| EVO SEO Ltd | Information & communication | 2024 |
| Exalta Business Growth Limited | Other services | 2017 |
| Excellare (Dorset) Limited | Construction | 2014 |
| Excellare Limited | Construction | 2012 |
| Excelsia Consultancy Limited | Information & communication | 2019 |
| Experience the Air Way Limited | Administrative & support | 2017 |
| Expert Home Renovations Ltd | Construction | 2025 |
| Expressway Taxi Ltd | Transport & logistics | 2024 |
| FA E Lease & Sell Ltd | Wholesale & retail | 2026 |
| Fabio Oxford Properties Ltd | Real estate | 2025 |
| Fairdale House Management Company Limited | Households | 2005 |
| Fairfax Kitchen Limited | Hospitality | 2026 |
| Fairlawn Flats Limited | Households | 1965 |
| Family Valeting Services LLP | | 2023 |
| Fanatic Tanning Limited | Other services | 2016 |
| Farahani Property Group Ltd | Real estate | 2024 |
| Farz Capital Limited | Real estate | 2024 |
| Fast-Track Telecom Limited | Information & communication | 2009 |
| Feck I.T. Limited | Administrative & support | 2007 |
| Fern Hill Place (Faringdon) Management Limited | Households | 2008 |
| Ferry Court Management Company Limited | Professional & scientific | 1997 |
| Field View Lane Management Company Limited | Households | 2020 |
| Fieldacre Properties Limited | Real estate | 1999 |
| Filtrona Custom Moulding Limited | Professional & scientific | 1976 |
| Findmefitness Ltd | Information & communication | 2020 |
| Fine Persian Dishes Ltd | Hospitality | 2021 |
| Fino Olive OIL Ltd | Wholesale & retail | 2017 |
| First Light Fusion Limited | Professional & scientific | 2011 |
| Fivefigs Ltd | Wholesale & retail | 2019 |
| Fleet Fitness Ltd | Arts & recreation | 2019 |
| Flying Smart Limited | Wholesale & retail | 2000 |
| Flying Smart Maintenance Limited | Professional & scientific | 2024 |
| Folio Partners Enterprise Ltd | Wholesale & retail | 2025 |
| Foreign Dotcom Limited | Administrative & support | 2025 |
| Forge Garage Kidlington Limited | Wholesale & retail | 2024 |
| Fortescue UK Investment Management Limited | Professional & scientific | 2016 |
| Fortescue Zero Limited | Manufacturing | 2012 |
| Fosse Way Advisory Ltd | Professional & scientific | 2024 |
| Framework Synergies Ltd | Construction | 2014 |
| Frank Gray Kidlington (Management) Company Limited | Households | 2015 |
| Fraser Walker Associates Limited | Construction | 2005 |
| Fredi Property Constructions Ltd | Construction | 2022 |
| Frenchay Place Residents Association Limited | Households | 1998 |
| Fritillary Wellbeing Ltd | Health & social care | 2024 |
| Furnace Lakes Ltd | Arts & recreation | 2014 |
| Fusionx Group Ltd | Information & communication | 2022 |
| Futuremax Ltd | Hospitality | 2022 |
| G J MAC Developments Ltd | Financial services | 2024 |
| G PYE Holdings Limited | Construction | 2006 |
| G. P. Developments (Ascot) Limited | Other services | 2015 |
| Gadget FIX and Trade Ltd | Other services | 2023 |
| Gamegoer Limited | Other services | 2023 |
| Garbott Limited | Information & communication | 2015 |
| Garden Court (Banbury) Management Company Limited | Households | 2021 |
| Gardens Residents Association (Islip) Limited(The) | Real estate | 1981 |
| Garth Court (Bicester) Management Company Limited | Households | 2006 |
| GAS Heating & Service Ltd | Construction | 2011 |
| Gasket House Management Company Limited | Households | 2022 |
| Gawsworth Limited | Real estate | 2014 |
| GB Foodservice Ltd | Wholesale & retail | 2015 |
| GBR Performance Limited | Professional & scientific | 2018 |
| GCA Cleaning Services Limited | Administrative & support | 2026 |
| GCP Homes Ltd | Construction | 2024 |
| Gelateria Alfonso Ltd. | Manufacturing | 2017 |
| Geoquantize Limited | Professional & scientific | 2025 |
| George Alexander Developments Ltd | Financial services | 2012 |
| GET Outdoors Ltd | Arts & recreation | 2017 |
| Gillman and Soame UK Ltd | Professional & scientific | 2002 |
| GIR Ltd | Construction | 2020 |
| GJ Croker Ltd | Professional & scientific | 2025 |
| GJ Sports Ltd | Wholesale & retail | 2025 |
| Glacier Air Conditioning Ltd | Energy | 2021 |
| Glad-G Drylining Limited | Construction | 2021 |
| GLN Works Ltd | Manufacturing | 2025 |
| Global Aviation + Piper Parts Limited | Wholesale & retail | 2005 |
| Global Engage Limited | Professional & scientific | 2009 |
| Glyme Construction Ltd | Construction | 2024 |
| GM Accounting Solutions Ltd | Professional & scientific | 2026 |
| GMP Services Ltd | Transport & logistics | 2026 |
| Go People Productions Ltd | Arts & recreation | 2017 |
| Gold Filling Ltd | Professional & scientific | 2024 |
| Golden Phoenix Investors Ltd | Financial services | 2025 |
| Golden Quill Translation Ltd | Administrative & support | 2013 |
| Good Grub Monkey Ltd | Hospitality | 2014 |
| Goose and Gosling Restaurants Limited | Hospitality | 2006 |
| Gorman Civil Engineering & Groundworks Limited | Construction | 2006 |
| Gorzo Ltd | Construction | 2019 |
| Gosford ALL Blacks RFC | Arts & recreation | 2014 |
| Goulart Consulting Limited | Professional & scientific | 2025 |
| GP Psych Services Ltd | Health & social care | 2025 |
| GPS Sprayers Limited | Wholesale & retail | 1996 |
| Grabgrange Limited | Extraterritorial | 1980 |
| Grabride Limited | Extraterritorial | 1980 |
| Grace Leisure Property Ltd | Real estate | 2022 |
| Gracenote Designs Limited | Wholesale & retail | 2026 |
| Graduate Heights Residents Association Limited | Households | 2002 |
| Grand Property Solutions Ltd | Real estate | 2021 |
| Grand Union Marketing Ltd | Professional & scientific | 2004 |
| Grandterm Residents Management Limited | Households | 1987 |
| Grange Mill (Eynsham) Management Company Limited | Households | 2015 |