| Engineaward Limited | Construction | 1995 |
| Equinox Corporate Trustee Limited | Financial services | 2019 |
| Ethos Candles Limited | Extraterritorial | 1970 |
| Euro Sales & Developments Ltd | Real estate | 1996 |
| Eurocater Equipment Network Limited | | 1989 |
| Excalibre Limited | Professional & scientific | 2005 |
| Exhilaro Ltd | Health & social care | 2007 |
| EXL Services Limited | Wholesale & retail | 1994 |
| F. Frith & Company Limited | Manufacturing | 1991 |
| F.G. Collier (Building) Limited | Construction | 2003 |
| F.R. DAW (Trowbridge) Limited | Wholesale & retail | 1980 |
| Favonius Limited | Professional & scientific | 2005 |
| Ferndale Insurance Services Limited | Financial services | 1992 |
| Ferris & Culverwell Financial Services Limited | Financial services | 2002 |
| Fibrefix Limited | Information & communication | 2019 |
| Field-Works Fundraising Limited | Professional & scientific | 2000 |
| Fieldtest Trading Limited | Wholesale & retail | 1988 |
| Finance Outsourced Limited | Professional & scientific | 2002 |
| First Greater Western Limited | Transport & logistics | 2004 |
| First Serve Tennis Courts Limited | Construction | 2006 |
| Firstalpha Ltd | Information & communication | 1999 |
| Fishtail Consulting Limited | Professional & scientific | 2004 |
| Five Rivers Eco Homes Limited | Real estate | 2001 |
| Flametex Fillings Limited | Professional & scientific | 1958 |
| Flex Limited | Information & communication | 1995 |
| Floortech (South West) Limited | Construction | 2007 |
| Flying Monk Limited | Professional & scientific | 2003 |
| Foray Motor Group Limited | Wholesale & retail | 1958 |
| Forest View Homes Limited | Construction | 2000 |
| Fortuity Consultancy Limited | Professional & scientific | 2023 |
| Francisca Amoah Ministries CIC | Arts & recreation | 2025 |
| French Farmers Limited | Professional & scientific | 1957 |
| French Fruit & Vegetable Farmers Limited | Professional & scientific | 1958 |
| Froehlich Fotovideo (U.K.) Limited | | 1986 |
| Fusco Builders Limited | Construction | 1999 |
| Future Perfect Communications Limited | Administrative & support | 2001 |
| G & J Gough (Builders) Limited | Construction | 2003 |
| G & M Building Contractors (Swindon) Limited | Construction | 2006 |
| G B Scaffolding Services Limited | Construction | 2005 |
| G Hazell Limited | Professional & scientific | 1957 |
| G. & K. (Sports) Limited | Transport & logistics | 1978 |
| G. G. Media Resources Limited | Information & communication | 2003 |
| G.P.H. Enterprises Ltd | Information & communication | 2005 |
| G.W. Slade & SON Limited | Construction | 2002 |
| Gainsborough Limited | Professional & scientific | 1934 |
| Galaxy Flooring Limited | Construction | 2004 |
| Gary Little DRY Lining Limited | Construction | 2006 |
| Gatekeeper Inns Ltd | Hospitality | 2006 |
| GB Timber Framing Limited | Construction | 2020 |
| GF5P Ltd | Real estate | 2021 |
| GF5P1 LLP | | 2021 |
| GF5P2 LLP | | 2021 |
| GG-207-722 Limited | Real estate | 2021 |
| GG-208-202 Limited | Real estate | 2021 |
| Giggles Swindon Limited | Wholesale & retail | 2004 |
| Gillcroft Limited | Wholesale & retail | 1990 |
| Gimson & Slater Limited | Professional & scientific | 1982 |
| Gjmultimedia Limited | Professional & scientific | 2007 |
| Glyn Jenkins Limited | Construction | 2004 |
| GMW Building Services Limited | Construction | 2005 |
| Golden Gate IFA Ltd | Professional & scientific | 2001 |
| Goldsworthy's Hairdressing Limited | Other services | 2007 |
| Gordon Gill Fine Turf Maintenance Limited | Arts & recreation | 2002 |
| Gothguild Limited | | 1988 |
| Graham and Kimber Limited | Construction | 1979 |
| Graham Jenkins Electrical Contractors Limited | Construction | 2007 |
| Great Western Cameras Limited | Wholesale & retail | 1982 |
| Green Dragon Enterprises Ltd | Hospitality | 2025 |
| Greenfields Gunmakers Limited | Manufacturing | 1997 |
| Greenlands Farm Stud LLP | | 2012 |
| Greenwood Direct Limited | Wholesale & retail | 2004 |
| Gresham Financial Limited | Financial services | 2002 |
| GU22 LLP | | 2021 |
| Guidemark Limited | Professional & scientific | 2006 |
| GUY Financial Limited | Professional & scientific | 2005 |
| H & G Decorating Contractors Limited | Construction | 2021 |
| H S Bowles | | 1974 |
| H. Backhouse (Baker Street) Limited | Arts & recreation | 1954 |
| Hamblen Properties Limited | Real estate | 2007 |
| Hamiltons Management Services Ltd. | Real estate | 1998 |
| Harbourside Properties Limited | Construction | 1999 |
| Hardy and Nerva Ltd | Real estate | 2010 |
| Harnham Press Limited | Manufacturing | 2003 |
| Hartham Farms Limited | Real estate | 1975 |
| Heat Lines (Southern) Ltd. | Transport & logistics | 1982 |
| Heaven Scent Incense Limited | Manufacturing | 1997 |
| Heavenonearthnow Ltd | Construction | 1998 |
| Heighway Holdings Ltd | Financial services | 2026 |
| Hempleman Investment Company Limited | Real estate | 1995 |
| Henleys Aggregates Ltd | | 2006 |
| Herberts Ltd | Other services | 2002 |
| Heritage Logistics LLP | | 2006 |
| Heytesbury Park Limited | Real estate | 1998 |
| Hightown Securities Limited | Financial services | 1978 |
| Highworth Financial Services Limited | Extraterritorial | 1986 |
| Hodson Honey Limited | Agriculture & fishing | 1999 |
| Holman Leasing Limited | Financial services | 2014 |
| Home Farm Enterprises Limited | Information & communication | 1998 |
| Home in One Limited | Extraterritorial | 2005 |
| Homemaker (South) Limited | Wholesale & retail | 2003 |