| Ginders Wealth Management Ltd | Administrative & support | 2013 |
| Ginger Duck Estates Ltd | Real estate | 2026 |
| Giveducation Limited | Information & communication | 2022 |
| Givenergy Commercial Limited | Administrative & support | 2022 |
| Givenergy Group Limited | Financial services | 2022 |
| Givenergy Property Limited | Real estate | 2022 |
| Givenergy Software Limited | Information & communication | 2023 |
| GK Homes CIC | Hospitality | 2025 |
| GL MO Limited | Hospitality | 2025 |
| Glandore Apartments Management Company Limited | Extraterritorial | 2004 |
| Glass Balustrades Ireland Ltd | Manufacturing | 2024 |
| Gleamcy Ltd | Wholesale & retail | 2022 |
| Glebedale Court Management Company Limited | Households | 2006 |
| Glenada Ywca/Ymca Limited | Hospitality | 1991 |
| Glenmore Produce Ltd | Agriculture & fishing | 2015 |
| Global AMC Ltd | Financial services | 2025 |
| Global Business Corporation Ltd | Wholesale & retail | 2025 |
| Global Pilot Training Alliance Limited | Transport & logistics | 2020 |
| Global Resource Connect Limited | Administrative & support | 2025 |
| Global Synergix Limited | Wholesale & retail | 2024 |
| Globexim UK Ltd | Wholesale & retail | 2019 |
| Globi Commercium UK Ltd | Transport & logistics | 2019 |
| Glossibae Ltd | Other services | 2025 |
| Glow Consumer Products UK Limited | Wholesale & retail | 2014 |
| Glow Tanning Station Ltd | Other services | 2020 |
| Glowgal Ltd | Manufacturing | 2025 |
| GLW Hairdressing Ltd | Other services | 2012 |
| GM Builders Limited | Construction | 2001 |
| GMG Project & Cost Consultants Ltd | Professional & scientific | 2002 |
| GMH Surveyors Limited | Administrative & support | 2022 |
| GMHP1 Limited | Real estate | 2016 |
| GMW Electrical Services Ltd. | Administrative & support | 2020 |
| GMW Property (Staffs) Ltd | Construction | 2025 |
| GMZ Group Ltd | Real estate | 2024 |
| Go Lina Limited | Manufacturing | 2021 |
| Go Property Lettings Limited | Real estate | 2017 |
| Goat Girl Series 1 Ltd | Information & communication | 2021 |
| Goboxit Limited | Wholesale & retail | 2021 |
| Godwin Goodhealth Ltd | Health & social care | 2023 |
| Gold-House Healthcare Limited | Health & social care | 2025 |
| Goldbrook Design Ltd | Professional & scientific | 2026 |
| Golden Swallow Properties Ltd | Real estate | 2026 |
| Good Karma Assistance Dogs CIC | Other services | 2024 |
| Goodwins Property Maintenance Ltd | Real estate | 2024 |
| Goodwood Inheritance Planning Limited | Public administration | 2012 |
| Gorgeous Stationery Limited | Wholesale & retail | 2026 |
| Gosforth Paving Solutions Ltd | Construction | 2026 |
| Gourmet Guide Limited | Wholesale & retail | 2024 |
| Gowlett Lettings Ltd | Real estate | 2024 |
| GP4PC Limited | Health & social care | 2016 |
| GPR Consultancy Limited | Education | 2025 |
| GQ Enterprises Limited | Wholesale & retail | 2018 |
| GR8 Network Ltd | Information & communication | 2023 |
| Graf-Fix UK Limited | Administrative & support | 2008 |
| Graficle Ltd | Information & communication | 2026 |
| Grainger (Seraphina Resi) Limited | Real estate | 2025 |
| Grand PA Ltd | Construction | 2022 |
| Grand Union PUB Co Ltd | Hospitality | 2019 |
| Grange Yard Ltd | Arts & recreation | 2011 |
| Grangetech Limited | Real estate | 2004 |
| Granville Management Company Ltd | Real estate | 2023 |
| Granvilles Restaurants Limited | Hospitality | 2002 |
| Gravelley Property Ltd | Real estate | 2017 |
| GRC Retail Solutions Limited | Construction | 2002 |
| Great Jones of County Down Limited | Hospitality | 2026 |
| Green Bay Ltd | Wholesale & retail | 2021 |
| Green Cleen (Stoke) Limited | Administrative & support | 2024 |
| Green Crowd Limited | Information & communication | 2025 |
| Greenbank Property Development Ltd | Real estate | 2010 |
| Greengrid International Ltd | Energy | 2025 |
| Greentone Ltd. | Hospitality | 2012 |
| Greenwood Design & Build Ltd | Construction | 2023 |
| Greenwood Property Investments Ltd | Real estate | 2023 |
| Gregski Trans Ltd | Transport & logistics | 2014 |
| Greigphoto Limited | Professional & scientific | 2024 |
| Grice Brickwork Ltd | Construction | 2025 |
| Grid Green Limited | Energy | 2022 |
| Grids Construction Ltd | Construction | 2022 |
| Griffiths Consultancy Services Ltd | Health & social care | 2026 |
| Grizzly Beers Ltd | Hospitality | 2023 |
| Grooms Art - UK Limited | Manufacturing | 2025 |
| Group Chat Heroes Limited | Information & communication | 2022 |
| Group Function Limited | Professional & scientific | 2024 |
| GROUP2U Ltd | Construction | 2024 |
| Groupwork Coffee Ltd | Manufacturing | 2021 |
| Grout Gleam Midlands Ltd | Administrative & support | 2020 |
| Groves Chemists Limited | Wholesale & retail | 2006 |
| Grundy & Naisbitt Limited | Health & social care | 2010 |
| Grzmaa Limited | Health & social care | 2023 |
| GS Labour Solution Ltd | Administrative & support | 2020 |
| Gsds (Software) Limited | Information & communication | 2026 |
| GSM Guttering & Fascia Ltd | Construction | 2015 |
| GSO Properties Ltd | Real estate | 2022 |
| Gt.C Diagnostics Ltd | Professional & scientific | 2025 |
| Guhc Ltd | Professional & scientific | 2023 |
| GUIDE2LOTTO Limited | Arts & recreation | 2011 |
| Guitars-N-Gear Ltd | Wholesale & retail | 2026 |
| Gujar & Son's Limited | Transport & logistics | 2025 |
| Gulp Bottles Ltd | Wholesale & retail | 2019 |
| Gunther Ltd | Information & communication | 2024 |