| Geoday Electrical Ltd | Construction | 2016 |
| Geoff Roberts Ltd | Manufacturing | 2016 |
| Geoff Robertshaw Limited | Professional & scientific | 2014 |
| George Murray Holdings Limited | Financial services | 1973 |
| Geotech Nicholls Limited | Professional & scientific | 2023 |
| Geraint Jones Media Limited | Information & communication | 2018 |
| Gerallt Davies Plumbing and Heating Services Limited | Construction | 2015 |
| GET Moving Estate Agents Limited | Real estate | 2017 |
| GET the Action Limited | Professional & scientific | 2025 |
| GET TOM Ltd | Professional & scientific | 2025 |
| GFL GAS Consultancy Limited | Professional & scientific | 2020 |
| GGS Business Services Limited | Professional & scientific | 2018 |
| GHM Trading Limited | Wholesale & retail | 2019 |
| Ghost Automation Ltd | Information & communication | 2025 |
| Gibbons Joinery Limited | Construction | 2017 |
| Giggles and Games Limited | Arts & recreation | 2012 |
| Gillon Enterprises Ltd | Manufacturing | 2021 |
| Gillory & Co Ltd | Wholesale & retail | 2025 |
| Gina's Glow & Glamour Limited | Other services | 2025 |
| Gittins & Co. Wealth Management Holdings Ltd | Financial services | 2021 |
| Gittins & Co. Wealth Management Ltd | Financial services | 2021 |
| Gittins Mcdonald Limited | Professional & scientific | 2018 |
| Gizmo Group Limited | Professional & scientific | 2020 |
| GJL (Overton) Properties Limited | Real estate | 2018 |
| GJN Property Limited | Real estate | 2022 |
| GJP Ventures Ltd | Other services | 2016 |
| GL Morris Consulting Limited | Professional & scientific | 2023 |
| Gladstone House Management Company NO.2 Limited | Households | 2006 |
| Glidewood Limited | Construction | 1998 |
| Glimoraeve Ltd | Hospitality | 2025 |
| Global Attractions Ltd | Arts & recreation | 1994 |
| Global Corrosion Services Ltd | Administrative & support | 2010 |
| Global Lanka Ltd | Hospitality | 2024 |
| Global Path Notion Ltd | Wholesale & retail | 2025 |
| Global Play Solutions Ltd | Construction | 2025 |
| Global Travel Worldwide (Wrexham) Limited | Administrative & support | 2019 |
| Global Travel Worldwide Holdings Limited | Financial services | 2019 |
| Globaltec Innovation Ltd | Manufacturing | 2015 |
| Globe Project Group Limited | Construction | 2023 |
| Glow Beauty Limited | Other services | 2004 |
| Glow UP With Beth and Rachael CYF | Other services | 2023 |
| Glyn Alyn Limited | Real estate | 2015 |
| Glyn Holmes Construction Limited | Construction | 2010 |
| Glyn Wylfa Limited | Real estate | 2010 |
| Glyndwr Holdings Ltd | Financial services | 2020 |
| Glyndwr Innovations Limited | Professional & scientific | 1995 |
| Glyndwr Services Limited | Administrative & support | 2019 |
| GM Lockers Contractors Ltd | Construction | 2025 |
| Gmmep Ltd | Professional & scientific | 2024 |
| GMN Refrigeration Limited | Professional & scientific | 2019 |
| GMP Compliance Limited | Other services | 2025 |
| GNC Groundworks & Plant Hire Limited | Construction | 2013 |
| GNH Consult Ltd | Professional & scientific | 2024 |
| Go Homeserv Ltd | Construction | 2021 |
| Goch and Company Ltd | Manufacturing | 2013 |
| Godfrey Assets Limited | Real estate | 2019 |
| Goke Healthcare Ltd | Health & social care | 2026 |
| Gold 'N' Brown Limited | Administrative & support | 2004 |
| Golden Crest Market Ltd | Wholesale & retail | 2025 |
| Gomez & Lopez Ltd | Administrative & support | 2022 |
| Goodsimps Ltd | Wholesale & retail | 2023 |
| Gordon Mytton Developments Limited | Real estate | 1977 |
| Gorton Brothers Ltd | Transport & logistics | 2019 |
| Goteq Group Ltd | Financial services | 2024 |
| Gourton Properties Limited | Real estate | 2002 |
| Gower Homes Limited | Construction | 1975 |
| GPB Agencies Limited | Wholesale & retail | 2010 |
| Gpmd Greasley Property Maintenance & Development Ltd | Construction | 2026 |
| GPW Engineering Limited | Professional & scientific | 2007 |
| GPW Tax and Law Ltd | Professional & scientific | 2003 |
| GR Diving Services Limited | Professional & scientific | 2012 |
| Graham Jones Contract Lifting Limited | Administrative & support | 2015 |
| Graham Roberts & Helen Gorton Ltd | Agriculture & fishing | 2026 |
| Graig Escapes Limited | Hospitality | 2021 |
| Grand Horizon Holdings Ltd | Financial services | 2025 |
| Grand Horizon Homeware Ltd | Wholesale & retail | 2025 |
| Grand Horizon Outdoors Ltd | Wholesale & retail | 2025 |
| Grant Howard Gardening Services Limited | Other services | 2016 |
| Grapefruit Limited | Information & communication | 2024 |
| Graphic Office Systems Ltd | Administrative & support | 2023 |
| Graphtec (G.B.) Limited | Wholesale & retail | 1998 |
| Grason Real Estate Holdings Limited | Real estate | 2024 |
| Gratton Property (Whitchurch) Limited | Real estate | 2009 |
| Great Hall Management Limited | Real estate | 2014 |
| Green Circle Freight Forwarding Ltd | Transport & logistics | 2022 |
| Green Door Holdings Ltd | Financial services | 2021 |
| Green Flow Screed Ltd | Transport & logistics | 2026 |
| Green Goat Limited | Construction | 2010 |
| Green Planet Engineering Limited | Construction | 2023 |
| Green Planet Engineering Services Limited | Construction | 2015 |
| Green Rock Manufacturing Group Ltd | Manufacturing | 2021 |
| Green Scene Group Ltd | Construction | 2012 |
| Green SOL Enterprises Ltd | Professional & scientific | 2024 |
| Green Team Exteriors Ltd | Construction | 2021 |
| Green Valley Solutions Ltd | Professional & scientific | 2014 |
| Greener Building Solutions Limited | Construction | 2024 |
| Greener Properties Limited | Real estate | 2022 |
| Greener Solutions Multi-Trade Limited | Construction | 2018 |
| Greenfields (Tudor Drive) Management Ltd | Other services | 2017 |
| Greenframe Builders Ltd | Construction | 2025 |