| Gardenskill Property Limited | Real estate | 2026 |
| Gardner Driving Services Limited | Administrative & support | 2010 |
| Gardner's Grafters Ltd | Transport & logistics | 2026 |
| Garvey Civils Limited | Construction | 2021 |
| Gary Bateman BMS Ltd | Education | 2025 |
| Gary Byng & Sons Holdings Ltd | Professional & scientific | 2005 |
| Gateway Electronic Components Limited | Wholesale & retail | 2000 |
| Gatling Ltd | Information & communication | 2025 |
| GBN Investments Limited | Real estate | 2015 |
| Gbnl Holdings Limited | Financial services | 2021 |
| GBP Corporation Limited | Other services | 2024 |
| GCJ Homes Limited | Real estate | 2024 |
| Gcocei Ltd | Wholesale & retail | 2018 |
| Gearbox Services Limited | Wholesale & retail | 2026 |
| Gearlock UK Ltd | Wholesale & retail | 2024 |
| Gemini Environmental Markets Limited | Financial services | 2008 |
| Gemini Markets Limited | Professional & scientific | 2008 |
| Gemma Sewell Ltd | Professional & scientific | 2018 |
| Gemporia Craft Limited | Wholesale & retail | 2019 |
| Gemporia Holdings Limited | Financial services | 2022 |
| Gemporia Limited | Wholesale & retail | 2007 |
| Gemporia Partnership Limited | Financial services | 2006 |
| Gemporia Ventures Limited | Professional & scientific | 2015 |
| Gems on Site Limited | Construction | 2026 |
| GEN State Properties Ltd | Real estate | 2023 |
| Genee Group Limited | Education | 2010 |
| Genee World International Limited | Wholesale & retail | 2018 |
| Gerald Spencer Limited | Professional & scientific | 2021 |
| German and Prestige Ltd | Wholesale & retail | 2022 |
| GET Sett Ltd | Professional & scientific | 2024 |
| Getd Partnership Ltd | Other services | 2022 |
| Gethen Associates Limited | Professional & scientific | 2017 |
| GF Retailer Limited | Transport & logistics | 2021 |
| GG Total Care Ltd | Real estate | 2018 |
| GGG Irrigation Limited | Construction | 2002 |
| Ggtrees Limited | Administrative & support | 2023 |
| Ghent Developments Limited | Extraterritorial | 2018 |
| GHN (COT Lane) Limited | Real estate | 2021 |
| GHN Property (Market Street) Limited | Real estate | 2022 |
| GHN Property Developments Limited | Construction | 2021 |
| GHN Sports & Classic Cars Limited | Wholesale & retail | 2021 |
| Giant (Wales) Limited | Wholesale & retail | 2014 |
| Giants Cave Ltd | Agriculture & fishing | 2025 |
| Gibbon Graphics Limited | Professional & scientific | 2020 |
| GIG Juice Limited | Information & communication | 2020 |
| Gigi Interiors Ltd | Construction | 2024 |
| Giles GAS Limited | Construction | 2021 |
| Giles Plumbing Services Limited | Construction | 2022 |
| GIN Properties Limited | Real estate | 2023 |
| Ginar Limited | Construction | 2022 |
| Ginsbury Electronics Limited | Administrative & support | 2017 |
| Girls GET Social CIC | Hospitality | 2025 |
| GJE Holdings Ltd | Professional & scientific | 2018 |
| GJE Properties Limited | Construction | 2019 |
| GJL Mortgages Limited | Financial services | 2017 |
| GJS Landscaping Limited | Administrative & support | 2020 |
| GKF Property Limited | Real estate | 2017 |
| GKX Transport Ltd | Transport & logistics | 2018 |
| Glass Bottom Productions Ltd | Information & communication | 2025 |
| Glasson Financial Consultancy Services Limited | Professional & scientific | 2017 |
| Glastonbeoley Community Interest Company | Arts & recreation | 2020 |
| Glaw Ffres Ltd | Extraterritorial | 2018 |
| Glixtone Ltd | Administrative & support | 2010 |
| Global Facility Management Solutions Ltd | Administrative & support | 2017 |
| Global Manufacturing Solutions Ltd | Manufacturing | 2019 |
| Global Sunshine Retail Store Limited | Wholesale & retail | 2026 |
| Global Tool Design Solutions Ltd | Professional & scientific | 2020 |
| Global Tooling Support Ltd | Manufacturing | 2015 |
| Global Vision for Britain Limited | Administrative & support | 2006 |
| Globurn UK Limited | Information & communication | 2026 |
| Gloria Spring Limited | Construction | 2025 |
| Gloves'N'Stuff Limited | Wholesale & retail | 2004 |
| Glyn TM Ltd | Transport & logistics | 2018 |
| Go Everywhere Ltd | Information & communication | 2025 |
| Go VMS Limited | Professional & scientific | 2022 |
| GO4MEDIA Ltd | Information & communication | 2025 |
| Gold Lion Promotions Limited | Administrative & support | 2019 |
| Gold Star GAS Services Ltd. | Construction | 2017 |
| Golden Cross Dining Limited | Hospitality | 2024 |
| Golden Dragon Property Investments Ltd | Real estate | 2019 |
| Golden LI Limited | Real estate | 2025 |
| Golden Reel Angling Ltd | Arts & recreation | 2016 |
| Golden UK Deals Ltd | Wholesale & retail | 2025 |
| Goldrick Properties Limited | Real estate | 2024 |
| Goldstar PJM Ltd | Construction | 2022 |
| Golf Pairs Tour Ltd | Extraterritorial | 2016 |
| Good Will Follow Limited | Professional & scientific | 2023 |
| Goodturn Engineering Holdings Limited | Professional & scientific | 2005 |
| Goodturn Engineering Limited | Professional & scientific | 2000 |
| Gorcott Hall Limited | Other services | 2011 |
| Gordon Fielder Cars Limited | Wholesale & retail | 2017 |
| Gordon Moody Association | Health & social care | 2007 |
| Gordon Moody Trading Limited | Education | 2024 |
| Gorilla Storage Ltd | Transport & logistics | 2023 |
| Gosal & SON UK Limited | Wholesale & retail | 2023 |
| Gosal Estates Ltd | Real estate | 2026 |
| Gosal Holdings Ltd | Administrative & support | 2021 |
| Goulding Media Limited | Professional & scientific | 2015 |
| Governing for Ambition CIC | Education | 2019 |
| GP Fibre Limited | Information & communication | 2022 |