| GEL Training Limited | Administrative & support | 2019 |
| Gelgutiza Ltd | Wholesale & retail | 2025 |
| Gemac Industrial Supplies Limited | | 1968 |
| Gemini Assisted Living Limited | Administrative & support | 2015 |
| Gemini II Ltd | Professional & scientific | 2021 |
| General Road Services Limited | Construction | 1941 |
| Generation 5 Software Limited | Information & communication | 1984 |
| Generation Events Gloucestershire Ltd | Arts & recreation | 2015 |
| Genesis Automotive Ltd | Manufacturing | 2022 |
| Genesis Care Agency Limited | Administrative & support | 2019 |
| Genesis Holdings (Gloucester) Ltd | Professional & scientific | 2018 |
| Genesis Southwest Ltd | Construction | 2019 |
| Genesis Timber Engineering Ltd. | Construction | 1999 |
| Genius Equestrian Limited | Wholesale & retail | 2017 |
| Genius Procurement Ltd | Administrative & support | 2012 |
| Genus Nurseries and Plant Sourcing Ltd | Wholesale & retail | 2023 |
| Genus Softworks Limited | Wholesale & retail | 2001 |
| GEO Storm Guard Ltd | Construction | 2025 |
| Geoff Scott Ltd | Professional & scientific | 2023 |
| Geolingo Property Ltd | Real estate | 2023 |
| Geometric Construction Ltd | Construction | 2016 |
| George Smiff Ltd | Information & communication | 2026 |
| George Utility Services Ltd | Construction | 2020 |
| Georgina's Services Limited | Manufacturing | 2024 |
| Geotechnical Engineering Limited | Construction | 1961 |
| German Auto Glos Ltd. | Wholesale & retail | 2024 |
| German Car Commercial Ltd | Wholesale & retail | 2024 |
| German Car Service Ltd | Professional & scientific | 2024 |
| GET Ahead Physiotherapy Ltd | Health & social care | 2019 |
| GET Fork'D Ltd | Hospitality | 2025 |
| GET ME TOO Limited | Wholesale & retail | 2023 |
| GET SET Adventure Ltd | Administrative & support | 2025 |
| GF Associates Limited | Professional & scientific | 2007 |
| Gfbl Events Limited | Hospitality | 2023 |
| GFC Estates Ltd | Real estate | 2024 |
| GFH Events Ltd | Administrative & support | 2017 |
| GFH Plumbing & Heating Limited | Construction | 2017 |
| GGA Investments (SW) Ltd | Administrative & support | 2016 |
| GGC Members Limited | Hospitality | 2017 |
| GGS Holdings Ltd | Real estate | 2023 |
| Ggsoco Limited | Health & social care | 2023 |
| GH (Cheltenham) Management Company Limited | Real estate | 2005 |
| Ghostbusters Limited | | 1984 |
| Ghoststack Ltd | Wholesale & retail | 2025 |
| Giconcept Digital Ltd | Information & communication | 2026 |
| Giddynap Limited | Real estate | 2010 |
| Gilberts Campus Events Limited | Hospitality | 2024 |
| Gilead Healthcare Limited | Health & social care | 2022 |
| Gill Mobile Tyres Ltd | Wholesale & retail | 2026 |
| Gill Transport Group Ltd | Transport & logistics | 2024 |
| Gill Truck Centre Limited | Wholesale & retail | 2020 |
| Gill Ventures Ltd | Transport & logistics | 2026 |
| Gillandjammu Limited | Wholesale & retail | 2026 |
| Gillett Financial Planning Ltd | Financial services | 2011 |
| Gillman Electrical Group Limited | Professional & scientific | 2012 |
| Gillmans Electrical Limited | Wholesale & retail | 2021 |
| Gingerbread Solutions Ltd | Construction | 2009 |
| Gingers Beauty Ltd | Other services | 2015 |
| Gingers Hair Limited | Other services | 2026 |
| Gingiva Ltd | Health & social care | 2024 |
| Giovanna Lennox Books Limited | Arts & recreation | 2026 |
| Gitabyte Tech Ltd | Information & communication | 2023 |
| Gitc Ltd | Information & communication | 2020 |
| GL Communities | Health & social care | 2008 |
| GL Dining Limited | Hospitality | 2025 |
| GL Northgate Barber Shop Ltd | Other services | 2026 |
| GL Sams Barbers Ltd | Other services | 2023 |
| GL Training Services Limited | Administrative & support | 2018 |
| GL1 Property Services Limited | Real estate | 2014 |
| GL1 Building Services Limited | Other services | 2018 |
| GL1 Car Sales Ltd | Wholesale & retail | 2015 |
| GL1 Coffee Limited | Hospitality | 2025 |
| GL1 Ltd | Real estate | 2025 |
| GL2 Computer Solutions Ltd | Information & communication | 2008 |
| GL2TECH Limited | Information & communication | 2001 |
| GL3 Community Hub Ltd | Education | 1998 |
| GL3 Heating & Plumbing Ltd | Construction | 2017 |
| GL4 CIC | Arts & recreation | 2017 |
| Gladfield Court Management Company Limited | Real estate | 2008 |
| Gladius Motors Ltd | Wholesale & retail | 2025 |
| Gladline Logistics Limited | Transport & logistics | 2025 |
| Gladstone Management Co. Limited | Households | 1983 |
| Gladstones Clinic Limited | Health & social care | 2011 |
| Glamour Dolls Beauty & Aesthetics Ltd | Other services | 2020 |
| Glamour Dolls Beauty & Aesthetics Wholesale Ltd | Wholesale & retail | 2024 |
| Glance Health Care Limited | Administrative & support | 2015 |
| Glasscloud Ltd | Professional & scientific | 2025 |
| Gleam Housekeeping & Cleaning Ltd | Administrative & support | 2024 |
| Glevum Building & Maintenance Ltd | Construction | 2011 |
| Glevum Building Maintenance & Lettings Ltd | Construction | 2024 |
| Glevum Colonia Ltd | Real estate | 2017 |
| Glevum Electrical Ltd | Construction | 2019 |
| Glevum Family Estates Ltd | Real estate | 2024 |
| Glevum Food and Drink Services Ltd | Hospitality | 2024 |
| Glevum Holdings (Glos) Ltd | Financial services | 2025 |
| Glevum Investments Limited | Wholesale & retail | 1970 |
| Glevum Pest Control Ltd | Administrative & support | 2023 |
| Glevum Real Estate Limited | Real estate | 2019 |
| Glevum Ruby Limited | Hospitality | 2019 |
| Glevum Security Ltd. | Administrative & support | 2000 |