| Gildedlily Limited | Wholesale & retail | 2025 |
| Gina's Sparkling Cleaning Limited | Administrative & support | 2025 |
| Giousplan Ltd | Transport & logistics | 2024 |
| Gittens Infrastructure Rigging Ltd | Construction | 2025 |
| Giuval Ltd | Transport & logistics | 2022 |
| Gizmomo Ltd | Wholesale & retail | 2018 |
| GJ Landscape Management Ltd | Construction | 2015 |
| Gjhis Limited | Construction | 2009 |
| GK Burton Ltd | Transport & logistics | 2022 |
| GK Welding Services Ltd | Professional & scientific | 2021 |
| GL Logistics (Worcs) Ltd | Construction | 2018 |
| GL Properties (Midlands) Ltd | Real estate | 2019 |
| GLA 2025 Limited | Manufacturing | 2016 |
| Gladstone Park Limited | Wholesale & retail | 2022 |
| Gladstone Place Residents Ltd. | Households | 2017 |
| Glafubblog Ltd | Health & social care | 2024 |
| Glamgrace Limited | Information & communication | 1985 |
| Glass Bonding Limited | Manufacturing | 2004 |
| Glemprom Ltd | Wholesale & retail | 2024 |
| Global Battery Services Ltd | Manufacturing | 2025 |
| Glowgater Ltd | Wholesale & retail | 2018 |
| Glynran Ltd | Administrative & support | 2018 |
| Glysvynia Ltd | Administrative & support | 2021 |
| GMB Family Ltd | Wholesale & retail | 2026 |
| Go Ginipig Limited | Information & communication | 2019 |
| Gold 24 Limited | Wholesale & retail | 2020 |
| Goldacre Corporation Limited | Real estate | 2002 |
| Golden Bricks Invest Hub Ltd | Financial services | 2025 |
| Goldenogan Limited | Households | 1983 |
| Goldenstone Estate Investments Ltd | Construction | 2023 |
| Gomiathiux Ltd | Administrative & support | 2024 |
| Goodheart Animal Sanctuaries | Agriculture & fishing | 2015 |
| Gorillasmokes Ltd | Wholesale & retail | 2023 |
| Gorleston Ltd | Manufacturing | 2021 |
| Gosh! Television Limited | Information & communication | 2017 |
| Gosling Consultancy Ltd | Professional & scientific | 2010 |
| Gourmets Catering Limited | Hospitality | 2024 |
| GPB Trees and Landscapes Ltd | Administrative & support | 2025 |
| GPK Consultancy Ltd | Administrative & support | 2006 |
| GR Creative Limited | Information & communication | 2025 |
| Grace Builders Limited | Construction | 2019 |
| Graceflyer Ltd | Wholesale & retail | 2018 |
| Graddon Property Services Limited | Construction | 2005 |
| Graham Subsea Limited | Professional & scientific | 2013 |
| Grainger Brothers (Farms) Limited | Agriculture & fishing | 1983 |
| Gralarex Ltd | Wholesale & retail | 2018 |
| Granary Banqueting Ltd | Hospitality | 2022 |
| Granary Hotel Villa Limited | Hospitality | 2022 |
| Granary Villa Functions Limited | Health & social care | 2024 |
| Grange Croft Management Limited | Households | 1991 |
| Granger Commercials Ltd | Wholesale & retail | 2023 |
| Graslovens Ltd | Wholesale & retail | 2018 |
| Grass Roots Garden & Ground Maintenance Ltd | Administrative & support | 2015 |
| Grassstrikecave Ltd | Administrative & support | 2019 |
| Grastear Ltd | Wholesale & retail | 2018 |
| Grasu Logistics Limited | Transport & logistics | 2017 |
| Gravitas Holdings UK Limited | Professional & scientific | 2019 |
| Gray Commercial Property Portfolio Limited | Real estate | 2023 |
| Gray Property Portfolio Limited | Real estate | 2017 |
| Grays Company Holdings Limited | Financial services | 2023 |
| Grazing Station Limited | Hospitality | 2021 |
| Great Britain Energy Limited | Extraterritorial | 2022 |
| Green Pastures Care Limited | Health & social care | 2012 |
| Green Taberner Limited | Wholesale & retail | 2019 |
| Green UP! Ltd | Information & communication | 2024 |
| Greenaway Planning Limited | Administrative & support | 2018 |
| Greenbridge Consultancy Limited | Professional & scientific | 2017 |
| Greenearthecology Ltd | Professional & scientific | 2022 |
| Greener Glazing Home Improvements Limited | Construction | 2011 |
| Greener Glazing Limited | Extraterritorial | 2022 |
| Greener Options Limited | Health & social care | 2006 |
| Greenfields (Sports Surfaces) UK Ltd | Professional & scientific | 2009 |
| Greensafe Holdings Limited | Financial services | 2015 |
| Greensafe IT Limited | Wholesale & retail | 2012 |
| Greensafe Property (Droitwich) Ltd | Real estate | 2024 |
| Greensafe Property Limited | Real estate | 2015 |
| Greentree Wealth Management Limited | Financial services | 2021 |
| Greenways Architectural Limited | Manufacturing | 2011 |
| Gregdrive Ltd | Transport & logistics | 2011 |
| Greswolde Plant Ltd | Administrative & support | 2024 |
| Gribly Ltd | Wholesale & retail | 2022 |
| Grimryst Ltd | Administrative & support | 2024 |
| Gro-For-It Limited | Agriculture & fishing | 2000 |
| Grosvenor Gardens (Stourport) Management Limited | Households | 1989 |
| Grosvenor Television Productions Limited | Other services | 1992 |
| GS Heating & Electrical Limited | Construction | 2009 |
| GSA Groundworks Limited | Construction | 2017 |
| GT Transport Ltd | Transport & logistics | 2025 |
| GTS Prime Locations Limited | Real estate | 2023 |
| GTS Recruiting and Trainings Limited | Administrative & support | 2023 |
| GTT Construction Limited | Construction | 2023 |
| GTV TM Ltd | Construction | 2023 |
| GU Dhillon Ltd | Administrative & support | 2021 |
| Guedesquest Ltd | Administrative & support | 2024 |
| Guitar Academy Limited | Arts & recreation | 2006 |
| Gupta Super Store Ltd | Wholesale & retail | 2012 |
| Gwaa Solutions Ltd. | Information & communication | 2021 |
| Gyalchium Ltd | Hospitality | 2024 |
| H & S Prosthetics (Kidderminster) Limited | Health & social care | 2018 |
| H C Motorhome Hire Ltd | Other services | 2023 |