| Ganavni Ltd | Administrative & support | 2020 |
| Garf Solution Ltd | Manufacturing | 2018 |
| Gatehouse Living Ltd | Professional & scientific | 2021 |
| Gateway Property Group Ltd | Real estate | 2026 |
| Gavaghan & SON Contractors Limited | Construction | 2005 |
| Gavin Morgan Ltd | Wholesale & retail | 2024 |
| Gay's Creamery Limited | Wholesale & retail | 2004 |
| GDM Interiors Limited | Construction | 2005 |
| Generalco Limited | Public administration | 2003 |
| Genetree Limited | Professional & scientific | 2005 |
| GEOTREND2000 Ltd | Administrative & support | 2020 |
| Geraldine Coates Accounting Ltd | Professional & scientific | 2018 |
| Gerry & Co (Jewellers) Limited | Wholesale & retail | 2003 |
| Gethara Ltd | Transport & logistics | 2020 |
| GFB Ltd | Hospitality | 2020 |
| GFC (SW) Limited | Extraterritorial | 2021 |
| Gilbert Stephens Financial Services Limited | Financial services | 2003 |
| Gillard Motors Loddiswell Limited | Wholesale & retail | 2019 |
| Glebe Farm Equestrian Limited | Arts & recreation | 2020 |
| Glencrown Builders Limited | Wholesale & retail | 1983 |
| Glenn Bladon Limited | Professional & scientific | 2003 |
| Glow Barber Ltd | Other services | 2026 |
| Go Computers UK Limited | Other services | 2001 |
| Goldframe Limited | | 1989 |
| Golds Limited | Other services | 1999 |
| Goldsari Ltd | Transport & logistics | 2020 |
| Goldsmith Engineering PLC | Wholesale & retail | 1992 |
| Goodlife Garden Services Limited | Other services | 2007 |
| Goose Green Gate Limited | Administrative & support | 2007 |
| Gordon and Rumsby Ltd | Real estate | 2026 |
| Gorterr Limited | Hospitality | 2002 |
| Gostam Ltd | Manufacturing | 2018 |
| Gotovax Ltd | Transport & logistics | 2018 |
| GR Planning Consultancy Ltd | Professional & scientific | 1997 |
| Graham Crouch Limited | Wholesale & retail | 2003 |
| Graham Norwood Limited | Information & communication | 2003 |
| Grand Pier (Teignmouth) Limited | Arts & recreation | 1961 |
| Grandhalf Ltd | Transport & logistics | 2020 |
| Grandstand Events Limited | Professional & scientific | 1998 |
| Grason Investments Limited | Construction | 1987 |
| Gravelly Way Management Limited | Real estate | 1998 |
| Great Western Garages Limited | | 1983 |
| Green ASH Group Limited | Financial services | 2023 |
| Green Isle Shell Fisheries Limited | Agriculture & fishing | 2008 |
| Green Limited | Information & communication | 1999 |
| Greenacre Exmouth Management Limited | Households | 2000 |
| Greenbank Management Company Limited | Households | 1983 |
| Greenfield Engineering (Sheet Metal) Limited | Manufacturing | 1998 |
| Greenflow Ventures Limited | Construction | 2024 |
| Greensari Ltd | Transport & logistics | 2020 |
| Greetbox Ltd | Administrative & support | 2022 |
| Gremlin Works Limited | Information & communication | 2017 |
| Grenville Estates Limited | Real estate | 1978 |
| Grosvenor Secretarial (Wages) Limited | Administrative & support | 2007 |
| Grosvenor Secretarial Limited | Administrative & support | 1999 |
| Group Studio Limited | Professional & scientific | 2017 |
| Grovefree Ltd | Administrative & support | 2020 |
| GTS Academy Trust | Education | 2011 |
| Guest Engineering Services Limited | Professional & scientific | 1995 |
| Gunn Electrical Limited | Construction | 2022 |
| Gunns Gallery Limited | Wholesale & retail | 2003 |
| Guoliang Yang Limited | Wholesale & retail | 2025 |
| Guttervax Ltd | Administrative & support | 2009 |
| H & V Properties Limited | Extraterritorial | 2011 |
| H. Luscombe & SON Limited | Wholesale & retail | 1965 |
| H2 Environmental Limited | Agriculture & fishing | 2001 |
| Haley's Services Limited | Administrative & support | 2007 |
| Halls Limited | Real estate | 2002 |
| Hamilton Industries Limited | | 1983 |
| Hanad Ltd | Manufacturing | 2018 |
| Hanbury-Autogil Limited | Manufacturing | 2004 |
| Hanbury’S Licensed Takeaway Ltd | Hospitality | 2003 |
| Hannele Limited | Real estate | 1994 |
| Hara Krishna Ltd | Hospitality | 2020 |
| Harberton Cricket Club Limited | Education | 2017 |
| Harcombe Valley Care Limited | Health & social care | 2003 |
| Harlequin International Limited | Manufacturing | 1992 |
| Harlyn Investments Ltd | Real estate | 2021 |
| Harold Moore & SON (Builders) Limited | Real estate | 1956 |
| Harper's Home MIX Limited | Manufacturing | 1992 |
| Harrison's Garage (Totnes) Limited | Wholesale & retail | 1931 |
| Harrison-Lavers & Potburys Ltd | Real estate | 1997 |
| Harveys Haulage Limited | Transport & logistics | 2004 |
| Hatari Ltd | Manufacturing | 2021 |
| Hatshill Medical Services Limited | Health & social care | 2003 |
| Haworth Castings Limited | Manufacturing | 1967 |
| Haworth Machining Limited | Extraterritorial | 1960 |
| Haworth Romsey Limited | Professional & scientific | 2004 |
| Haydon Finch Construction Limited | Construction | 2020 |
| Hayward Decorative Stained Glass Limited | Manufacturing | 2002 |
| Hazelwood Caravans and Chalets Limited | Hospitality | 1965 |
| Hazelwood Holdings Limited | Professional & scientific | 2005 |
| Hazelwood Homes (Devon) Limited | Construction | 2022 |
| HC Mortgages Ltd | Financial services | 2023 |
| Head Office (South West) Limited | Arts & recreation | 2003 |
| Headlines Hairdressers Ltd | Other services | 2006 |
| Hearthfield Ltd | Real estate | 1963 |
| Heathcoat Fabrics Limited | Manufacturing | 1948 |
| Heathcoat Property Management Company Limited | Construction | 1969 |
| Heathcoat Trustee Company Limited | Financial services | 1991 |