| Euroquartz Limited | Manufacturing | 1983 |
| Evad Domestic Appliances Limited | | 1984 |
| Evercreech Community Sports and Recreation Limited | Arts & recreation | 2005 |
| Eversleigh Management Company Ltd | Households | 1997 |
| Exact Electronics Limited | Water & waste | 1989 |
| Executive JET Repair Services Ltd | Manufacturing | 2016 |
| Exmoor Farmers Livestock Auctions Limited | Administrative & support | 1987 |
| Exmoor Hospitality Inns Limited | Hospitality | 1980 |
| Exmoor Livestock Auctions Ltd | Agriculture & fishing | 1997 |
| Exmoor Tourism CIC | Administrative & support | 2022 |
| Exmoor Tweed Limited | Wholesale & retail | 2018 |
| Exwin | | 1997 |
| F J Abbott & Co Limited | Construction | 2001 |
| F Stillwell & Sons Limited | Construction | 2004 |
| F.S.Fisher & Company Limited | Construction | 1939 |
| Fabwild Ltd | Real estate | 2023 |
| Fairfield Engineering Limited | Wholesale & retail | 2000 |
| Fairwater Garage (Taunton) Ltd | Wholesale & retail | 2006 |
| Fairyata Technology Co., Limited | Administrative & support | 2021 |
| Faith Properties Limited | Financial services | 2007 |
| Faithful Figures Limited | Manufacturing | 2007 |
| Falcon (UK) Ltd | Construction | 1992 |
| Faran Campers Ltd | Manufacturing | 2025 |
| Farmwheel Limited | Professional & scientific | 1995 |
| Fawkes Newco 2 Limited | Manufacturing | 2024 |
| Field Creative Ltd | Information & communication | 2022 |
| Fine Memorials Limited | Manufacturing | 2005 |
| Finefarm Limited | Agriculture & fishing | 1978 |
| Finefront Limited | Real estate | 1953 |
| Finesse Cleaning Limited | Administrative & support | 2002 |
| Finger on the Pulse Research Limited | Professional & scientific | 2007 |
| Finlay Consulting Limited | Professional & scientific | 2004 |
| Fire Safety & Security Limited | Public administration | 2003 |
| Five Ashes Building & Carpentry Limited | Construction | 2002 |
| Fivehead Garage Ltd | Wholesale & retail | 2015 |
| Forbel Limited | Professional & scientific | 1988 |
| Ford Risk Limited | Professional & scientific | 2002 |
| Foresite Services Limited | Manufacturing | 1999 |
| Formula Cars (South West) Limited | Wholesale & retail | 2001 |
| Formula Zero Ltd | Professional & scientific | 2003 |
| Fortyonetwo Management Company Limited | Households | 2004 |
| Fossil Design Limited | Professional & scientific | 2007 |
| Fotp Research Limited | Extraterritorial | 2007 |
| Foundry Garage Limited | Wholesale & retail | 1986 |
| Four Fifty Partnership Limited | Professional & scientific | 2004 |
| Four Seasons (Guildford) Limited | Real estate | 1986 |
| Four Seasons Sheepskins (Street) Limited | Wholesale & retail | 1978 |
| Fouts Cross Farm Cattery Ltd | Agriculture & fishing | 2017 |
| Frampton Holdings Limited | Professional & scientific | 1990 |
| Framptons Limited | Manufacturing | 1968 |
| France Chiropractic Limited | Health & social care | 2007 |
| Francis James Jewellers Limited | Wholesale & retail | 2003 |
| Fremol Limited | Professional & scientific | 2001 |
| Fringe Arts Bath Ltd | Arts & recreation | 2007 |
| Frog Events Limited | Administrative & support | 2012 |
| Frontlink Limited | Other services | 2000 |
| Froufrou and Thomas Limited | Professional & scientific | 2005 |
| G H Tyres Limited | Real estate | 2000 |
| G J Property Holdings Limited | Extraterritorial | 1995 |
| G Ritchie and Company Ltd | Professional & scientific | 2006 |
| G T Building Services Limited | Construction | 1999 |
| G&H Property Holdings Limited | Real estate | 2003 |
| G&H US Holdings Limited | Professional & scientific | 2007 |
| G.A. Sully & Sons Ltd | Construction | 2004 |
| G.D. Finance (Western) Limited | Financial services | 1978 |
| G.H. Quality Care Limited | Health & social care | 1995 |
| Gaffney-Kroese Electrical Supply Corp. | | 2016 |
| Gainsborough Group (Devizes) Limited | Real estate | 2025 |
| Gallery Jewellers of Wells Ltd | Wholesale & retail | 2006 |
| Garador Limited | Manufacturing | 1988 |
| Garland Chesterton Properties Limited | Real estate | 1994 |
| Gartell & SON Holdings Limited | Construction | 2021 |
| Garvey & Co Limited | Construction | 2012 |
| Gary Emery Electrical Services Limited | Construction | 2001 |
| Gentek Technologies Limited | Information & communication | 1998 |
| GEO Masters & Sons Limited | Construction | 2002 |
| George Bros (Builders) Limited | Construction | 2007 |
| George Bros (Properties) Limited | Construction | 1966 |
| Giftworks Limited | Wholesale & retail | 2001 |
| Giftworks Trustee Co Ltd | Financial services | 2025 |
| Gilbert Scott Mews Management Company Limited | Real estate | 2002 |
| Gilbie Roberts Limited | Professional & scientific | 2006 |
| Giles Motors Limited | Wholesale & retail | 2003 |
| Ginger Creations Limited | Arts & recreation | 2006 |
| GJE Electrical Services Limited | Construction | 2007 |
| Glastonbury Courtyard Limited | Real estate | 1992 |
| Glastonbury Reclamation Limited | Administrative & support | 1997 |
| Glentworth Letting Agencies Limited | Real estate | 2001 |
| Glover Bros Limited | Wholesale & retail | 1999 |
| Glowmime Limited | Extraterritorial | 1982 |
| GMO Construction Limited | Construction | 2006 |
| Gnilu Ltd | Arts & recreation | 2016 |
| Go-Sport Leisure Industries Limited | | 1984 |
| Goldabbey Management Limited | Construction | 2005 |
| Golden Glow Tanning Salon Ltd | Other services | 2024 |
| Golden Hill Pet Supplies Ltd | Wholesale & retail | 2010 |
| Gooch & Housego (Torquay) Limited | Manufacturing | 2002 |
| Gooch & Housego (UK) Limited | Manufacturing | 2006 |
| Gooch & Housego PLC | Manufacturing | 1953 |
| Gordon Edwards Limited | Professional & scientific | 2003 |