| George James Recruiting Ltd | Professional & scientific | 2024 |
| George Morris Developments Ltd | Construction | 2021 |
| George Pennington Properties Ltd | Households | 2019 |
| George Pink Limited | Real estate | 2026 |
| George Wood & Sons (Enfield) Limited | Manufacturing | 1937 |
| George Wood & Sons Holdings Limited | Professional & scientific | 1981 |
| Georgiev Limited Edition Ltd | Transport & logistics | 2015 |
| Georjaks Transport Ltd | Administrative & support | 2015 |
| Geosense Limited | Manufacturing | 2013 |
| Geothermal Supplies Limited | Manufacturing | 2005 |
| Gerald Roberts International Ltd | Professional & scientific | 2019 |
| Gerda Facilities Services Ltd. | Manufacturing | 2004 |
| Gerda Security Holdings Limited | Professional & scientific | 2005 |
| Gerda Security Products Limited | Other services | 1997 |
| Gero-Rojo Holdings Limited | Financial services | 2026 |
| Gershon Learning Limited | Administrative & support | 2014 |
| Gerwitt Ltd | Information & communication | 2026 |
| GET Duckd UK Ltd | Wholesale & retail | 2025 |
| GET Shielded Ltd | Information & communication | 2025 |
| GET the Room Limited | Wholesale & retail | 2023 |
| GET the Shot Limited | Information & communication | 2010 |
| GETFIT4LIFE Ltd | Health & social care | 2024 |
| Gevity Ltd | Wholesale & retail | 2025 |
| GG Digital Innovators Limited | Wholesale & retail | 2024 |
| GG-013-078 Limited | Real estate | 2021 |
| GG-180-662 Limited | Real estate | 2021 |
| GG-210-905 Limited | Real estate | 2024 |
| GG-257-997 Limited | Real estate | 2021 |
| GG-519-956 Limited | Real estate | 2021 |
| GG-621-266 Limited | Real estate | 2021 |
| GG-662-287 Limited | Real estate | 2021 |
| GG-680-637 Limited | Real estate | 2022 |
| GG-690-086 Limited | Real estate | 2021 |
| GG-768-038 Limited | Real estate | 2021 |
| GG-820-661 Limited | Real estate | 2021 |
| GG-877-602 Limited | Real estate | 2021 |
| GG-930-331 Limited | Real estate | 2021 |
| Gharkool Ltd | Real estate | 2019 |
| GHC (Bolton) Limited | Professional & scientific | 2019 |
| GHD Management Limited | Professional & scientific | 2023 |
| Ghost Group Media Ltd | Information & communication | 2025 |
| Ghostseed Ltd | Information & communication | 2026 |
| GHP Property Ltd | Real estate | 2024 |
| GHS Trading Ltd | Wholesale & retail | 2020 |
| GHZ Services Ltd. | Wholesale & retail | 2018 |
| Giant Property Group Ltd | Real estate | 2024 |
| Giant Property Services Ltd | Real estate | 2023 |
| Giantcampaign Ltd | Information & communication | 2023 |
| Gibbard Mechtech Ltd | Professional & scientific | 2022 |
| Gibbs Sports Coaching Ltd | Education | 2022 |
| Gibex One Limited | Administrative & support | 2022 |
| Gibex Topco Limited | Real estate | 2022 |
| Gibex Two Limited | Administrative & support | 2022 |
| Gibson & Mason Ltd | Wholesale & retail | 2025 |
| Gicbt Ltd | Health & social care | 2021 |
| Giddlare Properties Limited | Construction | 2024 |
| Gidney Building Services Ltd | Construction | 2021 |
| Gidney Contractors Ltd | Construction | 2023 |
| GIE Capital Ltd | Financial services | 2025 |
| Gift-Wrapped Rentals Ltd | Hospitality | 2022 |
| Giftflow Ltd | Wholesale & retail | 2026 |
| Gigglemug Ltd | Wholesale & retail | 2016 |
| Gigup Group Ltd | Information & communication | 2024 |
| Gihan Arnolda Racing Limited | Arts & recreation | 2026 |
| Gikke Transfer Limited | Financial services | 2023 |
| Gildea Property Ltd | Real estate | 2017 |
| Gill Neil Associates Ltd | Professional & scientific | 2025 |
| Gimme Gimme Ltd | Wholesale & retail | 2026 |
| Gims Resources Ltd | Real estate | 2023 |
| GIN and Olive Events and Catering Ltd | Hospitality | 2021 |
| Ging AI Ltd | Information & communication | 2025 |
| Ginger Living Ltd | Real estate | 2022 |
| Gingerbread House Holdings Ltd | Wholesale & retail | 2024 |
| Gingko Invest Ltd | Real estate | 2019 |
| Gingko V Ltd | Wholesale & retail | 2026 |
| Gino Towing Service Ltd | Wholesale & retail | 2025 |
| Gipping Valley Holdings Ltd | Financial services | 2021 |
| Giro Durham Limited | Extraterritorial | 2019 |
| Gitam Ltd | Financial services | 2025 |
| Gitzo Limited | Professional & scientific | 2009 |
| GK Prep Ltd | Transport & logistics | 2024 |
| GKA Global Ltd | Wholesale & retail | 2024 |
| GKB Pharma Ltd | Wholesale & retail | 2025 |
| Gkeducation Sports Academy C.I.C. | Education | 2019 |
| GKI Holdings Ltd | Professional & scientific | 2025 |
| GKW Anaesthetists Ltd | Health & social care | 2009 |
| GL Computer Solutions Limited | Information & communication | 2013 |
| GL Property (Suffolk) Ltd | Construction | 2019 |
| GL Richards Properties Ltd | Real estate | 2023 |
| Glades PAY Limited | Financial services | 2022 |
| Gladosa Ltd | Wholesale & retail | 2025 |
| Gladuos Ltd | Professional & scientific | 2022 |
| Glammed UP by ABI Ltd | Other services | 2022 |
| Glamorganics Ltd | Wholesale & retail | 2025 |
| Glamsphere Collective Ltd | Wholesale & retail | 2025 |
| Glass Extensions Ltd | Construction | 2025 |
| Glasstx Ltd | Professional & scientific | 2022 |
| GLB Creative Solutions Ltd | Information & communication | 2018 |
| Gleaming Aura Limited | Wholesale & retail | 2025 |
| Gleaming Horizons Ltd | Administrative & support | 2023 |