| Gemini Adhesives Group Limited | Wholesale & retail | 2016 |
| Gemss Ltd | Manufacturing | 2018 |
| Genesis Hcare Private Limited | Health & social care | 2015 |
| Genesis Project Consultancy Ltd | Construction | 2019 |
| Gentle Farewell Vets Ltd | Professional & scientific | 2026 |
| GEO Real Estate 2025 Ltd | Real estate | 2025 |
| Geodera Ltd | Professional & scientific | 2025 |
| Geoff Webster Ltd | Manufacturing | 2016 |
| George Bonsall (Nottinghamshire) Ltd | Financial services | 2019 |
| George Food Services Ltd | Hospitality | 2025 |
| George-Obak's Medical Services Ltd | Health & social care | 2018 |
| Georges & Dora [G&D] Ltd | Transport & logistics | 2024 |
| Georges Contractors (Skegby) Limited | Construction | 1973 |
| Geostream Solutions Limited | Information & communication | 2001 |
| Gepa Automotive Ltd | Wholesale & retail | 2024 |
| GET IT Creative Ltd | Arts & recreation | 2025 |
| GET IT UP Construction Ltd | Construction | 2023 |
| Getthelabel.Com Limited | Professional & scientific | 2007 |
| GG 365 Ltd | Wholesale & retail | 2024 |
| Ggaw Investments Limited | Real estate | 2024 |
| GHA Solutions Ltd | Information & communication | 2016 |
| Ghanni Services Limited | Construction | 2025 |
| Gharib Express Lebanese Restaurant Ltd | Hospitality | 2021 |
| Gheiruars Ltd | Hospitality | 2021 |
| Gheorghe Construction Ltd | Construction | 2025 |
| Ghgw Holdings Limited | Financial services | 2021 |
| GHP Coaching Ltd | Arts & recreation | 2017 |
| Giant Blue Star Ltd | Wholesale & retail | 2025 |
| Gibson Bennett Industries Ltd | Manufacturing | 2025 |
| Gigi Trans Services Limited | Transport & logistics | 2019 |
| Gigi&Flory Corporation Ltd | Other services | 2021 |
| Gill's Nooze 'N' Booze Ltd | Wholesale & retail | 2014 |
| Gillian Bubb Consulting Limited | Administrative & support | 2023 |
| Ginajaz Ltd | Hospitality | 2025 |
| Giulio Fashion Limited | Wholesale & retail | 2009 |
| Giulio Limited | Wholesale & retail | 1982 |
| Giulio Woman Limited | Wholesale & retail | 2009 |
| GJB Construction&Developments Ltd | Construction | 2025 |
| GK Civils Limited | Construction | 2018 |
| GK Director Services Limited | Professional & scientific | 2011 |
| GK Motors Limited | Wholesale & retail | 2016 |
| GKM Mechanical Ltd | Construction | 2018 |
| GKW Properties Ltd | Real estate | 2025 |
| Gladstone Court Management Ltd | Households | 2005 |
| Glass House Accountants (Cheshire) Limited | Professional & scientific | 2017 |
| Glasshausbuild Ltd | Construction | 2025 |
| Glassoracle Limited | Wholesale & retail | 1998 |
| Glea Limited | Education | 2023 |
| Glenair (1972) Limited | Extraterritorial | 1972 |
| Glenair UK Limited | Manufacturing | 1975 |
| Glenic Solutions Limited | Information & communication | 2018 |
| Glenn Walker Haulage Limited | Transport & logistics | 2006 |
| Glenn's LOW Cost Tyres Limited | Wholesale & retail | 2003 |
| Gloah Lighting Ltd | Wholesale & retail | 2025 |
| Global Celebrity Events Limited | Administrative & support | 2018 |
| Global Custom Clearance Limited | Transport & logistics | 2013 |
| Global Football Pro (UK) Limited | Arts & recreation | 2017 |
| Global Investment Westminster Ltd | Real estate | 2011 |
| Global Travel-Consult Limited | Administrative & support | 2026 |
| Glossop Avenue 24/02/1970 Limited | Extraterritorial | 2014 |
| Glossy Valeting Centre Ltd | Wholesale & retail | 2025 |
| Glowyv Limited | Health & social care | 2022 |
| GLS Coating Services Ltd | Construction | 2025 |
| GLW Inspection Services Ltd | Professional & scientific | 2024 |
| Gmjc Trading Ltd | Wholesale & retail | 2026 |
| GMW Electrical & Property Maintenance Limited | Construction | 2017 |
| GNC Services Limited | Administrative & support | 2003 |
| Go 4 Gifts Online Ltd | Manufacturing | 2018 |
| Go Energy Assess Ltd | Construction | 2019 |
| GO24GOODS Limited | Wholesale & retail | 2024 |
| Gocruise Club Limited | Administrative & support | 2014 |
| Godhania Properties Limited | Real estate | 2010 |
| Gofood.Uk Online Ltd | Wholesale & retail | 2020 |
| Gold Barbers Ltd | Other services | 2024 |
| Gold Optimal Limited | Construction | 2015 |
| Goldbearuk Ltd | Wholesale & retail | 2019 |
| Goldcrest Estates and Developments Limited | Real estate | 2021 |
| Golden Hill Takeaway Limited | Hospitality | 2018 |
| Golden Phoenix Rising Ltd | Other services | 2024 |
| Goldfinch Associates Limited | Real estate | 2001 |
| Gono One One Limited | Health & social care | 2018 |
| Good HE Limited | Hospitality | 2020 |
| Good Stuff Cambs Ltd | Hospitality | 2017 |
| Goodbye MR Chips Limited | Wholesale & retail | 2020 |
| Goodland Consulting Ltd | Professional & scientific | 2025 |
| Goodward Construction Limited | Construction | 2004 |
| Goood Ltd | Manufacturing | 2025 |
| Goose Leisure Group Ltd | Arts & recreation | 2018 |
| Gordon & Rogers Properties Ltd | Real estate | 2025 |
| Goshen Houses Limited | Real estate | 2026 |
| GOT the Part Ltd | Wholesale & retail | 2018 |
| Gotham Projects Ltd | Information & communication | 2008 |
| Gough's Service & Repair Limited | Wholesale & retail | 2017 |
| Gozzard Technical Services Ltd | Professional & scientific | 2022 |
| Gpem Property Ltd | Information & communication | 2020 |
| Gpem Tech Two Ltd | Information & communication | 2021 |
| Gpem Technology Ltd | Information & communication | 2021 |
| Gpem Telecoms Ltd | Wholesale & retail | 2021 |
| GPT Building Solutions Ltd | Construction | 2025 |
| GR8 Vans Ltd | Wholesale & retail | 2023 |