| GFL Properties Limited | Real estate | 2017 |
| GG Equipment Limited | Wholesale & retail | 2022 |
| Ghoprop Ltd | Real estate | 2019 |
| Gibirish Limited | Real estate | 2016 |
| Giddings Decorators Ltd | Construction | 2012 |
| Gifts for HIM and HER Limited | Wholesale & retail | 2025 |
| Ginhouse Beverages Limited | Hospitality | 2015 |
| GIO Property Holdings Ltd | Households | 2024 |
| Giovanni Clothing Ltd | Wholesale & retail | 2025 |
| Gipfel Electrical Holdings Limited | Financial services | 2022 |
| GJ Investments Limited | Financial services | 2021 |
| GK Alpha Investment Group Ltd | Professional & scientific | 2026 |
| GK Alpha Property Management Ltd | Real estate | 2022 |
| GKP Ventures Ltd | Information & communication | 2025 |
| Glacier Itech Consulting Limited | Information & communication | 2025 |
| Glam Girls Beauty Limited | Health & social care | 2025 |
| Glan Gwyrfai | Financial services | 2022 |
| Glaslyn Leisure Limited | Hospitality | 2000 |
| Glass Northwest Ltd | Manufacturing | 2022 |
| Glazewall Installations (NW) Ltd | Construction | 2018 |
| Gleave Lift Services Limited | Professional & scientific | 2006 |
| Glen Affric Brewery & Beverages Ltd | Manufacturing | 2021 |
| Glen Affric Brewery Ltd | Extraterritorial | 2014 |
| Glen Affric TAP Rooms Ltd | Hospitality | 2014 |
| GLH Projects Limited | Real estate | 2018 |
| Global Architectutral Aluminium Systems Ltd | Professional & scientific | 2019 |
| Globe House Residents Management Company Limited | Real estate | 2015 |
| Gloriouslion Trading Limited | Wholesale & retail | 2026 |
| GMB Electrical Wirral Ltd | Construction | 2026 |
| GMC Commercial Property Ltd | Real estate | 2023 |
| GMC Lettings Limited | Real estate | 2024 |
| GMC Property Development Limited | Construction | 2023 |
| GMC Property Holdings Limited | Financial services | 2024 |
| GMC Property Investments Ltd | Real estate | 2017 |
| GMC Property Management Ltd | Real estate | 2017 |
| GMC Property Solutions Ltd | Construction | 2020 |
| GMC Serviced Accommodation Limited | Hospitality | 2024 |
| Gmmpsd T/A Chester Street Newsagent Ltd | Wholesale & retail | 2026 |
| GMT Sales Limited | Administrative & support | 2025 |
| Go Direct Lettings (Franchising) Ltd | Real estate | 2011 |
| Go Local Store Bebington Ltd | Wholesale & retail | 2025 |
| Go Mini Local Store Ltd | Wholesale & retail | 2024 |
| Goble Property Holdings Ltd | Real estate | 2026 |
| Golbourne Limited | Construction | 2024 |
| Gold Crest Food & Beverages Limited | Wholesale & retail | 1995 |
| Golden Fish & Kebab Wirral Ltd | Hospitality | 2024 |
| Goldhurst Ltd | Health & social care | 2016 |
| Golf Direct Online Limited | Wholesale & retail | 2013 |
| Good Fellas Barbers (Birkenhead) Ltd | Other services | 2019 |
| Good Foundations Limited | Health & social care | 2005 |
| GPZ Holding Ltd | Real estate | 2021 |
| Grab N Go Birkenhead Ltd | Wholesale & retail | 2025 |
| Grab Star Delivery Limited | Hospitality | 2022 |
| Gracious Development Group Ltd | Professional & scientific | 2018 |
| Grade 2 Structural Repairs Limited | Construction | 1996 |
| Gradoco Ltd | Professional & scientific | 2016 |
| Grampian Limited | Wholesale & retail | 2020 |
| Grand-Grande Ltd | Wholesale & retail | 2025 |
| Grange Road West News Ltd | Wholesale & retail | 2026 |
| Grange Road Wirral Store Limited | Wholesale & retail | 2025 |
| Grateful Heart Companion Ltd | Health & social care | 2026 |
| Graycen Limited | Real estate | 2014 |
| Greek Crave Ltd | Hospitality | 2025 |
| Green Chillies Kerala Ltd | Hospitality | 2024 |
| Green Consulting (NW) Ltd | Professional & scientific | 2022 |
| Green ELK Property Limited | Real estate | 2025 |
| Green Environmental Installations Ltd | Other services | 2023 |
| Green Gastro Ltd | Hospitality | 2025 |
| Green JAM Creatives Ltd | Wholesale & retail | 2025 |
| Green Jobs Academy Ltd | Other services | 2023 |
| Green Lane Fish N Chips Ltd | Hospitality | 2023 |
| Greengent Co Ltd | Wholesale & retail | 2024 |
| Greenhorse Ltd | Wholesale & retail | 2026 |
| Greystone (NW) Limited | Real estate | 2016 |
| Grills & Slices Ltd | Hospitality | 2026 |
| Groenewald Limited | Health & social care | 2020 |
| Ground Marketing Ltd | Information & communication | 2026 |
| Group Smokie’S Ltd | Hospitality | 2024 |
| Groupacre Limited | Real estate | 1987 |
| GSI Pharma Limited | Wholesale & retail | 2009 |
| GSI Property Holdings Limited | Real estate | 2018 |
| GT Brows and Aesthetics Limited | Other services | 2017 |
| Gunawardana & Company UK Ltd | Manufacturing | 2024 |
| Guzel Restaurant Limited | Hospitality | 2018 |
| Gwel Eryri Investment Company | Financial services | 2018 |
| Gwel Y Fenai Investment Company | Financial services | 2018 |
| GWYNTWR1386 Healthcare CIC | Administrative & support | 2021 |
| H Cowley Construction Ltd | Construction | 2026 |
| H G Vess Security Systems Ltd | Administrative & support | 2011 |
| H&Finn's Properties Ltd | Real estate | 2024 |
| H.W.C.G.S. Care Limited | Health & social care | 2000 |
| H3 Enterprises Limited | Other services | 2019 |
| Hair Caribbean Ltd | Other services | 2019 |
| Hair Transform Limited | Other services | 2018 |
| Haku Ltd | Hospitality | 2018 |
| Hala Market Liverpool Ltd | Wholesale & retail | 2025 |
| Halco 8560 Limited | Construction | 2018 |
| Haljon Limited | Transport & logistics | 1991 |
| Halo CPA Programme Ltd | Education | 2019 |
| Halos Cleaning and Ironing Ltd | Administrative & support | 2026 |