| Erdmaennchen Limited | Real estate | 2019 |
| Euro Control Limited | Other services | 2022 |
| Eventsol Ltd | Administrative & support | 2023 |
| F.R. Fletcher and SON Limited | Manufacturing | 1983 |
| Factory 33 Limited | Manufacturing | 2016 |
| Fairlawn Consulting Limited | Professional & scientific | 2018 |
| Fairvue Ltd | Administrative & support | 2017 |
| Fast Forward Express Tours Limited | Information & communication | 1993 |
| Fayte Ltd | Information & communication | 2026 |
| FEW Inns Limited | Hospitality | 2003 |
| Fitness Habitat Group Training Ltd | Arts & recreation | 2020 |
| Fixey Dixey Ltd | Construction | 2021 |
| Flow Construction Design Ltd | Professional & scientific | 2021 |
| Fluffology Grooming Ltd | Other services | 2025 |
| FMT Property Limited | Real estate | 2025 |
| Folks Marketing Studio Limited | Professional & scientific | 2022 |
| Fontaine Property Ltd | Construction | 2024 |
| Foresight Property Maintenance Ltd | Construction | 2015 |
| Form Expert Ltd | Professional & scientific | 2025 |
| Fouches Properties Ltd | Real estate | 2025 |
| Fowler Hicks Landscapes Limited | Administrative & support | 2006 |
| FOX Audio Ltd | Arts & recreation | 2024 |
| Foxtail Garage Limited | Manufacturing | 2010 |
| FRC Sleep Service Ltd | Education | 2025 |
| Freestyle Martial Arts Faringdon Ltd | Arts & recreation | 2024 |
| Freestyle Martial Arts Havant Ltd | Education | 2022 |
| Frodo Limited | Wholesale & retail | 1996 |
| Fully Loaded Productions Limited | Real estate | 2012 |
| G B Spectrum Limited | Manufacturing | 1996 |
| G K S Oxford Ltd | Wholesale & retail | 2018 |
| G&T's Mobile Ltd | Hospitality | 2020 |
| Garbutt Property Ltd | Real estate | 2022 |
| GE GI Building Ltd | Construction | 2025 |
| Gearsprint Limited | Wholesale & retail | 2025 |
| Gemesys Ltd | Information & communication | 2022 |
| Georgiana V Ltd | Health & social care | 2022 |
| Gibbon Consulting Limited | Professional & scientific | 2022 |
| GMO Partnership Ltd | Professional & scientific | 2026 |
| GNZ Ltd | Extraterritorial | 2015 |
| Gome Aviation Ltd | Transport & logistics | 2015 |
| Gonifas Coaching Limited | Administrative & support | 2019 |
| Goose Joinery Ltd | Wholesale & retail | 2013 |
| Green Energy Oxfordshire Ltd | Professional & scientific | 2025 |
| Green RAY Consulting Ltd | Professional & scientific | 2014 |
| Guardian Sky Defence Ltd | Public administration | 2026 |
| Gulden Consultancy Limited | Wholesale & retail | 2014 |
| GWS Investments Ltd | Real estate | 2024 |
| H & H Landscaping Limited | Administrative & support | 2011 |
| H Toogood Training Ltd | Health & social care | 2022 |
| H&P Heating & Plumbing Limited | Manufacturing | 2015 |
| Halford Roofing & Property Maintenance Ltd | Construction | 2022 |
| Hanna Roslan Creative Ltd | Arts & recreation | 2022 |
| Harding Masonary Ltd | Construction | 2025 |
| Hayes Tipper Hire Oxford Ltd | Transport & logistics | 2023 |
| Hayward and Hounds Ltd | Wholesale & retail | 2024 |
| HBK Retail Ltd | Wholesale & retail | 2025 |
| Hedley House Eyecare Limited | Wholesale & retail | 2026 |
| Henderson Collections Limited | Extraterritorial | 2023 |
| Heritage Roofing Company (Oxford) Limited | Construction | 2004 |
| Hond-R Limited | Wholesale & retail | 2005 |
| Horwood Mortgage Solutions Ltd | Financial services | 2016 |
| Howitt's Installed Limited | Construction | 2012 |
| Howlett Carpentry & Joinery Ltd | Manufacturing | 2023 |
| HRN Optical Ltd | Health & social care | 2024 |
| Humble Bumble Ltd | Hospitality | 2023 |
| Hunnibee Designs Ltd | Professional & scientific | 2015 |
| HWS Floor Screeding Ltd | Construction | 2024 |
| IK Garage Ltd | Wholesale & retail | 2025 |
| Ilanga Marketing UK Ltd | Wholesale & retail | 2016 |
| IM UK Ltd | Information & communication | 2008 |
| Inclusive Care and Education Limited | Education | 2010 |
| Inspirational Sales Training Ltd | Professional & scientific | 2025 |
| Intelligence Services Limited | Professional & scientific | 1995 |
| Introgroup Properties Limited | Financial services | 1991 |
| Introproperties 2000 Limited | Professional & scientific | 1999 |
| Izvoras Ltd | Health & social care | 2021 |
| J & J Bowles Ltd | Construction | 2007 |
| J S Vehicle Rental Ltd | Administrative & support | 2004 |
| Jacqui Torrance Limited | Wholesale & retail | 2014 |
| James Gillies Consultancy Limited | Real estate | 2014 |
| James Gillies Contracting Limited | Real estate | 2017 |
| James Wilson Plumbing & Heating Limited | Construction | 2015 |
| JAY Druguta Ltd | Transport & logistics | 2026 |
| Jeremiah Services Ltd | Wholesale & retail | 2024 |
| Jeyan Limited | Wholesale & retail | 2025 |
| JM Plastering & Rendering Ltd | Construction | 2021 |
| Joinerytec Ltd | Manufacturing | 2023 |
| Jolly Foods (Oxon) Limited | Wholesale & retail | 2016 |
| JR Electrical Wholesale Ltd | Wholesale & retail | 2023 |
| Juliet Rose Marketing Limited | Financial services | 2020 |
| Jumpschool Ltd | Arts & recreation | 2014 |
| JUT Property Services Ltd | Hospitality | 2024 |
| JUT Services Ltd | Health & social care | 2022 |
| KAD Heating and Plumbing Ltd | Construction | 2023 |
| KAGR06 Limited | Households | 2020 |
| KAH Consult Ltd | Administrative & support | 2024 |
| Kahoo Clothing Limited | Wholesale & retail | 2024 |
| Kala's Campers Ltd | Administrative & support | 2025 |
| Katun Malik Traders Ltd | Hospitality | 2026 |
| Kaye Court Management Company Limited | Administrative & support | 2010 |