| Gaststaette ZUM Stadion Limited | Administrative & support | 2011 |
| GAT3WAY Limited | Professional & scientific | 2018 |
| Gata (UK) Limited | Transport & logistics | 2011 |
| Gate 88 Ltd | Hospitality | 2010 |
| Gate Automation UK Limited | Real estate | 2009 |
| Gate ST Autos Ltd | Wholesale & retail | 2024 |
| GATE6 Ltd | Professional & scientific | 2024 |
| Gatecrasher Classical Limited | Hospitality | 2018 |
| Gateley (Holdings) PLC | Professional & scientific | 2014 |
| Gateley Capitus Limited | Professional & scientific | 1997 |
| Gateley Custodian and Nominee Services Limited | Administrative & support | 2014 |
| Gateley Custodian and Nominee Services NO. 2 Limited | Extraterritorial | 2009 |
| Gateley Director Limited | Professional & scientific | 2025 |
| Gateley EBT Limited | Administrative & support | 2015 |
| Gateley Global Limited | Information & communication | 2013 |
| Gateley Group Limited | Real estate | 2016 |
| Gateley Hamer Limited | Professional & scientific | 2000 |
| Gateley Incorporations Limited | Professional & scientific | 1998 |
| Gateley Investments Limited | Administrative & support | 1994 |
| Gateley Omega Limited | Professional & scientific | 2021 |
| Gateley PLC | Professional & scientific | 2014 |
| Gateley RJA Limited | Professional & scientific | 2012 |
| Gateley Secretaries Limited | Professional & scientific | 1998 |
| Gateley Smithers Purslow Limited | Professional & scientific | 1978 |
| Gateley Trust Corporation Limited | Administrative & support | 2022 |
| Gateley UK LLP | | 2005 |
| Gateley Vinden Limited | Professional & scientific | 1999 |
| Gates Bollards and Automation Ltd | Construction | 2025 |
| Gates of Babylon LP | | 2017 |
| Gates of Light Ltd | Health & social care | 2014 |
| Gates of London LP | | 2017 |
| Gates of Troya LP | | 2017 |
| Gates Railings and Fencing Limited | Manufacturing | 2015 |
| Gateshead Building Company Limited | Construction | 2019 |
| Gateshead Storage Ltd | Transport & logistics | 2018 |
| Gateview Digital Ltd | Information & communication | 2025 |
| Gateway 2 Construction Ltd | Construction | 2020 |
| Gateway Abroad Ltd | Information & communication | 2017 |
| Gateway Accommodation Ltd | Households | 2023 |
| Gateway Africa UK Limited | Wholesale & retail | 2008 |
| Gateway Commercial Services Ltd | Professional & scientific | 2013 |
| Gateway Family Services Community Interest Company | Health & social care | 2006 |
| Gateway Haus Limited | Construction | 2025 |
| Gateway Housing and Support Services Ltd | Real estate | 2024 |
| Gateway Housing WM Ltd | Real estate | 2023 |
| Gateway PM Limited | Real estate | 2020 |
| Gateway PVT Limited | Wholesale & retail | 2024 |
| Gateway Social Housing Ltd | Real estate | 2020 |
| Gateway to Claims B,Ham Ltd | Financial services | 2010 |
| Gateway to Food Ltd | Hospitality | 2025 |
| Gateway to Production Ltd | Information & communication | 2025 |
| Gateway Training Solutions Limited | Real estate | 2008 |
| GATEWAY2HOUSING Services UK Ltd | Real estate | 2017 |
| Gatewayz Consultants Ltd | Wholesale & retail | 2024 |
| Gati Automata Limited | Information & communication | 2017 |
| Gatix Ltd | Wholesale & retail | 2021 |
| Gatorsecure Ltd | Administrative & support | 2025 |
| Gatsby Court Limited | Extraterritorial | 2012 |
| Gatware Nominees Limited | Administrative & support | 1989 |
| Gaudi BCN Ltd | Administrative & support | 2019 |
| Gauge Properties Ltd | Real estate | 2025 |
| Gaulden Property Group Ltd | Real estate | 2024 |
| Gaura Beauty Limited | Other services | 2024 |
| Gauthama Authentic Thai Ltd | Hospitality | 2025 |
| Gav's Autos Limited | Transport & logistics | 2025 |
| Gavardi Project Solutions Ltd | Professional & scientific | 2018 |
| Gavin Jagger Limited | Other services | 2024 |
| Gavin Mack Jewellery Ltd | Manufacturing | 2003 |
| Gavis Company ADS Limited | Information & communication | 2025 |
| GAW Services Limited | Construction | 2016 |
| Gawgaw Cleaning and Other Services Ltd | Administrative & support | 2022 |
| Gawooni PLC | Information & communication | 2014 |
| Gayatri Consulting Ltd | Extraterritorial | 2015 |
| Gaye Limited | Transport & logistics | 2025 |
| Gayle Electrical Limited | Construction | 2007 |
| Gayne Technology Co. Ltd | Information & communication | 2011 |
| Gaynesshomar 25 Ltd | Other services | 2025 |
| GAZ Housing Limited | Real estate | 2022 |
| GAZ Trading Services Limited | Other services | 2020 |
| Gazi Legal Services Ltd | Professional & scientific | 2026 |
| Gazi Ltd | Information & communication | 2013 |
| Gazys Logistics Services Ltd | Transport & logistics | 2023 |
| Gazys Transport Services Ltd | Transport & logistics | 2025 |
| GB 311 Limited | Hospitality | 2026 |
| GB 688 Limited | Hospitality | 2022 |
| GB Accommodation Ltd | Hospitality | 2022 |
| GB Autocentre Ltd | Wholesale & retail | 2025 |
| GB Bangor Limited | Hospitality | 2025 |
| GB Cantonese Limited | Hospitality | 2021 |
| GB Car Parks Ltd | Hospitality | 2019 |
| GB Consultant Ltd | Information & communication | 2009 |
| GB Core Construction Limited | Construction | 2024 |
| GB Corporate Aviation Ltd | Transport & logistics | 2016 |
| GB Developments (BPS) LLP | | 2013 |
| GB Developments (Greenwich) Limited | Real estate | 2007 |
| GB Developments Limited | Real estate | 2002 |
| GB Drinks Ltd | Wholesale & retail | 2015 |
| GB Electrician Limited | Manufacturing | 2026 |
| GB ERP Solutions Ltd | Information & communication | 2011 |
| GB Essentials Ltd | Wholesale & retail | 2023 |