| Fussels` Fine Foods Limited | Wholesale & retail | 2010 |
| G Corcoran Carpentry Ltd | Construction | 2022 |
| G M Tree Training Ltd | Education | 2014 |
| G T Lacy Holdings Limited | Professional & scientific | 2005 |
| G.T. Lacy Limited | Real estate | 1972 |
| GA Surfacing Limited | Construction | 2015 |
| Gadgets, Games & Gifts Ltd | Wholesale & retail | 2010 |
| Galactic Exchange Ltd | Wholesale & retail | 2023 |
| Game on the Musical Limited | Arts & recreation | 2019 |
| Ganilly (Scilly) Ltd | Households | 2019 |
| Garden Build by Design Ltd | Administrative & support | 2022 |
| Garden Cafe Frome Limited | Hospitality | 2012 |
| Gary Tugwell Plumbing & Heating Ltd | Construction | 2023 |
| Gask Property Group Ltd | Real estate | 2023 |
| Gatetech Ltd | Construction | 2022 |
| GD Carpentry Solutions Ltd | Construction | 2014 |
| Geekingitsimple Limited | Other services | 2015 |
| Genesis Advisory Ltd | Public administration | 2025 |
| Geoffrey Hunt Building Surveying Services Ltd | Construction | 2005 |
| George Botanicals Ltd | Extraterritorial | 2019 |
| GHW Associates Ltd | Real estate | 2016 |
| Gibson Engine Limited | Information & communication | 2012 |
| Gibson Frome Ltd | Real estate | 2025 |
| Givino Ltd | Wholesale & retail | 2022 |
| Gjabri Construction Limited | Construction | 2025 |
| Gjabri Properties Ltd | Households | 2024 |
| Glenavon Timber Services Ltd | Construction | 2017 |
| Global Border Group Ltd | Other services | 2020 |
| Globechat Media Limited | Information & communication | 2020 |
| Glove UP OR Shut UP Limited | Arts & recreation | 2025 |
| Glovers Way Management Limited | Households | 2022 |
| Gocopywriter Ltd | Other services | 2015 |
| Golden EGG Academy Limited | Information & communication | 2015 |
| Good Journey Network CIC | Administrative & support | 2016 |
| Goodbody Wellness Limited | Health & social care | 2019 |
| Goode and Handy Ltd | Construction | 2024 |
| Gooding Security Solutions Ltd | Administrative & support | 2025 |
| Goodman Surveying Ltd | Administrative & support | 2012 |
| Gordon & Reid Limited | Construction | 2025 |
| Gorehedge Apartments Management Ltd | Households | 2008 |
| Gorgon Stone Conservation Ltd | Construction | 2019 |
| Graham Walton Publishing Limited | Information & communication | 2015 |
| Grain Events Limited | Education | 2019 |
| Grain Hospitality Limited | Hospitality | 2015 |
| Grammi Limited | Health & social care | 2016 |
| Gramps and Co Limited | Real estate | 2008 |
| Grand Wall Productions Ltd | Information & communication | 2023 |
| Graphics by Design Limited | Information & communication | 1996 |
| Gray Safety Limited | Professional & scientific | 2026 |
| GRC Transport Ltd | Transport & logistics | 2009 |
| Great ELM Natural Water Ltd | Water & waste | 2025 |
| Great ELM Physick Garden Limited | Manufacturing | 2004 |
| Great ELM Utilities Limited | Water & waste | 2020 |
| Green & Gorgeous Limited | Administrative & support | 2006 |
| Green & Grainy Ltd | Hospitality | 2013 |
| Green Forest Installations Limited | Construction | 2013 |
| Green Forest Renewables Ltd. | Wholesale & retail | 2017 |
| Green JUG Consulting Ltd | Information & communication | 2024 |
| Green Planet Trading Ltd | Wholesale & retail | 2023 |
| Greenhill Grange Residential Home Limited | Health & social care | 2005 |
| Greenhow Global Ltd | Professional & scientific | 2023 |
| Greenwood Funerals Ltd | Other services | 2013 |
| Gregory Renovations Limited | Construction | 2012 |
| Greyrock Limited | Real estate | 2003 |
| Greythorne Ltd | Wholesale & retail | 2017 |
| Ground Tech South West Ltd | Construction | 2025 |
| Groutgleam Warminster Ltd | Administrative & support | 2023 |
| Grove Corporate Services UK Ltd | Administrative & support | 2021 |
| Gtall Consulting Ltd | Professional & scientific | 2026 |
| Gumption Ltd | Professional & scientific | 2012 |
| GW Acrylic Ltd | Wholesale & retail | 2014 |
| Haines and Associates Limited | Real estate | 2015 |
| Hair @ 28 Ltd | Other services | 2006 |
| Hair of Thrones Ltd | Other services | 2023 |
| Hancock`S Plumbing & Heating Limited | Administrative & support | 2006 |
| Hansell Hunter Ltd | Real estate | 2012 |
| Happysleepers Limited | Professional & scientific | 2015 |
| Hapsford Associates Limited | Professional & scientific | 2010 |
| Hapsford Construction Ltd | Construction | 2008 |
| Hapynow Ltd | Information & communication | 2025 |
| Harcourt Investments Ltd | Administrative & support | 2019 |
| Harling Holdings Limited | Real estate | 2018 |
| Harlows of Frome Ltd | Real estate | 2019 |
| Harrington Heating Services Limited | Construction | 2024 |
| Harrison Brookes Ltd | Construction | 2000 |
| Hart Developments (SW) Limited | Construction | 2010 |
| Hatfield & John Ltd | Real estate | 2003 |
| Haulrost Ltd | Administrative & support | 2018 |
| Hayden Conformitas Ltd | Professional & scientific | 2025 |
| Hayhurst Property Ltd | Real estate | 2019 |
| Hayler Jones Ltd | Construction | 2011 |
| Hayler Wason Ltd | Construction | 2020 |
| Hays Leisure Contracting Ltd | Professional & scientific | 2025 |
| Hazel Court Green Limited | Professional & scientific | 1999 |
| Heal Rewilding (Trading) Limited | Education | 2021 |
| Healing the Shadow Limited | Health & social care | 2018 |
| Health Professionals Ltd | Health & social care | 2025 |
| Heimr Consulting Ltd | Professional & scientific | 2023 |
| Hejgro Ltd | Manufacturing | 2023 |
| Hemford Brooks Ltd | Professional & scientific | 2018 |