| Gigyani Corporation Ltd | Wholesale & retail | 2020 |
| Giles Developments Ltd | Real estate | 2025 |
| Giles Drylining Limited | Construction | 2019 |
| Giles Heating Ltd | Other services | 2001 |
| Gill Corporate Limited | Financial services | 2013 |
| Gill Instruments Limited | Manufacturing | 1988 |
| Gill R & D Ltd | Professional & scientific | 2013 |
| Gill Research & Development Limited | Professional & scientific | 1996 |
| Gill Sensors & Controls Limited | Manufacturing | 2014 |
| Gill Southern Limited | Administrative & support | 2015 |
| Gilliland Family Holdings Ltd | Real estate | 2017 |
| Gilliland Family Partnership LLP | | 2017 |
| Gilly Gray Ltd | Manufacturing | 2003 |
| GIN Festivals UK Ltd | Professional & scientific | 2019 |
| Ginger BOY Productions Limited | Arts & recreation | 2008 |
| Ginger Mischief Events Limited | Professional & scientific | 2020 |
| Ginger POP Limited | Wholesale & retail | 2009 |
| Gingerbread Analytics Ltd | Information & communication | 2023 |
| Giraffe Design Limited | Professional & scientific | 2013 |
| Giria Limited | Information & communication | 2024 |
| Girls GET Global Ltd | Administrative & support | 2024 |
| Gitlive Ltd | Information & communication | 2019 |
| Give US a Quiz Ltd | Wholesale & retail | 2022 |
| Givt Ltd | Financial services | 2018 |
| GJC Medical Imaging Specialists Limited | Health & social care | 2019 |
| GK Haulage Ltd | Transport & logistics | 2025 |
| GK Phones Ltd | Wholesale & retail | 2023 |
| GKF Nominees One Limited | Extraterritorial | 2012 |
| GKF Wealth Management Limited | Financial services | 2008 |
| Gkplproperty Ltd | Real estate | 2025 |
| GL Home Services Ltd | Health & social care | 2024 |
| Glacier Motion Pictures Ltd | Information & communication | 2025 |
| Glamour Beauty Parlour Ltd | Other services | 2014 |
| GLANYRAFON1924 Ltd | Financial services | 2021 |
| Glare 9 Limited | Information & communication | 2014 |
| Glarses Limited | Information & communication | 2021 |
| Glass Harbour Developments Ltd | Construction | 2022 |
| Glass Harbour Developments RG Ltd | Construction | 2024 |
| Glass Harbour Developments Two Ltd | Construction | 2025 |
| Glass Surgeon (South West) Ltd | Wholesale & retail | 2018 |
| Glasses Works Ltd | Wholesale & retail | 2024 |
| Glassline Limited | Manufacturing | 2000 |
| Glavine Ltd | Wholesale & retail | 2025 |
| Gleezip Ltd | Transport & logistics | 2026 |
| Glen Elgin Group Ltd | Financial services | 2016 |
| Glen Management Limited | Households | 2025 |
| Glen Vincent Homes Ltd | Real estate | 2025 |
| Glenair Consulting Limited | Professional & scientific | 2025 |
| Glenan Investments Limited | Real estate | 2016 |
| Glenavon Properties Limited | Real estate | 1993 |
| Glencoe Holdings Ltd | Construction | 2018 |
| Glencroft Ltd | Information & communication | 2020 |
| Glenflow Limited | Real estate | 2022 |
| Glenleven Properties Ltd | Real estate | 2011 |
| Glenmere House Property Limited | Professional & scientific | 2002 |
| Glenmere Investment Property Ltd | Real estate | 2000 |
| Glenton House Management Co. Limited | Households | 2001 |
| Glhm Consulting Limited | Professional & scientific | 2025 |
| Glob Trading Ltd | Wholesale & retail | 2020 |
| Global ARC AI Ltd | Information & communication | 2026 |
| Global ARC Security Ltd | Administrative & support | 2026 |
| Global Chemicals Limited | Wholesale & retail | 2023 |
| Global Citizenship Advisors Ltd | Professional & scientific | 2025 |
| Global Electrical Resources Ltd | Construction | 2018 |
| Global Environmental Expertise Limited | Professional & scientific | 2010 |
| Global Mailing Solutions Ltd | Other services | 2018 |
| Global MZ Solutions Ltd | Information & communication | 2015 |
| Global Newswire Group Ltd | Professional & scientific | 2019 |
| Global Optics (UK) Limited | Manufacturing | 1998 |
| Global Print Limited | Wholesale & retail | 2023 |
| Global Reach Group Limited | Wholesale & retail | 2025 |
| Global Skills and Education Services Limited | Administrative & support | 2022 |
| Global Soccer Education Limited | Education | 2019 |
| Global Telesat Communications Limited | Information & communication | 2008 |
| Global Trade Systems Ltd | Wholesale & retail | 2021 |
| Globalgrove Enterprises Limited | Wholesale & retail | 2025 |
| Globalmarketingbr Ltd | Information & communication | 2026 |
| Globespec Ltd | Hospitality | 2021 |
| Globetech GSE Ltd | Wholesale & retail | 2025 |
| Globy BR Limited | Wholesale & retail | 2025 |
| Gloom Global Ltd | Wholesale & retail | 2021 |
| Glory Sparks Ltd | Wholesale & retail | 2024 |
| Gloss Label Ltd | Manufacturing | 2023 |
| Gloucestershire Theatre Company Limited | Administrative & support | 2008 |
| Glowganic Distribution Limited | Wholesale & retail | 2025 |
| Glowing Trends Ltd | Wholesale & retail | 2025 |
| GLP E-Commerce Limited | Wholesale & retail | 2017 |
| Glyde Paddle Boards Ltd | Wholesale & retail | 2021 |
| GM Designs Limited | Professional & scientific | 2007 |
| GM Steel Structures Ltd | Manufacturing | 2024 |
| GMA Trading Ltd | Wholesale & retail | 2024 |
| Gman Eleven Ltd | Arts & recreation | 2025 |
| GMD & Sons Limited | Wholesale & retail | 2025 |
| GMI Building Limited | Construction | 2017 |
| GML Freight Ltd | Transport & logistics | 2025 |
| GMT and Associates Limited | Administrative & support | 2012 |
| Gmyz Limited | Information & communication | 2020 |
| GNB Software Limited | Information & communication | 2000 |
| GNC Holdings Limited | Financial services | 2025 |
| Go Assist Ltd | Other services | 2013 |