| GJN Supplies (Holdings) Limited | Professional & scientific | 2005 |
| GJS Midlands Limited | Administrative & support | 2005 |
| GL Transport Ltd | Transport & logistics | 2019 |
| Glam Rasoi Limited | Hospitality | 2025 |
| Glatzel Properties Limited | Real estate | 2024 |
| Glen Durrant Limited | Arts & recreation | 2015 |
| Glenfinnan Investment Partners Limited | Financial services | 2020 |
| Glimmers Store Limited | Wholesale & retail | 2024 |
| Global Fit Services Limited | Wholesale & retail | 2025 |
| Global Removals Ltd | Transport & logistics | 2024 |
| Global Search Marketing Limited | Information & communication | 2014 |
| GMC Independent Traders Ltd | Wholesale & retail | 2025 |
| GMD Plating Ltd | Manufacturing | 2022 |
| GMS Caretaking Services Limited | Administrative & support | 2008 |
| GMS Group of Companies Limited | Professional & scientific | 2012 |
| GMS Property Services Ltd | Administrative & support | 1994 |
| GMS Realisations Group Limited | Administrative & support | 2024 |
| GMS Recovery Services Ltd | Administrative & support | 2005 |
| GMS Security Services Limited | Administrative & support | 2005 |
| GNC Enterprise Ltd | Wholesale & retail | 2016 |
| GNJ Properties Limited | Real estate | 2025 |
| Golden Nest West Ltd | Real estate | 2025 |
| Golden Tails Pet Services Ltd | Other services | 2024 |
| Golden Thread Academy Limited | Administrative & support | 2026 |
| Goldthorn Lodge Limited | Health & social care | 2013 |
| Goldway Global Ltd | Wholesale & retail | 2025 |
| Gone Coastal Ltd | Real estate | 2019 |
| Goodwin Smith Cain Ltd | Financial services | 2024 |
| Gordon Holdings Limited | Administrative & support | 1999 |
| Gourmet Kitchen (Brierley Hill) Ltd | Hospitality | 2017 |
| GP Auto Services Limited | Wholesale & retail | 2009 |
| Gracilior Contracting Ltd | Construction | 2017 |
| Graham Bryce Jewellers Limited | Wholesale & retail | 2010 |
| Graham Dale Photography Limited | Professional & scientific | 2007 |
| Graham Hamer Ltd | Wholesale & retail | 2022 |
| Graham Jenkins Limited | Wholesale & retail | 2026 |
| Grahama Ltd | Hospitality | 2025 |
| Granary Farm (Holdings) Ltd | Financial services | 1987 |
| Grand Entrance Products Ltd | Manufacturing | 2015 |
| Gray Electrical Contractors (Commercial) Ltd | Construction | 2022 |
| Gray MAG Property Limited | Real estate | 2021 |
| Great JOB Abigail Limited | Real estate | 2020 |
| Great Oak Homes Limited | Real estate | 2019 |
| Greatness From Small Beginnings Ltd | Arts & recreation | 2023 |
| Green Safe Investments Ltd | Financial services | 2024 |
| Green-Ie Ltd | Other services | 2009 |
| Green-Oak Developments Ltd | Real estate | 2014 |
| Greenleaf Property Group Ltd | Real estate | 2023 |
| Greenline Cars Ltd | Wholesale & retail | 2017 |
| Greenwall Environmental Evolution ( Cornwall ) Ltd | Other services | 2022 |
| Greenwall Environmental Pollution Control Ltd | Other services | 2023 |
| Greenwell Gleeson Limited | Administrative & support | 2000 |
| Greg Blackham Interiors Limited | Construction | 2021 |
| Gregg & Townsend Properties Limited | Real estate | 2014 |
| Greswolde Building Projects Limited | Construction | 2000 |
| Greyrose Ltd | Professional & scientific | 2024 |
| Grid Edge Limited | Information & communication | 2016 |
| Griff Media Limited | Professional & scientific | 2018 |
| Griffiths & Pegg Holdings Limited | Financial services | 2022 |
| Griffiths & Pegg Limited | Professional & scientific | 2013 |
| Griffiths Family Properties Ltd | Real estate | 2019 |
| Grill Land Ltd | Hospitality | 2019 |
| Grinnall Limited | Extraterritorial | 2007 |
| Grinsty Holdings Limited | Real estate | 2000 |
| Ground Force Construction Limited | Construction | 2015 |
| Groundworkers Responsible Ltd | Construction | 2021 |
| Groundworks (Drilling and Grouting) Limited | | 1979 |
| Groundworks (Dudley) Limited | | 1962 |
| Grove Employee Solutions Ltd | Administrative & support | 2023 |
| GSA Auto Salvage and Spares Limited | Wholesale & retail | 2020 |
| GSA Medics Ltd | Health & social care | 2021 |
| GSK Accounts Services Ltd | Professional & scientific | 2023 |
| GSK Global Ltd | Wholesale & retail | 2025 |
| Gsmj Technology Ltd | Information & communication | 2024 |
| GTS Tyres Limited | Wholesale & retail | 2016 |
| Guardian Wills Limited | Other services | 2016 |
| Guardpost Security Limited | Administrative & support | 2017 |
| Guards Red Limited | Extraterritorial | 2023 |
| Guest Davidson Wealth Management Solutions Limited | Financial services | 2008 |
| Gurmat Sangeet Academy Limited | Arts & recreation | 2019 |
| GUY Francis Specialist Cars Ltd | Wholesale & retail | 2014 |
| Guys JDM Limited | Wholesale & retail | 2025 |
| Gwyn Thomas Limited | Professional & scientific | 1976 |
| Gwyn Thomas Property Limited | Real estate | 2021 |
| H & S Signs Ltd | Extraterritorial | 2011 |
| H T Angling Limited | Wholesale & retail | 2015 |
| H&Sk Group Ltd | Transport & logistics | 2025 |
| H2O Mobile Valeting & Pressure Washing Ltd | Wholesale & retail | 2024 |
| H2O Vape Bar Ltd | Wholesale & retail | 2022 |
| HABA6 Investments Ltd | Real estate | 2024 |
| Habba-Dasha-Doo Limited | Wholesale & retail | 2017 |
| Haberdash Hub Limited | Manufacturing | 2025 |
| Hadi&T&J Ltd | Wholesale & retail | 2025 |
| Halas Manufacturing Limited | Manufacturing | 1987 |
| Halcyon Chota Ltd | Professional & scientific | 2021 |
| Hallford Refurbishments Limited | Construction | 1992 |
| Halloy Limited | Extraterritorial | 2011 |
| Halo Salt Centre Limited | Health & social care | 2015 |
| Hammond Organic Products Limited | Extraterritorial | 1978 |
| Hamsol Limited | Extraterritorial | 1985 |