| Gleam Luster Ltd | Wholesale & retail | 2023 |
| Glenlorne Limited | Real estate | 2023 |
| Glitz Windows and Conservatories Ltd | Construction | 2022 |
| GLM Ghest Lloyd Limited | Professional & scientific | 2020 |
| Global Food Impex Ltd | Wholesale & retail | 2025 |
| GM Stays Ltd | Real estate | 2022 |
| Gmbj Ltd | Construction | 2020 |
| Gnarly Monsters Ltd | Wholesale & retail | 2025 |
| Go Ahead Driving Ltd | Wholesale & retail | 2025 |
| Goat Property & Cleaning Services Ltd | Administrative & support | 2023 |
| Goezh Mediterranean Restaurant Ltd | Hospitality | 2025 |
| Gold Dragon Limited | Hospitality | 2021 |
| Gold Pro Limited | Professional & scientific | 2024 |
| Goldarch Limited | Real estate | 1984 |
| Goldbrook International Limited | Wholesale & retail | 2006 |
| Golden Leaves International Ltd | Other services | 2009 |
| Golden Leaves Limited | Other services | 1994 |
| Goliath Cromer 2 Ltd | Real estate | 2025 |
| Goliath Cromer Ltd | Construction | 2019 |
| Goliath Developments Limited | Construction | 2012 |
| Goose Heating Services Limited | Construction | 2025 |
| Gowhip Ltd | Administrative & support | 2025 |
| Gps&Homes Ltd | Real estate | 2026 |
| Grace Dental Clinics Limited | Health & social care | 2025 |
| Gracehavencare Limited | Health & social care | 2025 |
| Graculus Limited | Administrative & support | 2017 |
| Gradinaru UK Civils Ltd | Construction | 2020 |
| Grandhire Limited | Administrative & support | 2024 |
| Grange Road Freeholders Limited | Real estate | 2002 |
| Grantley (Catford) Limited | Real estate | 2003 |
| Grantley Properties (Manchester) Limited | Real estate | 2005 |
| Grantley Properties Ltd | Real estate | 1997 |
| Graphene Group Ltd | Construction | 2020 |
| Green Chillies Properties Limited | Real estate | 2023 |
| Green Home Property Developments Ltd | Real estate | 2016 |
| Greene Enterprises Ltd | Real estate | 2024 |
| Grey Stripe Executive Car Service Ltd | Transport & logistics | 2013 |
| Grit and Glam Limited | Wholesale & retail | 2025 |
| Grizzly Bear Tree Care Limited | Administrative & support | 2026 |
| Group J & J Ltd | Other services | 2011 |
| Grudgebone Limited | Information & communication | 2007 |
| GSM & P Consulting Ltd | Health & social care | 2019 |
| Guardworth Installations Limited | Construction | 2010 |
| GWD Property Services Limited | Construction | 2017 |
| GY Golden Ltd | Wholesale & retail | 2024 |
| H F S International Limited | Administrative & support | 2004 |
| H Z Textiles Limited | Wholesale & retail | 2023 |
| Hadley Heights Ltd | Construction | 2022 |
| Hamble Marine Limited | Professional & scientific | 2001 |
| Hamblen Limited | Professional & scientific | 2015 |
| Hammond Building Services Limited | Construction | 2003 |
| Hanas Tech Limited | Information & communication | 2019 |
| Happy and Comfy Home Ltd | Financial services | 2022 |
| Happy Swan Express Limited | Hospitality | 2026 |
| Harcroft Consulting Limited | Construction | 2024 |
| Harty Homecare Services Ltd | Health & social care | 2018 |
| Harty Investment Group Ltd | Construction | 2024 |
| Harvest of the Seas Limited | Wholesale & retail | 2021 |
| Hawkeye Panacea Limited | Professional & scientific | 2023 |
| Headstart Contractors Limited | Construction | 2023 |
| Hearty Homes Ltd | Real estate | 2019 |
| Heathervfx Ltd | Information & communication | 2019 |
| Heavenly Abode Ltd | Construction | 2025 |
| Helen Oliver Consulting Ltd | Professional & scientific | 2025 |
| HEM ENG. Ltd | Construction | 2026 |
| Hemal Limited | Hospitality | 2017 |
| Hennis Holidays Ltd | Administrative & support | 2025 |
| Hennis Limited | Administrative & support | 2017 |
| Henry Family Holdings Ltd | Real estate | 2020 |
| Henry Family Holdings Residential Ltd | Real estate | 2022 |
| Herdlab Nutrition Ltd | Wholesale & retail | 2026 |
| Heritage Decorating Services Limited | Administrative & support | 2015 |
| Hexline Limited | Real estate | 1998 |
| Heysham Holdings Ltd | Real estate | 2025 |
| Heyuguys Limited | Information & communication | 2010 |
| HI Tech Discoveries Limited | Manufacturing | 2013 |
| Hidden Depths Learning Solutions Limited | Professional & scientific | 2014 |
| High Oaks Close Management Company Limited | Administrative & support | 2011 |
| High Oaks Media Ltd | Professional & scientific | 2019 |
| High-Gene.Com Ltd | Administrative & support | 2022 |
| Highgrove Tenants Association Limited | Households | 2000 |
| Highoaks Associates Limited | Other services | 2020 |
| Highton Holdings Ltd | Financial services | 2026 |
| Hill House (Croydon) Limited | Real estate | 2012 |
| Hill Walton Limited | Real estate | 1973 |
| Hillcrest Parade (Management) Limited | Professional & scientific | 1984 |
| Hills ARE Live Ltd | Construction | 2020 |
| HNW Landscapes Ltd | Administrative & support | 2025 |
| Hobart Associates Limited | Real estate | 2006 |
| Hobart Properties Limited | Real estate | 2015 |
| Hodge Engineering Ltd | Manufacturing | 2025 |
| Hodge Trading Homes Ltd | Real estate | 2025 |
| Holah Travel Ltd | Administrative & support | 2021 |
| Hollymeoak Management Limited | Households | 2025 |
| Home Heating Services Ltd | Construction | 2022 |
| Homeez Ltd | Construction | 2020 |
| Hooley News Agent Ltd | Wholesale & retail | 2017 |
| Hoptek Catering Limited | Hospitality | 2026 |
| Hot Bargain London Limited | Wholesale & retail | 2021 |
| House of CK Ltd | Wholesale & retail | 2026 |