| Gilbert Transport Services Limited | Transport & logistics | 2000 |
| Gilbert, Orton & Dayton Ltd | Wholesale & retail | 2023 |
| Gill Co Properties Limited | Households | 2025 |
| Gillettstone Housing Limited | Real estate | 2023 |
| Gilmore Electrical Limited | Construction | 2022 |
| Gina's Boutique UK Limited | Wholesale & retail | 2022 |
| Ginger Cat Properties Limited | Real estate | 2020 |
| Ginger Lime Ltd | Wholesale & retail | 2023 |
| Ginho Europe Precision Manufacturing Co Ltd | Manufacturing | 2012 |
| GJS Lettings Limited | Real estate | 2025 |
| Glad Property Investments Ltd | Construction | 2025 |
| Glamcam Ltd | Professional & scientific | 2024 |
| Glanford Ltd | Real estate | 2006 |
| Glascote Barbers Ltd | Other services | 2026 |
| Glascote Express Ltd | Wholesale & retail | 2025 |
| Glendale Installations Limited | Construction | 2003 |
| Glendale Property Services Limited | Administrative & support | 2025 |
| Glennsway Ltd | Construction | 2021 |
| Glitzy Bits Events Limited | Wholesale & retail | 2014 |
| Global Professional Solutions Ltd | Professional & scientific | 2025 |
| Global Salvage Ltd | Wholesale & retail | 2025 |
| Global Village Systems Limited | Financial services | 2007 |
| Globe Inn Limited | Hospitality | 1992 |
| Gloonan Assets Limited | Real estate | 2019 |
| Glovers Dairy Fresh Foods (UK) Ltd | Wholesale & retail | 2008 |
| Glovers Estate Management Ltd | Real estate | 2020 |
| Glovers Properties (Fradley) Ltd | Real estate | 2021 |
| Glovers Properties (Midlands) Ltd | Real estate | 2017 |
| Glovers Properties Central Ltd | Real estate | 2019 |
| Glow by Samira Ltd | Transport & logistics | 2021 |
| Glyn Thompstone Consultancy Ltd | Information & communication | 2024 |
| GM Clothing Ltd | Transport & logistics | 2023 |
| GM Training Solutions Limited | Education | 2016 |
| GNR GAS and Property Services Limited | Construction | 2018 |
| Go Communication Services Limited | Information & communication | 2025 |
| Go Finance Consulting Limited | Professional & scientific | 2022 |
| Go Maxx Ltd | Wholesale & retail | 2024 |
| Goddard Construction Management Limited | Construction | 2019 |
| Goffe Electrical Services Limited | Construction | 2014 |
| Gohil Consultancy Ltd | Health & social care | 2025 |
| Gold & Wassall (Hinges) Limited | Manufacturing | 1918 |
| Gold & Wassall (Holdings) Limited | Financial services | 2020 |
| Gold Route Ltd | Transport & logistics | 2016 |
| Gold Standard Security Ltd | Administrative & support | 2011 |
| Gold's Holdings Limited | Hospitality | 2020 |
| Golden Dragon 888 Limited | Hospitality | 2020 |
| Golden Rice (Cradley) Ltd | Hospitality | 2006 |
| Golder Engineering Limited | Manufacturing | 2003 |
| Goldinbox Limited | Wholesale & retail | 2022 |
| Golds Properties Limited | Real estate | 2003 |
| Goldtek Ltd | Information & communication | 2024 |
| Golf Services Network Limited | Wholesale & retail | 2024 |
| Good Dexter Limited | Construction | 2023 |
| Good Packing Company Limited | Manufacturing | 1956 |
| Good Safety Advice Ltd | Professional & scientific | 2015 |
| Goodwin Design & Engineering Ltd | Professional & scientific | 2026 |
| Gorbach Ltd | Transport & logistics | 2018 |
| Gorringe Landscapes Limited | Administrative & support | 2002 |
| Gough Interior Systems Limited | Construction | 2020 |
| Gough Property Investments Limited | Real estate | 2023 |
| GP Site Solutions Limited | Administrative & support | 2022 |
| GPC Estates Limited | Real estate | 2023 |
| GPV Produce Limited | Agriculture & fishing | 2021 |
| GR Tiling Ltd | Construction | 2018 |
| GR Trans Serv Ltd | Transport & logistics | 2013 |
| GR8 Place Ltd | Real estate | 2020 |
| Grace Argyle Ltd | Hospitality | 2014 |
| Grado AB Ltd | Hospitality | 2026 |
| Gradwell Group Limited | Professional & scientific | 2023 |
| Grafityp (UK) Limited | Manufacturing | 1987 |
| Grafton International Holdings Limited | Financial services | 2021 |
| Grafton International Limited | Wholesale & retail | 1996 |
| Grampian Growers (Services) Limited | Wholesale & retail | 1974 |
| Grand Gastronomy Limited | Hospitality | 2024 |
| Grand Union Canal Carrying Company Limited | Transport & logistics | 2015 |
| Grande Vision Event Planners Ltd | Hospitality | 2025 |
| Granfix Holdings Limited | Extraterritorial | 2016 |
| Granfix Products Limited | Extraterritorial | 2016 |
| Grangewood Motors Limited | Wholesale & retail | 2025 |
| Grantalexanderspv Limited | Real estate | 2020 |
| Graphic Wizard Limited | Administrative & support | 2008 |
| Grassroots Lawn Care Limited | Other services | 2022 |
| Gravitech Holdings Limited | Financial services | 2025 |
| Graycar Management Services Limited | Professional & scientific | 1998 |
| Graycar Properties Limited | Extraterritorial | 2010 |
| Grayfields Group Limited | Administrative & support | 2025 |
| Grayston House Limited | Real estate | 2002 |
| Great Barr Carpets Ltd | Wholesale & retail | 2018 |
| Greatmindz Technologies Limited | Information & communication | 2026 |
| Greedy Guts Food Ltd | Manufacturing | 2025 |
| Green & Wolvin Limited | Administrative & support | 2024 |
| Green and Mahadeo Properties Ltd | Real estate | 2021 |
| Green Castle Windows . COM Ltd | Manufacturing | 2026 |
| Green Frog Asset Management Limited | Energy | 2015 |
| Green Frog Bess Ltd | Professional & scientific | 2022 |
| Green Frog CNG Limited | Extraterritorial | 2018 |
| Green Frog Industries Limited | Energy | 2021 |
| Green Frog Operations Ltd | Administrative & support | 2024 |
| Green Frog Power (Gort Bess) Limited | Energy | 2023 |
| Green Frog Power (Gort) Limited | Professional & scientific | 2023 |