| Garage Doors Central (HW) Limited | Wholesale & retail | 2010 |
| Gard Constructions Ltd | Construction | 2021 |
| Garden Matters (Solutions) Ltd | Administrative & support | 2017 |
| Garden of Sofia Ltd | Manufacturing | 2026 |
| Gardener Walk Management Company Limited | Households | 2006 |
| Garlin Consulting Limited | Professional & scientific | 2002 |
| Garner Consulting Limited | Information & communication | 2001 |
| Garner Enterprises Ltd | Real estate | 2022 |
| Garr Tool - UK Limited | Administrative & support | 2014 |
| Garsington Opera Productions Limited | Arts & recreation | 2014 |
| Gary Hills Ltd | Construction | 2018 |
| Gary Macara Ltd | Professional & scientific | 2024 |
| Gary Rivera Ltd | Education | 2016 |
| GAS FLO Heating Ltd | Construction | 2013 |
| GAS Genius Limited | Construction | 2024 |
| GAS Heating and Air CON Ltd | Construction | 2025 |
| Gaskins Advisory Limited | Financial services | 2016 |
| Gasprom Ltd | Construction | 2024 |
| Gasworx Plumbing & Heating Services Ltd | Construction | 2020 |
| GAT Engineering Consultant Ltd | Professional & scientific | 2017 |
| Gateway Barbers Ltd | Other services | 2012 |
| Gateway Forecourt Management Ltd | Wholesale & retail | 2025 |
| Gateway Global Logistics Ltd | Transport & logistics | 2024 |
| Gatto Nero Consulting Ltd. | Professional & scientific | 2015 |
| Gaucho Brazilian Fast Food Ltd | Hospitality | 2025 |
| Gaughan Induction Furnace Services Ltd | Manufacturing | 2010 |
| Gavincrisell Ltd | Hospitality | 2016 |
| GB Foods Wholesale Ltd | Wholesale & retail | 2021 |
| GBC Electrical Contractors Ltd | Energy | 2020 |
| GBJ Property Management Ltd | Real estate | 2024 |
| GC Logistics Ltd | Transport & logistics | 2019 |
| GC Resources Limited | Professional & scientific | 2016 |
| GCA Building & Maintenance Ltd | Other services | 2017 |
| GCM Construction London Ltd | Construction | 2019 |
| GCW Design Ltd | Professional & scientific | 2021 |
| GD Advance Limited | Administrative & support | 2010 |
| GD Soft Limited | Information & communication | 2010 |
| GD Works Europe Ltd | Extraterritorial | 2021 |
| GDR Cargo Limited | Transport & logistics | 2024 |
| Gears Forward Driver Training Ltd | Education | 2016 |
| Geedex Limited | Information & communication | 2021 |
| Geeky Planet Ltd | Administrative & support | 2009 |
| Gemclean Detailing Ltd | Wholesale & retail | 2019 |
| Gemini Healthcare Services Limited | Professional & scientific | 1991 |
| Gemini Publishing Ltd | Information & communication | 2021 |
| Gemini Training and Consulting Ltd | Professional & scientific | 2018 |
| Gemswish Limited | Wholesale & retail | 2022 |
| GEN Trade UK Ltd | Wholesale & retail | 2025 |
| General Lamps Limited | Manufacturing | 2000 |
| Genesis Martial Arts Ltd | Arts & recreation | 2024 |
| Genetica Ltd | Health & social care | 2022 |
| Gentle Paws Walking Ltd | Other services | 2025 |
| Genzessentials Limited | Wholesale & retail | 2025 |
| Geocris Drive Limited | Transport & logistics | 2016 |
| Geodis Contract Logistics United Kingdom Limited | Transport & logistics | 2020 |
| Geodis Global Solutions United Kingdom Limited | Administrative & support | 2009 |
| Geodis United Kingdom Limited | Transport & logistics | 1985 |
| Geofflyno Properties LLP | | 2019 |
| Geometric Tiling Ltd | Construction | 2022 |
| George Garrioch Ltd | Real estate | 2018 |
| George James Consulting Ltd | Professional & scientific | 2026 |
| George Simon Landscapes Ltd | Administrative & support | 2025 |
| George Wimpey Bristol Limited | Construction | 2000 |
| George Wimpey City 2 Limited | Construction | 1962 |
| George Wimpey City Limited | Construction | 2000 |
| George Wimpey East Anglia Limited | Construction | 1964 |
| George Wimpey East London Limited | Construction | 2000 |
| George Wimpey East Midlands Limited | Construction | 1997 |
| George Wimpey Limited | Professional & scientific | 1978 |
| George Wimpey Manchester Limited | Extraterritorial | 1985 |
| George Wimpey Midland Limited | Extraterritorial | 1993 |
| George Wimpey North East Limited | Extraterritorial | 2000 |
| George Wimpey North London Limited | Extraterritorial | 1974 |
| George Wimpey North Midlands Limited | Extraterritorial | 1993 |
| George Wimpey North West Limited | Extraterritorial | 1965 |
| George Wimpey North Yorkshire Limited | Extraterritorial | 1993 |
| George Wimpey South East Limited | Construction | 1971 |
| George Wimpey South Midlands Limited | Construction | 1963 |
| George Wimpey South West Limited | Construction | 1970 |
| George Wimpey South Yorkshire Limited | Construction | 1967 |
| George Wimpey Southern Counties Limited | Construction | 1985 |
| George Wimpey West London Limited | Construction | 2000 |
| George Wimpey West Midlands Limited | Construction | 2000 |
| George Wimpey West Yorkshire Limited | Construction | 1961 |
| Georgewtaylor Ltd | Construction | 2025 |
| German Prestige Ltd | Wholesale & retail | 2019 |
| GET Away Transport Limited | Transport & logistics | 2019 |
| GET Rich Coaching and Consultancy Ltd | Professional & scientific | 2011 |
| Getmycarsold.Co.Uk Ltd | Wholesale & retail | 2024 |
| GF Cars Ltd | Wholesale & retail | 2025 |
| GF Recoveries Ltd | Wholesale & retail | 2026 |
| GFR Real Estate Ltd | Real estate | 2017 |
| GG Evergoods Private Limited | Wholesale & retail | 2025 |
| GG Services (UK) Limited | Other services | 2005 |
| GG-256-889 Limited | Real estate | 2023 |
| GH Property Holdings UK Limited | Real estate | 2016 |
| Ghangal Ltd | Information & communication | 2025 |
| Ghjb Limited | Real estate | 2015 |
| GHM Consulting Limited | Professional & scientific | 2019 |
| Ghos Ltd | Real estate | 2024 |