| GT FAN Cleaning Limited | Construction | 2025 |
| GT Motors R Ltd | Wholesale & retail | 2023 |
| GT Plastering & Build Ltd | Construction | 2022 |
| GT Precision Engineering Ltd | Manufacturing | 2017 |
| GT Private Limited | Transport & logistics | 2026 |
| GT Service Providers Ltd | Transport & logistics | 2019 |
| GT Services Leicester Ltd | Construction | 2021 |
| GT3 Performance Limited | Professional & scientific | 2016 |
| GTA European Ltd | Transport & logistics | 2026 |
| GTA Transport Limited | Transport & logistics | 1989 |
| GTB Collective Ltd | Other services | 2018 |
| GTB Construction Ltd | Construction | 2022 |
| GTB Engineering Ltd | Manufacturing | 2021 |
| GTD (GC) Limited | Professional & scientific | 2018 |
| GTE Electrical Services Ltd | Construction | 2009 |
| Gtec Windows Limited | Construction | 2017 |
| GTL Marketing Ltd | Wholesale & retail | 2025 |
| GTN Partnership Consultancy Limited | Professional & scientific | 2026 |
| GTP Nominees Limited | Extraterritorial | 2023 |
| GTR Recruitment Ltd | Administrative & support | 2024 |
| GTR Training Services Ltd | Administrative & support | 2019 |
| GTR Transport Ltd | Transport & logistics | 2026 |
| GTS Security Services Ltd | Administrative & support | 2020 |
| GTV Building and Management Ltd | Construction | 2023 |
| GTZ Holdings Ltd | Financial services | 2020 |
| GTZ Logistics Ltd | Transport & logistics | 2020 |
| Guardian Protection Services Limited | Administrative & support | 2009 |
| Guardian Software Ltd | Information & communication | 2023 |
| Guardian Surveillance Limited | Other services | 2018 |
| Guardwolf K9 Limited | Administrative & support | 2025 |
| Gubi Limited | Information & communication | 2013 |
| Guest Enterprises Ltd | Construction | 2026 |
| Guest Ready State Ltd | Real estate | 2026 |
| Gugu's Services Limited | Health & social care | 2024 |
| Guidance Automation Limited | Manufacturing | 2014 |
| Guidance Automation Solutions Ltd | Manufacturing | 2024 |
| Guidance Marine Ltd | Manufacturing | 2004 |
| Guidance Navigation Holdings Limited | Manufacturing | 2011 |
| Guide Health Care Recruitment Ltd | Health & social care | 2020 |
| Guidemap UK Ltd | Wholesale & retail | 2018 |
| Guild Building Services Ltd | Construction | 2022 |
| Guild Rooms Limited | Other services | 2022 |
| Guildea Welding Engineering Supplies Limited | Wholesale & retail | 2013 |
| Guildford Radiators Limited | Professional & scientific | 1986 |
| Guilford Court RTM Company Limited | Households | 2019 |
| Guilin FEN Fang Ltd | Hospitality | 2024 |
| Guillotine HC Ltd | Wholesale & retail | 2025 |
| Gujarat Foodies Ltd | Wholesale & retail | 2025 |
| Gukguk Ltd | Real estate | 2026 |
| Guks Logistics Limited | Construction | 2018 |
| GUL & Xavi Tech Ltd | Information & communication | 2024 |
| GUL Ahmad Healthcare Ltd | Health & social care | 2022 |
| Gulab Properties Limited | Real estate | 2002 |
| Gulapphool Ltd | Hospitality | 2019 |
| Gulf Falcon Ltd | Construction | 2022 |
| Gulf Hand Car Wash Ltd | Administrative & support | 2024 |
| Gulfan Ltd | Real estate | 2021 |
| Gullu Investments Limited | Real estate | 2017 |
| Gully Medicals Ltd | Health & social care | 2025 |
| Gulmo Limited | Wholesale & retail | 2018 |
| Gulzaar Logistics Ltd | Transport & logistics | 2025 |
| Gunnar Tech Ltd | Information & communication | 2024 |
| Gunthorpe Enterprises Limited | Households | 2024 |
| Gurbinder Group Ltd | Health & social care | 2026 |
| Gurdip Builder Ltd | Construction | 2025 |
| Gurj Dhami Ltd | Real estate | 2024 |
| Gurkha Curry @ TWA Limited | Hospitality | 2021 |
| Gurkha Embassy Ltd | Hospitality | 2018 |
| Gurkha Junction (Spondon) Limited | Hospitality | 2020 |
| Gurkhali Kitchen Limited | Hospitality | 2025 |
| Gurkhali OX Limited | Hospitality | 2026 |
| Gurkhas Cleaning Services Limited | Administrative & support | 2014 |
| Gurkripa Consultancy Ltd | Professional & scientific | 2026 |
| Gurnand Motors Ltd | Wholesale & retail | 2026 |
| Gurpal Singh 1992 Limited | Health & social care | 2017 |
| Guru Design and Build Ltd | Construction | 2025 |
| Guru Enterprise Limited | Wholesale & retail | 2023 |
| Guru Financial Services Ltd | Financial services | 2018 |
| Guru Games Limited | Information & communication | 2026 |
| Guru Grounding Ltd | Wholesale & retail | 2025 |
| Guru Kirpa Garments Ltd | Manufacturing | 2020 |
| Guru Nanak Sweet Centre Ltd | Wholesale & retail | 2015 |
| Guru Nanakdev Limited | Transport & logistics | 2025 |
| GURU258 Ltd | Administrative & support | 2018 |
| Guston Services Ltd | Wholesale & retail | 2019 |
| Gusworks Ltd | Information & communication | 2023 |
| Gutglow. Ltd | Hospitality | 2026 |
| GV Autos Ltd | Wholesale & retail | 2024 |
| GV Real Estate Ltd | Real estate | 2023 |
| GVC Property (UK) Ltd | Administrative & support | 2011 |
| GVK Consulting Ltd | Professional & scientific | 2016 |
| GVK Handlooms and Electronics Limited | Wholesale & retail | 2025 |
| GVN Cabs Ltd | Transport & logistics | 2020 |
| GW Tsls Ltd | Hospitality | 2024 |
| GWC Property Holdings Limited | Financial services | 2025 |
| GWC Residential Limited | Real estate | 2025 |
| Gwendolen Construction Ltd | Construction | 2019 |
| Gwendolen Convenience Store Ltd | Wholesale & retail | 2020 |
| Gwendolen Knitting Co Limited | Real estate | 1986 |
| Gwfn Limited | Professional & scientific | 2016 |