| Ginway Holdings Ltd | Financial services | 2022 |
| Giotambo Investments Ltd | Real estate | 2025 |
| Giraffe Window Cleaning Ltd | Administrative & support | 2019 |
| Girbau UK Limited | Wholesale & retail | 1959 |
| Gjth Limited | Arts & recreation | 2025 |
| Gkkm Assets Limited | Real estate | 2025 |
| GKL Mortgage Brokers Limited | Financial services | 2018 |
| GKL Property Solutions Ltd | Real estate | 2023 |
| GKW Sports Management Ltd | Arts & recreation | 2014 |
| GL Wellbeing Limited | Wholesale & retail | 2022 |
| Glamourama Ltd | Wholesale & retail | 2025 |
| Glebe Rise Management Company Ltd | Households | 2025 |
| Glendale Vehicle Repairs Limited | | 1979 |
| Glenfield Software Limited | Information & communication | 1995 |
| Glenister Building Services Ltd | Construction | 2000 |
| Glenray Jewellers Limited | Wholesale & retail | 1967 |
| Glenthorne Road SPV Limited | Real estate | 2019 |
| Glenullin Limited | Construction | 2020 |
| GLH Managements Limited | Real estate | 2015 |
| Glia Production Limited | Information & communication | 2017 |
| Global Desktop Solutions Limited | Information & communication | 1997 |
| Global Digital and Social Ltd | Professional & scientific | 2025 |
| Global Fractional CMO Ltd | Professional & scientific | 2022 |
| Global Geoservices Ltd | Professional & scientific | 2016 |
| Global Impact Agency Limited | Administrative & support | 2023 |
| Global Musicals Limited | Arts & recreation | 2017 |
| Global Safeguarding Solutions Ltd | Education | 2025 |
| Globe Connect Holdings Limited | Financial services | 2023 |
| Glow for Good Limited | Wholesale & retail | 2024 |
| GMA Communications Ltd. | Information & communication | 1997 |
| GMB Properties Limited | Real estate | 2013 |
| Gmbp Limited | Real estate | 2015 |
| GML London Limited | Wholesale & retail | 2008 |
| GMT Financial Solutions Limited | Financial services | 2003 |
| Go Design Services Ltd | Professional & scientific | 2021 |
| Go Titan Ltd | Transport & logistics | 2020 |
| Goatfest Limited | Arts & recreation | 2018 |
| Godfrey Laws & Co Limited | Professional & scientific | 1998 |
| Godfrey Laws Audit Ltd | Professional & scientific | 2024 |
| Godfrey Laws Properties Ltd | Real estate | 2014 |
| Godni Ltd | Information & communication | 2025 |
| Gods of OUR Making Ltd | Manufacturing | 2025 |
| Goel Medical Services Limited | Health & social care | 2019 |
| Gold Label Sports & Entertainment Ltd | Administrative & support | 2015 |
| Gold Leaf Assets Limited | Real estate | 2022 |
| Golden Grange Ltd | Wholesale & retail | 2019 |
| Golden Green Consultants Ltd | Information & communication | 2015 |
| Goldlink Developments Limited | Construction | 2012 |
| Goldstone Talent Ltd | Administrative & support | 2025 |
| Goldwin Consulting Limited | Administrative & support | 2015 |
| Golf LAB Limited | Arts & recreation | 2026 |
| Gonext Ltd | Information & communication | 2025 |
| Good App Guide Ltd. | Information & communication | 2014 |
| Good BOY Wolf Limited | Hospitality | 2014 |
| Good Choice Dog Training Ltd | Other services | 2022 |
| Good Training Ltd | Information & communication | 2014 |
| Good World Limited | Real estate | 1986 |
| Goodfellas Grooming Hitchin Ltd | Other services | 2025 |
| Goodies Investments (UK) Limited | Real estate | 2012 |
| Goodridge Accountants Limited | Professional & scientific | 2016 |
| Goof Limited | Information & communication | 2012 |
| Gordale Limited | Professional & scientific | 2023 |
| Gorgeous Productions Limited | Arts & recreation | 2018 |
| Gormley Hendon Properties Limited | Extraterritorial | 2007 |
| Gosl NO 2 Limited | Financial services | 2019 |
| Gosmore LEY Close Management Company Limited | Households | 2025 |
| Govender Consulting Ltd | Professional & scientific | 2021 |
| GPG Signs Ltd | Manufacturing | 2020 |
| GPH Datacoms Limited | Information & communication | 1996 |
| Graceful Care at Home Ltd | Health & social care | 2025 |
| Graceporch Limited | Wholesale & retail | 2023 |
| Graham Pettit Solutions Ltd | Professional & scientific | 2018 |
| Grai Matter Consulting Ltd | Information & communication | 2022 |
| Granary Developments Limited | Construction | 2013 |
| Grand Square Commerce Ltd | Wholesale & retail | 2025 |
| Grange Building Co. Limited | Construction | 2014 |
| Grange Pharma Consultancy Limited | Professional & scientific | 2022 |
| Grant & Co. Advisory Ltd | Professional & scientific | 2025 |
| Graphinc Ltd | Professional & scientific | 2022 |
| Graphite Creative Limited | Extraterritorial | 2012 |
| Graphite CX Consulting Ltd | Professional & scientific | 2022 |
| Graphix Limited | Manufacturing | 2002 |
| Gratisul Limited | Administrative & support | 2021 |
| Grayscale Consulting Limited | Information & communication | 2015 |
| Graystone Commercial Ltd | Real estate | 1991 |
| Graziano Hair Limited | Other services | 2024 |
| Graziano Holdings Limited | Professional & scientific | 2015 |
| Great Offley Management Company Limited | Households | 2013 |
| Green Door Property Management Services Limited | Households | 2018 |
| Green EGG Ltd | Information & communication | 2000 |
| Green Goddess Flowers Limited | Wholesale & retail | 2021 |
| Green Kite Homes Limited | Construction | 2021 |
| Green Kite Homes MV Limited | Construction | 2022 |
| Green Kite Homes MV2 Limited | Construction | 2022 |
| Green Kite Homes Send Limited | Construction | 2022 |
| Green Lane Court (Hitchin) Residents Association Limited | Households | 1974 |
| Green Living Technologies Ltd | Construction | 2022 |
| Green MAN Developments Limited | Construction | 2020 |
| Green Skills Partnership C.I.C. | Information & communication | 2016 |
| Green Swan Compliance Limited | Information & communication | 2023 |