| GS Estates Limited | Real estate | 2017 |
| GS Investment Holdings Limited | Real estate | 2024 |
| GS1 Support Services Ltd | Administrative & support | 2018 |
| Gsbn Business Solutions Limited | Real estate | 2015 |
| GSC Consults Ltd | Wholesale & retail | 2023 |
| GSD Recruitment Services Limited | Construction | 2011 |
| Gsdev Group Ltd | Real estate | 2021 |
| Gsdev Limited | Information & communication | 2019 |
| Gseries Limited | Wholesale & retail | 2025 |
| GSG LDN Ltd | Administrative & support | 2018 |
| Gsgr Logistics Limited | Transport & logistics | 2023 |
| GSI Construction Ltd | Construction | 2021 |
| GSK Bodyworks Accident Repair Limited | Wholesale & retail | 2014 |
| Gskr Groups Ltd | Professional & scientific | 2025 |
| GSN Construct Ltd | Construction | 2018 |
| GSN Group Ltd | Wholesale & retail | 2024 |
| GSN Investments Limited | Real estate | 2017 |
| Gsrd Construction Limited | Construction | 2023 |
| Gssconnect Ltd | Construction | 2022 |
| GST Recruitment Ltd | Transport & logistics | 2022 |
| GT Tyres Luton Limited | Wholesale & retail | 2025 |
| GT5 Hire Ltd | Administrative & support | 2025 |
| GTA LUX Ltd | Manufacturing | 2020 |
| GTA Motorz Ltd | Wholesale & retail | 2024 |
| Gtac Ltd | Wholesale & retail | 2025 |
| Gtalian Ltd | Hospitality | 2025 |
| Gtcd Limited | Professional & scientific | 2023 |
| GTI Services Ltd | Manufacturing | 2023 |
| GTL Trans Ltd | Transport & logistics | 2015 |
| Gtrafix Ltd | Information & communication | 2012 |
| Guarantee Car Limited | Wholesale & retail | 2025 |
| Guarantor Solutions Limited | Real estate | 2018 |
| Guardcore Security Ltd | Administrative & support | 2026 |
| Guardian Letting Services Limited | Real estate | 1996 |
| Guban Tilers Ltd | Construction | 2019 |
| Gucci Tallava Ltd | Hospitality | 2015 |
| GUD Auto Services Ltd | Wholesale & retail | 2021 |
| Gufmaq Limited | Real estate | 2024 |
| Guidant Global UK Limited | Administrative & support | 1993 |
| Guidant Global-Europe Ltd | Administrative & support | 2010 |
| GUIDE92 Education Centre Limited | Education | 2016 |
| GUIDE92 Holdings Limited | Real estate | 2023 |
| Guiding Angels Social Care CIC | Health & social care | 2026 |
| Guildford Halls Ltd | Real estate | 2019 |
| Gujranwala & Co Ltd | Transport & logistics | 2018 |
| GUL Carpet & Flooring Ltd | Construction | 2024 |
| GUL Motors Limited | Wholesale & retail | 2025 |
| Gulab Diamonds Limited | Wholesale & retail | 2015 |
| Gulf Inspection Limited | Professional & scientific | 2024 |
| Gulu Traders Limited | Transport & logistics | 2023 |
| Gunduz Transport Services Ltd | Transport & logistics | 2021 |
| Gunn Construction Ltd | Construction | 2017 |
| Gunn Family Holdings Ltd | Real estate | 2017 |
| Gunn Family Partnership LLP | | 2017 |
| Gunner Corporation Limited | Arts & recreation | 2025 |
| Gunsev Ltd | Hospitality | 2020 |
| Guntaj Enterprises Limited | Transport & logistics | 2025 |
| GUO YU Ltd | Hospitality | 2019 |
| Gurjaap Logistics Ltd | Transport & logistics | 2026 |
| Gurnani Group UK Ltd | Wholesale & retail | 2025 |
| Gurnoor's Construction Limited | Construction | 2018 |
| Gursifat Services Limited | Transport & logistics | 2022 |
| Gustul Romanesc Luton Ltd | Wholesale & retail | 2025 |
| Guvnor Global Services Limited | Professional & scientific | 2015 |
| Guywholoveshiscameras Ltd | Wholesale & retail | 2026 |
| Guza Services Ltd | Real estate | 2025 |
| Guzmits Ltd | Construction | 2025 |
| GVS DEV Ltd | Construction | 2021 |
| GVS Education UK Limited | Professional & scientific | 2025 |
| GW Mini Market Limited | Wholesale & retail | 2026 |
| GYE Nyame Entertainment UK Limited | Health & social care | 2013 |
| Gym 1 Fitness Ltd | Arts & recreation | 2022 |
| Gym One Wellness Ltd | Arts & recreation | 2024 |
| Gym Owner Network Ltd | Professional & scientific | 2023 |
| GYP Academy Ltd | Financial services | 2025 |
| Gyula Fruit and VEG Limited | Wholesale & retail | 2022 |
| H & M Rental Properties Ltd | Real estate | 2021 |
| H & R Costa Limited | Administrative & support | 2011 |
| H a Registrations Ltd | Wholesale & retail | 2025 |
| H and R Collections Ltd | Wholesale & retail | 2025 |
| H Automotive Solutions Ltd | Wholesale & retail | 2019 |
| H D D (UK) Ltd | Construction | 2014 |
| H D D Pipelines Limited | Construction | 2016 |
| H Equals W Limited | Wholesale & retail | 2026 |
| H Fusion Ltd | Information & communication | 2019 |
| H I Wholesale and Supply Limited | Wholesale & retail | 2025 |
| H Ishtiaq Corp Ltd | Manufacturing | 2022 |
| H Khan Medical Ltd | Other services | 2019 |
| H N I Logistics Limited | Transport & logistics | 2013 |
| H Pattni Consultant Ltd | Professional & scientific | 2015 |
| H R Estates Specialist Ltd | Real estate | 2025 |
| H&A Marketplace Ltd | Wholesale & retail | 2023 |
| H&B Drylining Ltd | Construction | 2017 |
| H&B Health Limited | Health & social care | 2021 |
| H&H Consultant Services Ltd | Administrative & support | 2018 |
| H&H Mobilephone Parts Ltd | Wholesale & retail | 2025 |
| H&H Property PVT Ltd | Real estate | 2022 |
| H&J Labour Supplier Limited | Administrative & support | 2018 |
| H&K Engineering Services Ltd | Professional & scientific | 2024 |
| H&N Investment Group Ltd | Construction | 2022 |