| Gavb Limited | Real estate | 2022 |
| Gavin (2022) Ltd | Wholesale & retail | 2022 |
| Gavin Property Group Limited | Real estate | 2024 |
| Gayton Pool Limited | Arts & recreation | 2010 |
| Gaza Water Limited | Manufacturing | 2024 |
| Gazbeco Ltd | Hospitality | 2018 |
| Gazbee Limited | Professional & scientific | 2025 |
| Gazik Ltd | Wholesale & retail | 2026 |
| Gazik Skyline Group Ltd | Construction | 2026 |
| Gazmart Trading Limited | Wholesale & retail | 2018 |
| GB Fire Safety Ltd | Public administration | 2015 |
| GB Labels Limited | Wholesale & retail | 2013 |
| GB Painters and Decorators Limited | Real estate | 2025 |
| GB People Limited | Professional & scientific | 2020 |
| GB Wholesaler Ltd | Wholesale & retail | 2019 |
| Gbenga Osekita & Associates Limited | Education | 2008 |
| GBF Strategy Ltd | Health & social care | 2016 |
| GBJ Homes Limited | Real estate | 2022 |
| GBJ Property Group Ltd | Financial services | 2024 |
| GBK Powertech Ltd | Professional & scientific | 2025 |
| GBK Property Services Ltd | Real estate | 2025 |
| GBS Estates Limited | Real estate | 2011 |
| Gburgess Holdings Limited | Real estate | 2014 |
| GCA (UK) Limited | Professional & scientific | 1999 |
| GCE Investments | Financial services | 2022 |
| GCS Electrical Ltd | Manufacturing | 2026 |
| GD Gidda Limited | Real estate | 2026 |
| GD Group Ltd | Construction | 2025 |
| GD Thompson Limited | Financial services | 2024 |
| GD Ward Properties Ltd | Construction | 2026 |
| GDD Electrical Services Limited | Construction | 2021 |
| Gdffltd Ltd | Manufacturing | 2026 |
| Gdma Technology Limited | Professional & scientific | 2013 |
| GDO Conveyancing Services Ltd | Professional & scientific | 2022 |
| GDT Estates Limited | Real estate | 2019 |
| GDT Software Solutions Ltd | Information & communication | 2016 |
| GDW UK Limited | Information & communication | 2015 |
| GE 2023 Limited | Financial services | 2023 |
| GE Commercial Construction Ltd | Construction | 2014 |
| Gear UP Driving School Ltd | Education | 2021 |
| Gearup Talent Ltd | Extraterritorial | 2025 |
| Gecko Residential Ltd | Real estate | 2023 |
| Geeconstruction Ltd | Construction | 2024 |
| Geena Elliott Consultancy Ltd | Professional & scientific | 2024 |
| Gehlon & Sons Services Ltd | Transport & logistics | 2021 |
| Gejm Ltd | Agriculture & fishing | 2018 |
| GEL Associates Limited | Professional & scientific | 2011 |
| GEL Global Ltd | Agriculture & fishing | 1980 |
| Gelato Divino UK Limited | Hospitality | 2017 |
| Gelida Limited | Wholesale & retail | 2023 |
| Gellaw Newco 204 Limited | Financial services | 2018 |
| GEM & Co Financial Services Limited | Financial services | 2021 |
| GEM Event Management Limited | Arts & recreation | 2025 |
| GEM Medical Limited | Health & social care | 2016 |
| GEM Recruitment Ltd | Administrative & support | 2025 |
| GEM Sapphire Limited | Wholesale & retail | 2026 |
| Gemba Services Limited | Construction | 2023 |
| Gemini Hair Beauty and Tanning Salon Limited | Other services | 2017 |
| Gemline Ltd | Wholesale & retail | 2025 |
| Gemlogic Limited | Professional & scientific | 2016 |
| Gemma Homes Limited | Real estate | 1993 |
| Gemma Properties Limited | Real estate | 1988 |
| Gemmill Green Technology Limited | Administrative & support | 2010 |
| Gems HR Limited | Administrative & support | 2026 |
| Gems Property Developers Limited | Real estate | 2012 |
| Gemstone EAM Limited | Information & communication | 2022 |
| Genadijs Ltd | Transport & logistics | 2025 |
| General Mortgages Ltd | Financial services | 2021 |
| General Practice Task Force (Gptf) Limited | Health & social care | 2013 |
| GENERAL01 Ltd | Education | 2023 |
| Generalboost Limited | Information & communication | 1995 |
| Generating Insight Ltd | Professional & scientific | 2026 |
| Generation V Limited | Manufacturing | 2000 |
| Genero Infotech Ltd | Information & communication | 2015 |
| Genesis Group Limited | Construction | 2015 |
| Genesis Occupational Health Ltd | Health & social care | 2014 |
| Genesis Property Group Ltd | Financial services | 2021 |
| Genesis Strength and Performance Ltd | Arts & recreation | 2026 |
| Genietc Limited | Hospitality | 2025 |
| Geniouse Limited | Wholesale & retail | 2021 |
| Genius Performance Limited | Professional & scientific | 2019 |
| Genius Pro Services Ltd | Administrative & support | 2017 |
| Geniusguides Ltd | Education | 2023 |
| Gentz Cuts Studio Ltd | Other services | 2025 |
| Genuine Care Ltd | Health & social care | 2018 |
| GEO Accountants Ltd | Professional & scientific | 2021 |
| Geoanis Heating Limited | Construction | 2025 |
| Geoff Bull Limited | Construction | 2013 |
| Geoff Haynes Limited | Construction | 2015 |
| Geojac Ltd | Health & social care | 2020 |
| George & Co Holdings Ltd | Financial services | 2026 |
| George & Jameson Tree Services Ltd | Administrative & support | 2020 |
| George CB Limited | Transport & logistics | 2020 |
| George Chilton Limited | Financial services | 2019 |
| George Elliott Landscape Services Limited | Other services | 2003 |
| George Gruia Limited | Transport & logistics | 2018 |
| George Hogg Music Ltd | Arts & recreation | 2023 |
| George Simnett Properties Limited | Extraterritorial | 2021 |
| George W. Heath & Sons (Builders) Limited | Construction | 1969 |
| Georgetown Consulting Ltd | Professional & scientific | 2024 |