | 2020 |
| Periscope Financial Limited | Financial services | 2021 |
| Phillips Heating & Plumbing Limited | Construction | 2022 |
| Phoke Limited | Information & communication | 2020 |
| Pinnock Autos Limited | Wholesale & retail | 2026 |
| Positive Energy Flows Through ME Ltd | Manufacturing | 2023 |
| Prestige Valet Limited | Administrative & support | 2021 |
| R Fowler Electrical Contractor Limited | Manufacturing | 2026 |
| RAW Chutney Limited | Real estate | 2022 |
| Reel Creations Limited | Wholesale & retail | 2025 |
| Rideo Systems Ltd | Manufacturing | 2003 |
| Ridgway Services Limited | Administrative & support | 2011 |
| Rollo Dunford Wood Limited | Manufacturing | 2022 |
| RSR Events Limited | Arts & recreation | 2024 |
| SAC Property Limited | Real estate | 2024 |
| Sarah Phelan Consultancy Limited | Health & social care | 2023 |
| Scott Russell Architecture Ltd | Professional & scientific | 2022 |
| Ship.Energy Limited | Administrative & support | 2003 |
| Shipping Innovation Limited | Administrative & support | 2012 |
| Sierra Trading Ltd | Wholesale & retail | 2017 |
| SMH GAS Specialist Ltd | Construction | 2013 |
| SO Banbury Hair & Beauty Ltd | Other services | 2025 |
| Sofia Oxenham Ltd | Other services | 2021 |
| SSJ ST Holdings Ltd | Financial services | 2026 |
| Steve Willis Consolidated Risk Management Services Ltd | Financial services | 2018 |
| Storm Fireworks Limited | Arts & recreation | 2013 |
| Talk Write Limited | Professional & scientific | 2024 |
| Tea Holdings Limited | Real estate | 2024 |
| THE Business Spa Ltd | Education | 2021 |
| THE Clarity Space Consultancy Limited | Health & social care | 2023 |
| THE Client Perspective Consultancy Ltd | Professional & scientific | 2022 |
| THE Maltings (Bicester) Management Company Limited | Households | 2022 |
| THE Old Stables Studio Limited | Arts & recreation | 2016 |
| THE Seat Belt Repair Store Limited | Manufacturing | 2024 |
| THE Talent Bridge Inc LLP | | 2021 |
| THE Wheelwrights Partnership Ltd | Professional & scientific | 2021 |
| Tolstoy Dacha Limited | Wholesale & retail | 2025 |
| Troubadour Marketing Ltd | Professional & scientific | 2023 |
| UK Education Advisory Services Ltd | Education | 2011 |
| Union Habitat Limited | Real estate | 2016 |
| Union Ltd | Other services | 2002 |
| V4 North Limited | Professional & scientific | 2019 |
| Warwickshire Car & Commercials Ltd | Wholesale & retail | 2016 |
| Warwickshire Commercial Services Limited | Professional & scientific | 2023 |
| Webber Construction Limited | Construction | 2025 |
| West Coast Books Limited | Professional & scientific | 2005 |
| White Lion Limited | Financial services | 2017 |
| Wildflowers Montessori Ltd | Education | 2024 |
| Wise Solutions Heating & Plumbing Ltd | Construction | 2020 |
| Zenith Composites Ltd | Professional & scientific | 2026 |
| Zing Advisory Ltd | Professional & scientific | 2024 |
| ZMA Orthopaedics Ltd | Health & social care | 2019 |