| GES Brickwork Ltd | Construction | 2026 |
| GET Group (South-West) Ltd | Real estate | 2022 |
| GET Smart Energy Services Ltd | Professional & scientific | 2013 |
| GET Social Ltd | Manufacturing | 2020 |
| Getbaked Brownies Limited | Hospitality | 2021 |
| Getratec Limited | Professional & scientific | 2023 |
| Getting in Ltd | Professional & scientific | 2020 |
| Gettus Limited | Other services | 2003 |
| Gevlen Limited | Transport & logistics | 2011 |
| GG Builders (Berkshire) Limited | Construction | 2023 |
| GG-000-341 Limited | Real estate | 2023 |
| GG-657-366 Limited | Real estate | 2022 |
| GGK Solutions Ltd | Construction | 2009 |
| GH Construction Ltd | Construction | 2025 |
| GH Newmarch Limited | Professional & scientific | 2023 |
| Gheric Limited | Transport & logistics | 2021 |
| GHN UK Services Ltd | Wholesale & retail | 2026 |
| GHS (UK) Limited | Information & communication | 2004 |
| GHS Global Relocation U.K. Limited | Financial services | 2000 |
| Gibbs Greenphalt Limited | Manufacturing | 2014 |
| Gibbs Property Letting Limited | Real estate | 2011 |
| Gidernest Limited | Health & social care | 2021 |
| Giffard Newton & Sons Limited | Manufacturing | 2000 |
| Gift Cosmestics Ltd | Other services | 2024 |
| Gifted Care Ltd | Health & social care | 2017 |
| Gifthorse Promotions Limited | Manufacturing | 1996 |
| Gigaradio Ltd | Information & communication | 2026 |
| Gilbert Composites Ltd | Professional & scientific | 2026 |
| Gilberts Hill School Management Company Limited | Households | 2003 |
| Gild Consulting Ltd | Professional & scientific | 2026 |
| Gild Logistics Ltd | Transport & logistics | 2023 |
| Gill & DAU Limited | Construction | 2025 |
| Gillz Logistics Ltd | Transport & logistics | 2026 |
| Gingers the Edit Ltd | Other services | 2025 |
| Gipsy Lane Valeting Centre Ltd | Wholesale & retail | 2025 |
| Giraffe Digital Ltd | Professional & scientific | 2025 |
| GJM Groundwork Ltd | Construction | 2021 |
| GJO Properties Ltd | Real estate | 2021 |
| GK Commercial Tyres Ltd | Wholesale & retail | 2026 |
| GK IT Professionals Ltd | Information & communication | 2019 |
| GK Roofing Services Ltd | Construction | 2016 |
| GK Site Engineering Limited | Other services | 2015 |
| GK VEG ND Spices Limited | Wholesale & retail | 2025 |
| GKD Project Management Limited | Professional & scientific | 2017 |
| GKN Storage Limited | Transport & logistics | 2023 |
| GKR Project Management Limited | Professional & scientific | 2020 |
| GL1 Building and Maintenance Ltd | Construction | 2024 |
| GLA Holding Limited | Financial services | 2017 |
| Gladiators Security & Services Limited | Wholesale & retail | 2013 |
| Glamorose Cakes Ltd | Manufacturing | 2025 |
| Glasslit Limited | Administrative & support | 2021 |
| Glaze Conservation Ltd | Professional & scientific | 2024 |
| Gleam and Gloss Luxury Valeting Ltd | Administrative & support | 2024 |
| Glenmore Developments (Swindon) Limited | Real estate | 2025 |
| Glenn TS Holdings Limited | Financial services | 2024 |
| Glennerster Consulting Limited | Professional & scientific | 2016 |
| Glenwood Accountants Limited | Professional & scientific | 2023 |
| Glenwood Property Investments Limited | Extraterritorial | 2005 |
| Glevum Commercials Limited | Wholesale & retail | 2001 |
| Glevum Logistics Limited | Extraterritorial | 2012 |
| Glevum Transport Limited | Transport & logistics | 2008 |
| Gley Ltd | Financial services | 2019 |
| Global Akeu Limited | Professional & scientific | 2025 |
| Global Career Consulting VST Ltd | Professional & scientific | 2025 |
| Global Cyber Consulting Limited | Information & communication | 2019 |
| Global Display Solutions Limited | Manufacturing | 2009 |
| Global Drink Sales Limited | Wholesale & retail | 2022 |
| Global Fast Fuel Ltd | Wholesale & retail | 2014 |
| Global Football Enterprises Limited | Arts & recreation | 2017 |
| Global Fusion Foods Ltd | Wholesale & retail | 2024 |
| Global Help Inspiration CIC | Professional & scientific | 2025 |
| Global Investments and Savings Limited | Information & communication | 2025 |
| Global Mosaic Productions Limited | Arts & recreation | 2025 |
| Global Next Steps Ltd | Administrative & support | 2024 |
| Global Smart Rail Limited | Construction | 2017 |
| Global Source Dynamics Ltd | Information & communication | 2024 |
| Global Specialist Cars Ltd | Wholesale & retail | 2018 |
| Global Talent Coaching Limited | Professional & scientific | 2012 |
| Global Vehicle Transports & Recovery Ltd | Wholesale & retail | 2025 |
| Globe of Swindon Ltd | Wholesale & retail | 2025 |
| Globe Park Management Limited | Real estate | 1982 |
| Glory DID Healthcare Ltd | Health & social care | 2023 |
| Glory of GOD Church Ltd | Other services | 2013 |
| Glotekk Limited | Health & social care | 2010 |
| Gloucester Business Park Management Limited | Real estate | 1996 |
| Gloucestershire and Wiltshire Incorporated Law Society | Other services | 1884 |
| Glow Cable Guard Limited | Wholesale & retail | 2025 |
| Glow Technical Solutions Ltd | Wholesale & retail | 2020 |
| Glow-Warm Central Heating Limited | | 1985 |
| GLT Associates Ltd | Information & communication | 2024 |
| GLW Technology Consultancy Ltd | Information & communication | 2017 |
| Glycomindhealth Ltd | Health & social care | 2026 |
| Glynn Rolfe Limited | Real estate | 2004 |
| GM Health Limited | Health & social care | 2023 |
| GM Vehicle Services Ltd | Wholesale & retail | 2023 |
| GM2 Leadership Training Group Ltd | Professional & scientific | 2025 |
| Gman Pipework Limited | Professional & scientific | 2016 |
| Gmdr Consulting Ltd | Professional & scientific | 2019 |
| Gmec Developments and Lettings Limited | Real estate | 2018 |
| Gmgh Limited | Information & communication | 2010 |