| Glamis Road TMC Limited | Households | 2026 |
| Glen Maye Freeholders Ltd | Households | 2012 |
| Glitter Works UK Ltd | Manufacturing | 2025 |
| Global Learning Together Limited | Education | 2025 |
| Global Retail International Ltd | Construction | 2021 |
| Gloplay Limited | Hospitality | 2012 |
| Go & Cycle Ltd | Education | 2024 |
| Go 2DAY Limited | Transport & logistics | 2006 |
| Go KAT ME Ltd | Wholesale & retail | 2023 |
| Go Local NW Ltd | Wholesale & retail | 2019 |
| Go Local NW PVT Ltd | Wholesale & retail | 2026 |
| Golden Idol Productions Ltd | Arts & recreation | 2024 |
| Golden Ninety Limited | Hospitality | 2022 |
| Goodzilla Limited | Wholesale & retail | 2024 |
| Gospel Construction Ltd | Construction | 2020 |
| GPS Aslaids and Design Ltd | Professional & scientific | 2012 |
| GR NB Bars Ltd | Hospitality | 2023 |
| Gracejobs Ltd | Health & social care | 2015 |
| Granby Advisory Ltd | Administrative & support | 2021 |
| Grand Tourist Ltd | Administrative & support | 2005 |
| Greasby Gardening Services Limited | Administrative & support | 2002 |
| Green Brock Ltd | Construction | 2017 |
| Green Chilli (Wirral) Ltd | Hospitality | 2019 |
| Green Cladding Ltd | Construction | 2025 |
| Greenbristol Ltd | Education | 2006 |
| Greener Vision Limited | Professional & scientific | 2015 |
| Greenleas Investments (Silverdale) Limited | Real estate | 2023 |
| Greenleas Investments Limited | Construction | 2018 |
| Greenrock Properties Limited | Real estate | 2006 |
| Greenshaw Limited | Other services | 2023 |
| Grennan Court Management Limited | Households | 1997 |
| Grid Engineering Services Limited | Energy | 2025 |
| Grist & Corf Properties Limited | Real estate | 2026 |
| Grosvenor Martial Arts and Youth Support CIC | Arts & recreation | 2021 |
| Grounded Somatic Healing CIC | Education | 2023 |
| Grove Medical Limited | Health & social care | 2015 |
| Groveland Management Limited | Real estate | 1987 |
| GS Rotary Ltd | Manufacturing | 2017 |
| GSL Builders Ltd | Construction | 2026 |
| GSL Industries Limited | Wholesale & retail | 2007 |
| GT Repairs Ltd | Other services | 2026 |
| Guardian Fire Solutions Limited | Public administration | 2025 |
| Gun-Why Consulting Ltd | Professional & scientific | 2020 |
| Gunwhy QS Limited | Professional & scientific | 2024 |
| Gynaecology and Infertility Health Limited | Health & social care | 2014 |
| H Murray Properties Ltd | Real estate | 2025 |
| H&H Joinery and Construction Ltd | Construction | 2025 |
| H&T Training Ltd | Education | 2021 |
| H.I.H. Solutions Ltd | Administrative & support | 2020 |
| Haigh Hall Hotel Limited | Hospitality | 2015 |
| Hairworld Wirral Ltd | Other services | 2019 |
| Halo NW Facilities Ltd | Administrative & support | 2024 |
| Hamilton Square Auctioneers Ltd | Professional & scientific | 2025 |
| Hanna's Brow Bar Ltd | Other services | 2025 |
| Happy Garden Wallasey Limited | Hospitality | 2025 |
| Happy Snacks Healthier Vending Ltd | Wholesale & retail | 2026 |
| Happy Soles Foot Clinic Ltd | Health & social care | 2020 |
| Hardman's (Electrical & T.V.) Limited | Real estate | 1970 |
| Harmax Refrigeration Limited | Construction | 2015 |
| Harmony Tile Co Limited | Wholesale & retail | 2024 |
| Harnall Oak Limited | Manufacturing | 2024 |
| Harnel Property Limited | Real estate | 2024 |
| Harneldevelopments Ltd | Construction | 2022 |
| Harper's Catering Limited | Hospitality | 2017 |
| Harris Rendering & Plastering Ltd | Construction | 2023 |
| Harrison Horncastle Limited | Administrative & support | 2017 |
| Harrison Safety Management Ltd | Professional & scientific | 2022 |
| Harry Style Wallasey Ltd | Other services | 2025 |
| Harry's Amusements Limited | Arts & recreation | 2015 |
| Harwood Property Solutions Ltd | Real estate | 2024 |
| Hashtag Digital Ltd | Information & communication | 2025 |
| Hawksmith Ltd | Real estate | 2021 |
| HC Sports & Entertainment Limited | Arts & recreation | 2025 |
| Headteacher's Lodge Management Company Limited | Real estate | 1995 |
| Health HUT Wallasey Ltd | Hospitality | 2024 |
| Healthwatch Wirral CIC | Information & communication | 2013 |
| Heat Home Merseyside Ltd | Construction | 2022 |
| Heffy Consultancy and Catering Ltd | Hospitality | 2023 |
| Helen Sweeney HR Consultancy Ltd | Administrative & support | 2017 |
| Hellas Coffee Ltd | Hospitality | 2025 |
| Henshall Trading Limited | Hospitality | 2016 |
| Heribt Limited | Health & social care | 2023 |
| Herringbone House Ltd | Information & communication | 2026 |
| Hertford Property Limited | Administrative & support | 2011 |
| Heydrive Ltd | Wholesale & retail | 2025 |
| Hhrz 8 Limited | Hospitality | 2025 |
| Hidden Gems Cafe Ltd | Hospitality | 2026 |
| Hiflyballoons Ltd | Wholesale & retail | 2026 |
| Hildyard Surveying Solutions Ltd | Other services | 2021 |
| Hitch Marketing Limited | Professional & scientific | 2011 |
| Hitched Communities Ltd | Health & social care | 2012 |
| Hitemlarge Entertainment Ltd | Arts & recreation | 2020 |
| HJ Accountants Limited | Professional & scientific | 2024 |
| HJA Retail Ltd | Wholesale & retail | 2026 |
| HLJ45 Limited | Health & social care | 2024 |
| Holandés Limited | Professional & scientific | 2025 |
| Holland House (New Brighton) Ltd | Hospitality | 2018 |
| Holly Aerospace Limited | Manufacturing | 2016 |
| Home Delights Ltd | Wholesale & retail | 2014 |
| Home Heating Systems Ltd | Construction | 2009 |