| GSF Contractors Limited | Construction | 2022 |
| GSF Invesments Limited | Real estate | 2024 |
| GSG Developments Ltd | Construction | 2023 |
| GSG Trading UK Limited | Construction | 2021 |
| Gshw (Cheltenham Road) Limited | Construction | 2025 |
| Gshw Limited | Financial services | 2018 |
| Gshwi Limited | Real estate | 2018 |
| Gshwm Limited | Real estate | 2024 |
| Gsip Ltd | Real estate | 2025 |
| GSK (Birmingham) Limited | Health & social care | 2009 |
| GSK Holdings Ltd | Transport & logistics | 2025 |
| GSK Interiors Ltd | Construction | 2025 |
| GSK Recovery Ltd | Transport & logistics | 2024 |
| GSL Trading Services Ltd. | Water & waste | 2016 |
| GSM Accountants Ltd | Professional & scientific | 2023 |
| GSM Autos Limited | Wholesale & retail | 2025 |
| GSM Developers Ltd | Real estate | 2024 |
| GSM Food and Wine Ltd | Wholesale & retail | 2021 |
| GSM Global Trade Ltd | Wholesale & retail | 2026 |
| GSM Mobile Limited | Wholesale & retail | 2018 |
| GSM Prototypes Ltd | Construction | 2014 |
| GSM Ventures Limited | Real estate | 2023 |
| GSM Wholesale Ltd | Wholesale & retail | 2026 |
| GSM. Traders Limited | Wholesale & retail | 2014 |
| Gsmedicare Ltd. | Health & social care | 2014 |
| Gsmnet Ltd | Wholesale & retail | 2013 |
| Gsoperatives Limited | Wholesale & retail | 2022 |
| GSP Developments Limited | Construction | 2022 |
| GSR Accountancy Ltd | Professional & scientific | 2023 |
| GSR Control Solutions Ltd | Information & communication | 2015 |
| GSS Casting Ltd | Manufacturing | 2020 |
| GSS Groundworks Limited | Construction | 2023 |
| GSS Leisure Limited | Arts & recreation | 2016 |
| GSS Sandhu Transport Ltd | Transport & logistics | 2026 |
| GST Properties Ltd | Real estate | 2026 |
| Gstfixzie Ltd | Construction | 2023 |
| Gstoican Ltd | Wholesale & retail | 2025 |
| Gswift Haulage Limited | Transport & logistics | 2025 |
| GT Auto Mechanics Ltd | Wholesale & retail | 2026 |
| GT Capital Investments Limited | Real estate | 2023 |
| GT Car Milennium Limited | Wholesale & retail | 2019 |
| GT Design and Build Limited | Professional & scientific | 2021 |
| GT Engine Services Ltd | Transport & logistics | 2025 |
| GT Independent Consulting Ltd | Professional & scientific | 2024 |
| GT Medical Services Ltd | Manufacturing | 2025 |
| GT Physio Services Ltd | Health & social care | 2025 |
| GT Practitioners Ltd | Health & social care | 2026 |
| GTA Auto Limited | Wholesale & retail | 2025 |
| GTD Tiling Ltd | Construction | 2013 |
| Gtech Software Development and Consultancy Ltd | Information & communication | 2021 |
| Gtek (Holdings) Limited | Financial services | 2002 |
| Gtek Contracts Limited | Construction | 2016 |
| Gtes Holdings Limited | Transport & logistics | 2020 |
| Gtexpress Ltd | Transport & logistics | 2026 |
| GTI Automotive Ltd | Wholesale & retail | 2023 |
| GTK in Limited | Professional & scientific | 2007 |
| GTM Trade Limited | Wholesale & retail | 2025 |
| Gtmc Germany Limited | Administrative & support | 2017 |
| Gtoofast Ltd | Wholesale & retail | 2020 |
| GTR Europe Ltd | Wholesale & retail | 2017 |
| GTRAINING01 Ltd | Education | 2025 |
| GTS Engineering Solutions Innovations Ltd | Administrative & support | 2018 |
| GTS Traders Ltd | Wholesale & retail | 2026 |
| Gtsc (Birmingham) Ltd | Administrative & support | 2015 |
| Gtsp Consultancy Ltd | Professional & scientific | 2025 |
| GTT German Textile Technologies Limited | Administrative & support | 2009 |
| GTZ Limited | Wholesale & retail | 2018 |
| Guak Ltd | Hospitality | 2019 |
| Guandu Ltd | Transport & logistics | 2022 |
| Guangxin Limited | Hospitality | 2021 |
| Guanjie Technology (UK) Ltd | Wholesale & retail | 2015 |
| Guard Eco Services UK Ltd | Administrative & support | 2019 |
| Guard Elite Ltd | Administrative & support | 2024 |
| Guard Group Nationwide (Holdings) Limited | Real estate | 2013 |
| Guard Industrie (UK) Ltd | Wholesale & retail | 2015 |
| Guard-Lite Limited | Construction | 2006 |
| GUARD4SECURITY Ltd | Financial services | 2016 |
| Guarded Fists Ltd | Wholesale & retail | 2021 |
| Guardeira Ltd | Administrative & support | 2025 |
| Guardex Alarms Ltd | Construction | 2025 |
| Guardeye Group Ltd | Administrative & support | 2025 |
| Guardfit Autoparts Ltd | Wholesale & retail | 2026 |
| Guardian Angels Supported Accommodation Ltd | Hospitality | 2026 |
| Guardian Assetts Limited | Real estate | 2025 |
| Guardian Force Security Ltd | Financial services | 2025 |
| Guardian Glazing Films Ltd. | Construction | 1998 |
| Guardian Grove Children's Services Ltd | Health & social care | 2025 |
| Guardian Homes (Residential) Ltd | Health & social care | 2020 |
| Guardian Housing Limited | Hospitality | 2015 |
| Guardian Housing Solutions Limited | Real estate | 2026 |
| Guardian Laboratories (Midlands) Limited | Professional & scientific | 1996 |
| Guardian Occasions Catering Services Ltd | Hospitality | 2023 |
| Guardian of the Poor Limited | Public administration | 2025 |
| Guardian Properties Ltd | Real estate | 2020 |
| Guardian Properties Services Ltd | Real estate | 2016 |
| Guardian Property Investment Ltd | Real estate | 2008 |
| Guardian RTM Company Limited | Households | 2025 |
| Guardian Shield Security Ltd | Administrative & support | 2023 |
| Guardient Ltd | Wholesale & retail | 2025 |
| Guarding Hands Ltd | Health & social care | 2025 |