| Fuller GAS & Heating Ltd | Construction | 2019 |
| Funky Monk Trading UK Ltd | Hospitality | 2025 |
| Funky Properties (Epping) Limited | Real estate | 2025 |
| Funky Properties (Woodford) Limited | Real estate | 2025 |
| Fusion Cell Consulting Limited | Information & communication | 2013 |
| Fusion One Cardiff Limited | Real estate | 2025 |
| Future Punk Limited | Arts & recreation | 2000 |
| Future Traditions Limited | Wholesale & retail | 2018 |
| Futurenft Marketing PVT Ltd | Financial services | 2025 |
| G & N Structural Engineers Ltd | Construction | 2024 |
| G Patrick Maintenance Ltd | Construction | 2021 |
| G. T. Commercial Holdings Limited | Real estate | 2015 |
| G. Younger Limited | Construction | 1997 |
| G.T. Comms Limited | Information & communication | 1998 |
| Gage Homes Ltd | Real estate | 2021 |
| Galaxy Stones Ltd | Manufacturing | 2018 |
| Gallag Works Ltd | Information & communication | 2026 |
| Gandesha Estates Investments Limited | Real estate | 2023 |
| Garage Therapy Ltd | Administrative & support | 2019 |
| Gary Charles Ltd | Professional & scientific | 2023 |
| GAS Training & Assessment Ltd | Other services | 2019 |
| Gaulia & Co Ltd | Construction | 2022 |
| GD Auto Exchange Ltd | Wholesale & retail | 2024 |
| GDI Consult Ltd | Information & communication | 2021 |
| Gened Labs Ltd | Professional & scientific | 2025 |
| Generation Joinery Limited | Manufacturing | 2009 |
| Gently Nudge Ltd | Information & communication | 2022 |
| George Douglas Properties Limited | Hospitality | 2012 |
| George Hick Brickwork Ltd | Construction | 2023 |
| GET to Know Animals CIC | Arts & recreation | 2023 |
| GGK Theydon Ltd. | Professional & scientific | 2017 |
| Gifteroo Ltd | Wholesale & retail | 2021 |
| Giorgi Fashions Limited | Wholesale & retail | 2017 |
| GJR (Healthcare) Limited | Professional & scientific | 2009 |
| Gladdens Farm Ltd | Agriculture & fishing | 1949 |
| Glasgogems PVT Limited | Financial services | 2025 |
| Glassdoorrep Ltd | Wholesale & retail | 2022 |
| Glasstec Systems Limited | Manufacturing | 2010 |
| Gmag UK Limited | Construction | 2013 |
| Go Lettings Ltd | Real estate | 2019 |
| Goal Click Limited | Professional & scientific | 2016 |
| Gobind Properties Ltd | Real estate | 2014 |
| Gold & Silver Building Services Ltd | Construction | 2024 |
| Goldcrest Capital Group Ltd | Construction | 2026 |
| Golden Bench Ltd | Professional & scientific | 2018 |
| Golden Brick Real Estate Limited | Financial services | 2020 |
| Golden Brick ST Johns Wood Limited | Real estate | 2024 |
| Golden Brick Stanmore Limited | Real estate | 2025 |
| Golden EAR Music Ltd | Information & communication | 2021 |
| Golf Kilo Aviation Limited | Households | 2011 |
| Goonown Property Limited | Real estate | 2023 |
| Gordonson Fire Protection Limited | Construction | 1994 |
| Gorman Interests Limited | Real estate | 1989 |
| Goss Group Limited | Manufacturing | 2016 |
| Goss Spring Components Limited | Professional & scientific | 2010 |
| Goss Springs and Wire Forms Limited | Manufacturing | 2016 |
| Goss Springs Limited | Manufacturing | 2009 |
| GPS Turbines Limited | Administrative & support | 2014 |
| Granagh Plant Services Ltd | Construction | 1997 |
| Grange Farm Sports Centre Limited | Arts & recreation | 2009 |
| Green Smart Valeting Ltd | Other services | 2018 |
| Greenfrog Ventures Ltd | Financial services | 2024 |
| Greenwood’S Home Care Limited | Health & social care | 2026 |
| Griggs Streetlighting and Maintenance Limited | Construction | 2005 |
| Grow With Leads Limited | Professional & scientific | 2021 |
| GS Entertainment & Services Ltd | Arts & recreation | 2020 |
| GS Tower Limited | Hospitality | 2019 |
| GSB Marketing Ltd | Professional & scientific | 2026 |
| Gtampc Limited | Real estate | 2025 |
| GTF Landscapes Limited | Administrative & support | 2002 |
| GTF Tree Care Ltd | Administrative & support | 2023 |
| Guruji Blessings Limited | Health & social care | 2025 |
| GW Propco Ltd | Real estate | 2022 |
| Gwynplaine Holdings Ltd | Financial services | 2021 |
| H&A UK Group Ltd | Professional & scientific | 2026 |
| H&R Pritchard Ltd | Real estate | 2019 |
| H&V Home Improvements Ltd | Construction | 2017 |
| H.& G.(Epping)Limited | Wholesale & retail | 1971 |
| Hammond and Smith Estate Agents Limited | Real estate | 2020 |
| Hammond Oak Framing Ltd | Construction | 2019 |
| Hampak Limited | Extraterritorial | 2013 |
| Hand Car Wash Epping Green Ltd | Administrative & support | 2026 |
| Happy Bees (Essex) Limited | Wholesale & retail | 2017 |
| Harleys Lounge Epping Ltd | Hospitality | 2026 |
| Hartswood Management Limited | Professional & scientific | 2003 |
| Hatcham Properties Ltd | Real estate | 2024 |
| Haus London Ltd | Real estate | 2009 |
| Hawkins Collective Ltd | Administrative & support | 2026 |
| Hayleys Farms Limited | Financial services | 2019 |
| HB Interglobe Ltd | Wholesale & retail | 2025 |
| HDS Property Investments Ltd | Real estate | 2026 |
| HDSALES8 Ltd | Wholesale & retail | 2026 |
| Head Estate Limited | Real estate | 2017 |
| Healing Complex Trauma Ltd | Education | 2017 |
| Health = Happiness Ltd. | Information & communication | 2018 |
| Health Clinic Hammersmith Ltd | Health & social care | 2026 |
| Hearts & Minds Solutions Ltd | Professional & scientific | 2026 |
| Heat Rite Limited | Professional & scientific | 2006 |
| Heatcom Limited | Construction | 2010 |
| Heath Airspace Limited | Construction | 2023 |