| GS Hotels Limited | Hospitality | 2009 |
| GS Leisure and Recreation Limited | Financial services | 2016 |
| GS Mann Plumbing & Heating Limited | Construction | 1972 |
| GS Plastering and Lime Ltd | Construction | 2025 |
| GS Prop Co 1 Ltd | Real estate | 2025 |
| GS Prop Co 2 Ltd | Real estate | 2025 |
| GS Prop Co 3 Ltd | Real estate | 2025 |
| GS Prop Holdings Ltd | Real estate | 2025 |
| GSB Contracting Ltd | Construction | 2017 |
| GSP Builders Limited | Construction | 2007 |
| GSP Group Investments Ltd | Real estate | 2022 |
| GSS Media Ltd | Professional & scientific | 2017 |
| Gsvs (East Anglia) Limited | Professional & scientific | 2024 |
| GT Barbers Norwich Limited | Other services | 2022 |
| GT Construction and Developments Ltd | Construction | 2021 |
| GT Consulting Services Limited | Professional & scientific | 2021 |
| GT Resolve Ltd | Administrative & support | 2023 |
| GT1 Properties Ltd | Real estate | 2024 |
| GTAUTO8883 Ltd | Wholesale & retail | 2021 |
| GTC Land Holdings Ltd | Real estate | 2018 |
| GTJ Investment Company | Financial services | 2012 |
| Gtki Ltd | Manufacturing | 2015 |
| Guacos Catering Limited | Hospitality | 2024 |
| Guard Group Nationwide Limited | Administrative & support | 2013 |
| Guard Group Services Ltd | Administrative & support | 2010 |
| Guard Group UK Ltd | Administrative & support | 2010 |
| Guarda Ltd | Professional & scientific | 2016 |
| Guardian Fire Limited | Professional & scientific | 1989 |
| Guardian Screens Limited | Wholesale & retail | 2023 |
| Guardipark Ltd | Transport & logistics | 2025 |
| Guardium Technologies Ltd | Information & communication | 2026 |
| Gudnex Ltd | Manufacturing | 2022 |
| Guests@Home Ltd | Real estate | 2021 |
| Guild Health Group Ltd | Professional & scientific | 2006 |
| Guildhall School of Dancing Limited | Arts & recreation | 2009 |
| Guinness Sustainable Infrastructure Limited | Energy | 2015 |
| Guinness Sustainable Schools 2 Ltd | Energy | 2014 |
| Guinness Sustainable Schools Ltd | Energy | 2013 |
| Gulan 2011 Ltd | Wholesale & retail | 2024 |
| Gullfoss Property Ltd | Real estate | 2022 |
| Gulliver Limited | Energy | 2002 |
| GUN Hill Asset Management Limited | Real estate | 2014 |
| Gunby & Co Ltd | Professional & scientific | 2024 |
| Gunn Maintenance & Landscaping Ltd | Construction | 2025 |
| Gunns Court Management Limited | Real estate | 2014 |
| Gurney Court Limited | Households | 2007 |
| Gurney Road Properties Limited | Real estate | 1959 |
| Gutter Force Ltd | Administrative & support | 2012 |
| Gutter Free Limited | Administrative & support | 2014 |
| Guvna Ltd | Hospitality | 2019 |
| GUY Robertson Consulting Ltd | Professional & scientific | 2021 |
| Guyton Accounting Services Ltd | Professional & scientific | 2022 |
| Guze Transport Ltd | Transport & logistics | 2017 |
| GW Actuary Limited | Financial services | 2021 |
| GW Broadcast Sound Ltd | Information & communication | 2018 |
| GW Property Co Norfolk Ltd | Other services | 2025 |
| GWH Group Limited | Financial services | 2022 |
| GWH Prop 2 Ltd | Real estate | 2024 |
| GWH Prop 3 Ltd | Real estate | 2024 |
| GWH PROP1 Ltd | Real estate | 2024 |
| GWR Developments Ltd | Real estate | 2024 |
| Gxtuk Limited | Professional & scientific | 2024 |
| GY9 Ltd | Transport & logistics | 2022 |
| GYB Services Limited | Water & waste | 2003 |
| Gym Ginge Ltd | Wholesale & retail | 2026 |
| Gym Therapy Systems Limited | Arts & recreation | 2003 |
| GYMFIT4LESS Aylesbury Limited | Arts & recreation | 2016 |
| GYMFIT4LESS Ltd | Health & social care | 2014 |
| GYN Retail Limited | Administrative & support | 2025 |
| GYR Falcon Property Limited | Real estate | 2026 |
| Gyre & Gimble Academy Ltd | Manufacturing | 2022 |
| Gyre & Gimble Holdings Ltd | Financial services | 2022 |
| Gyre & Gimble Media Ltd | Professional & scientific | 2024 |
| Gytra Ltd | Transport & logistics | 2024 |
| H & a Entertainments Ltd | Arts & recreation | 2015 |
| H & a Maintenance Ltd | Construction | 2022 |
| H & a Pro-Serv Ltd | Professional & scientific | 2018 |
| H & C Developments Ltd | Real estate | 2024 |
| H & C Partners Ltd | Professional & scientific | 2025 |
| H & H (Build) Services Ltd | Construction | 2018 |
| H & H Catering (Essex) Limited | Hospitality | 2006 |
| H & H Inns Limited | Hospitality | 2026 |
| H & J Hart Limited | Real estate | 2017 |
| H & L Properties East Anglia Ltd | Real estate | 2024 |
| H & R Barringer Car Park Limited | Hospitality | 2021 |
| H & S BBQ Limited | Hospitality | 2019 |
| H & S Performance Limited | Wholesale & retail | 2009 |
| H Barkat Transports Limited | Wholesale & retail | 2019 |
| H Biro Ltd | Transport & logistics | 2026 |
| H C Norwich Ltd | Hospitality | 2015 |
| H Construction (Building & Project Management) Limited | Construction | 2015 |
| H Derma Beauti, Aesthetics & Hair Ltd | Other services | 2025 |
| H Grice Ltd | Manufacturing | 2025 |
| H J Lewis Limited | Health & social care | 2006 |
| H K Plumbing & Heating Services Limited | Construction | 2019 |
| H Tech Styling Ltd | Wholesale & retail | 2003 |
| H&H Property Investment Group Ltd | Real estate | 2023 |
| H&J Bodywork Ltd | Wholesale & retail | 2025 |
| H&J Fresh Food UK Ltd | Wholesale & retail | 2021 |
| H&L Turner Ltd | Wholesale & retail | 2016 |