| Earthwalk Limited | Wholesale & retail | 2001 |
| Ebere Okeem Ltd | Administrative & support | 2016 |
| Edusites Ltd | Education | 2007 |
| EFM Traction Limited | Transport & logistics | 2006 |
| Ejanmay Limited | Professional & scientific | 2023 |
| EL Mungs Consulting Ltd | Professional & scientific | 2020 |
| Elan Chemists Limited | Health & social care | 2007 |
| Eldean Childcare Limited | Education | 2007 |
| Elegant IT Ltd | Information & communication | 2005 |
| Eleven Whitehall Limited | Real estate | 2000 |
| Emerald House Associates Limited | Professional & scientific | 1996 |
| Engine Creative Agency Limited | Information & communication | 1998 |
| Engird Limited | Extraterritorial | 1966 |
| Enhance Hair & Beauty Limited | Other services | 2002 |
| Equinox Training Solutions Limited | Information & communication | 1998 |
| Esmay Limited | Administrative & support | 2005 |
| Estate & Garden Services Ltd | Administrative & support | 2005 |
| Euro Towers Holdings Limited | Professional & scientific | 2005 |
| Eurus Limited | Professional & scientific | 2007 |
| Evolution Packaging Limited | Professional & scientific | 2006 |
| Excelsys (Olney) Limited | Information & communication | 1996 |
| Eyeline Supplies Limited | Construction | 1997 |
| F.J.W.Humphrey & SON Limited | Wholesale & retail | 1969 |
| F1000 Limited | Arts & recreation | 2008 |
| Fabtronic Sound and Lighting Limited | Professional & scientific | 2001 |
| Faccenda Group (South) Limited | Extraterritorial | 1961 |
| Factor 4 Developments Limited | Construction | 2005 |
| Fairfield Horse Boxes Limited | Manufacturing | 2003 |
| Falcon Innovations Limited | Construction | 2018 |
| Farndon Fields Holdings Limited | Financial services | 2024 |
| Feedback Systems Limited | Information & communication | 2006 |
| Fernbrook Builders Limited | Construction | 1984 |
| Fernbrook Holdings Limited | Construction | 2002 |
| Fernbrook Investments (UK) Limited | Administrative & support | 2002 |
| Finch Business Solutions (UK) Limited | Professional & scientific | 2006 |
| Fine Lines Limited | Construction | 2002 |
| First 4 Blinds Limited | Wholesale & retail | 2002 |
| First Product Limited | Other services | 1993 |
| Florigin Limited | Wholesale & retail | 1986 |
| Focuspace Limited | Construction | 2003 |
| Fotheringhay Farming Co. Limited | Extraterritorial | 1969 |
| Fowler Transport Ltd | Transport & logistics | 2006 |
| FOX Plant Limited | Wholesale & retail | 2007 |
| Foxton Court Management Limited | Real estate | 1990 |
| Francophile Holidays Limited | Professional & scientific | 1991 |
| Franklin Silencers Limited | Manufacturing | 1965 |
| Freemans Autologistics Limited | Transport & logistics | 2003 |
| Friflow Limited | Administrative & support | 2025 |
| Frobisher Living Limited | Other services | 2017 |
| FTC (UK) Ltd | Professional & scientific | 2006 |
| Future Networking Limited | Construction | 2005 |
| G & C Knight Limited | Manufacturing | 2003 |
| G & L Services Playgrounds Limited | Other services | 2003 |
| G & M Designs Limited | Information & communication | 2002 |
| G. Draper (Developments) Limited | Construction | 1966 |
| Gardner Builders Ltd | Construction | 2006 |
| Gargouse & Sons LLP | | 2025 |
| Garrett Builders Limited | Construction | 2000 |
| Gatrad Perpetual Investments Limited | Real estate | 1999 |
| George Wilson Management Limited | Wholesale & retail | 2003 |
| George's Lifechoice Homes Ltd | Other services | 2017 |
| Gianni Mediterranean Ltd | Hospitality | 2022 |
| Giant Bidco Limited | Extraterritorial | 2004 |
| GJ Interiors Ltd | Construction | 2015 |
| GKD Developments Limited | Extraterritorial | 2006 |
| Global Property Developments Limited | Construction | 1999 |
| Gold Track Driving Club Ltd | Arts & recreation | 2002 |
| Gold Track Motorsport Ltd | Professional & scientific | 2002 |
| Graham King Quantity Surveyors Limited | Professional & scientific | 2005 |
| Graham Morris Engineering Limited | Professional & scientific | 2003 |
| Great Central Plastics Limited | Manufacturing | 1998 |
| Great Glens Facility Limited | Health & social care | 2002 |
| Greatlets Limited | Real estate | 2008 |
| Greenbay Grounds Maintenance Ltd | Administrative & support | 2006 |
| Greenview Stores Ltd | Wholesale & retail | 2025 |
| Grosvenor Decorating Supplies Limited | Wholesale & retail | 2021 |
| Grove Architectural Engineering Services Limited | Construction | 2004 |
| Grovelake Limited | Professional & scientific | 2003 |
| GSK Solutions Limited | Information & communication | 1996 |
| H C Davis Transport (Belton) Limited | Transport & logistics | 1978 |
| Hair @ Number One Limited | Other services | 2006 |
| Hair by John (2002) Limited | Other services | 2002 |
| Handbuild Ltd | Administrative & support | 2012 |
| Happy Days Sunnyside Ltd | Health & social care | 2005 |
| Harrold Investments Limited | Real estate | 2006 |
| Hartwell Electrical Services Limited | Construction | 2005 |
| Hawkins Historic Limited | Wholesale & retail | 2004 |
| Hayeswood Landscapes Limited | Administrative & support | 2006 |
| Hayway Tool and Hardware Company Limited(The) | Wholesale & retail | 1982 |
| Headland Carpets Limited | Wholesale & retail | 2006 |
| Health-Wise Lifestyle Limited | Extraterritorial | 2005 |
| Health-Wise Products Limited | Extraterritorial | 2002 |
| Hedgehogs at Work Limited | Professional & scientific | 2003 |
| Hi-Bond Tapes Limited | Manufacturing | 2000 |
| Hi-Tech Trustees Limited | Financial services | 2023 |
| Higham Flat Roofing Limited | Construction | 1988 |
| Highfield Mews (Brackley) Limited | Real estate | 1998 |
| Hinton Holdings Limited | Real estate | 2005 |
| Hockridge Mortgages Limited | Financial services | 2005 |
| Hol-Taj Exports Limited | Wholesale & retail | 2007 |