| Grasslands Dairy Limited | Wholesale & retail | 2019 |
| Grasslands Farming Limited | Agriculture & fishing | 2002 |
| Grassmats USA UK Limited | Manufacturing | 2020 |
| Graticule Personalisation Ltd | Information & communication | 2018 |
| Graveley Branch Holdings Ltd | Financial services | 2025 |
| Graveley Property Holdings Ltd | Financial services | 2025 |
| Gravil Services Limited | Extraterritorial | 2012 |
| Gravity Pilates Limited | Arts & recreation | 2024 |
| Grease Management Limited | Extraterritorial | 1999 |
| Great Enterprise Company Limited | Wholesale & retail | 2012 |
| Great Pro Limited | Real estate | 2026 |
| Greater Manchester Prop 1 Ltd | Real estate | 2017 |
| Greek Fast Foods Limited | Hospitality | 2024 |
| Green Box Interior Solutions Limited | Administrative & support | 2013 |
| Green Lion Metals Ltd | Wholesale & retail | 2026 |
| Green Margo Ltd | Wholesale & retail | 2020 |
| Greendale Family Homes Limited | Real estate | 2017 |
| Greendale Services Ltd | Agriculture & fishing | 2025 |
| Greenham Commercial Limited | Real estate | 2007 |
| Greentech Marketing Limited | Other services | 2010 |
| Greenwood Jones Marketing Consultants Ltd | Administrative & support | 2016 |
| Gregedits.Uk Ltd | Information & communication | 2023 |
| Grey Cookie Ltd | Wholesale & retail | 2015 |
| Greyalex Limited | Real estate | 2026 |
| Greybean Limited | Real estate | 2024 |
| Greybolt Limited | Real estate | 2025 |
| Greycape Limited | Real estate | 2021 |
| Greycotta Limited | Real estate | 2026 |
| Greyhide Limited | Real estate | 2025 |
| Greylady Limited | Real estate | 2025 |
| Greyseed Limited | Real estate | 2020 |
| Greysight Limited | Real estate | 2024 |
| Greyslow Limited | Real estate | 2025 |
| Greytine Limited | Real estate | 2025 |
| Greywood Limited | Real estate | 2019 |
| Grifen Sprinkler Solutions Limited | Manufacturing | 2006 |
| Griffin & Sutton Property Ltd | Real estate | 2023 |
| Griffin Accountants (Macclesfield) Ltd | Professional & scientific | 2022 |
| Griffin Accountants Limited | Professional & scientific | 2014 |
| Griffin Pension Solutions Ltd | Professional & scientific | 2021 |
| Griffin Prestige Ltd | Professional & scientific | 2025 |
| Griffin Wealth & Tax Management Limited | Professional & scientific | 2018 |
| Grigg Farms Limited | Agriculture & fishing | 1996 |
| Grimshaw Technical Services Limited | Construction | 2016 |
| Grinna Ltd | Wholesale & retail | 2026 |
| Ground Dog Dayz Ltd | Wholesale & retail | 2026 |
| Grounded Force Limited | Administrative & support | 2017 |
| Grounded in Freedom Limited | Arts & recreation | 2024 |
| Group 18 Consultancy Ltd | Professional & scientific | 2025 |
| Group Utilities Limited | Energy | 2013 |
| Groupro Services Ltd | Construction | 2018 |
| Grovefarmproperties Limited | Real estate | 2024 |
| GRW Financial Services Limited | Administrative & support | 2012 |
| GSH Macc Ltd | Hospitality | 2024 |
| Gskline Limited | Extraterritorial | 2005 |
| GTE Consultants Ltd | Other services | 2017 |
| Guardian ID Limited | Information & communication | 2024 |
| Gugma Ltd | Other services | 2021 |
| Gumpo Limited | Information & communication | 2009 |
| Gurkha Trade Limited | Hospitality | 2013 |
| Gusto Italiano Food Importers UK Limited | Hospitality | 2023 |
| Gutterrings of Cheshire Ltd | Administrative & support | 2025 |
| GV Properties and Letting Limited | Real estate | 2023 |
| GW Property Ltd | Real estate | 2019 |
| GWS (Northern) Limited | Administrative & support | 1999 |
| GWS Vapes Ltd | Wholesale & retail | 2017 |
| GXH Construction Ltd | Construction | 2022 |
| H & R Furniture Limited | Wholesale & retail | 2021 |
| H COE Consulting Ltd | Manufacturing | 2026 |
| H Green Tennisfit Limited | Education | 2013 |
| H R Bowyer Ltd | Education | 2023 |
| H&K Creations Ltd | Manufacturing | 2025 |
| H. Cumberbirch & SON Limited | Construction | 1949 |
| H.P.M.C.C. Limited | Professional & scientific | 2002 |
| H.W. Property Rentals Ltd | Real estate | 2021 |
| H3E Properties Limited | Real estate | 2013 |
| HA Solutions Group Limited | Financial services | 2026 |
| Habitat Heating Ltd | Construction | 2025 |
| Hackett Haulages Limited | Transport & logistics | 2019 |
| Hackney Creative Limited | Professional & scientific | 2023 |
| Haddogen Ltd | Professional & scientific | 2024 |
| Haddon Road RTM Company Limited | Households | 2014 |
| Hague Court RTM Company Limited | Households | 2022 |
| Hair BF Ltd | Other services | 2022 |
| Hair by Vanessa Limited | Other services | 2025 |
| Hairoholix Ltd | Other services | 2024 |
| Hale Surveys Ltd | Professional & scientific | 2019 |
| Hall Holmes & Co.Limited | Wholesale & retail | 1956 |
| Hall Moss Land LLP | | 2025 |
| Hall's Haulage & Excavation Limited | Wholesale & retail | 2015 |
| Hallam Developments Ltd | Real estate | 2001 |
| Hallam Stocktakers Limited | Professional & scientific | 2000 |
| Hallams Property Consultants LLP | | 2012 |
| Halliard Trust | Education | 2010 |
| Halligan Brickwork Ltd | Construction | 2024 |
| Hamer Way Limited | Professional & scientific | 2017 |
| Hamilton Barkley Developments Limited | Construction | 2020 |
| Hamilton Barkley Investments Limited | Real estate | 2023 |
| Hamnan Ltd | Real estate | 2023 |
| Hampson Jones Limited | Information & communication | 2012 |