| G.A.D Services Ltd | Water & waste | 2024 |
| G.B’S Catering Supplies Ltd | Wholesale & retail | 2025 |
| G.O. Drainage Services Limited | Administrative & support | 2009 |
| G.T.S Electricians Limited | Construction | 2014 |
| G24 Jokerbox Express Ltd | Transport & logistics | 2021 |
| G2G Properties Ltd | Real estate | 2020 |
| GA Global Axis Ltd | Administrative & support | 2018 |
| GA Health Ltd | Health & social care | 2022 |
| GA Transportation Ltd | Transport & logistics | 2017 |
| Gaad Limited | Construction | 2019 |
| Gabriel Work Ltd | Construction | 2026 |
| Gabryella Limited | Transport & logistics | 2012 |
| Gadget Bay Limited | Wholesale & retail | 2021 |
| Gadit Universe Ltd | Information & communication | 2021 |
| Gaga Haulage Ltd | Transport & logistics | 2011 |
| Gagalytics Limited | Professional & scientific | 2018 |
| Gageanu Transport Ltd | Transport & logistics | 2016 |
| Gaka Digital Limited | Professional & scientific | 2010 |
| Gala & Gala Ltd | Transport & logistics | 2026 |
| Galaxy Allied Ltd | Wholesale & retail | 2024 |
| Galeksi LLP | | 2022 |
| Galeksi Pointe Ltd | Real estate | 2022 |
| Galicki Trans Ltd | Transport & logistics | 2019 |
| Galleywood Equestrian Limited | Arts & recreation | 2011 |
| Gapie Ltd | Transport & logistics | 2025 |
| Gaplus Limited | Wholesale & retail | 2018 |
| Garif Properties Limited | Real estate | 2024 |
| Garner Healthcare Innovations Limited | Health & social care | 2024 |
| Garry Jones Estates Limited | Real estate | 2017 |
| Garton Caravan Park Ltd | Hospitality | 2023 |
| Gates of Praise International Christian Centre | Other services | 2001 |
| Gates Technical Services Limited | Other services | 2019 |
| Gateway Learning Community | Education | 2006 |
| GB AXE Construction Ltd | Construction | 2017 |
| Gbacd Group Ltd | Construction | 2024 |
| Gbemi Ltd | Wholesale & retail | 2021 |
| GBG Ventures Limited | Information & communication | 2019 |
| GBM Spectrum Ltd | Construction | 2025 |
| Gbmjlondon Ltd. | Health & social care | 2020 |
| GCA Property Holdings Ltd | Real estate | 2021 |
| GCS Properties Investment Limited | Real estate | 2024 |
| GED UK Construction Ltd | Construction | 2016 |
| Ged&V Construction Ltd | Construction | 2026 |
| Geeomotayo Company Limited | Transport & logistics | 2012 |
| Gelsim Trans Ltd | Construction | 2021 |
| Gemini 262 Ltd | Information & communication | 2026 |
| Gemini Key Ventures Ltd | Real estate | 2025 |
| General Build Ltd | Construction | 2023 |
| Generation JC Ltd | Health & social care | 2022 |
| Generik DB Limited | Real estate | 2020 |
| Genesis ETC Limited | Other services | 2005 |
| Genius Food Group Limited | Hospitality | 2018 |
| Gennix Asset Management Limited | Real estate | 2022 |
| Gentle Carecare Ltd | Other services | 2018 |
| Genzai Limited | Professional & scientific | 2018 |
| Geobase Developments Ltd | Construction | 2026 |
| Geofan Ltd | Wholesale & retail | 2026 |
| Geoffrey Smith Ltd | Administrative & support | 2016 |
| Geonsi Courier Services Ltd | Transport & logistics | 2024 |
| George L&P Ltd | Construction | 2019 |
| George Rose 91 Ltd | Transport & logistics | 2018 |
| Georgel Transport Limited | Transport & logistics | 2019 |
| Georgiaonani UK Limited | Health & social care | 2010 |
| Geotraco Consultancy Limited | Information & communication | 2017 |
| Geravison Ltd | Other services | 2025 |
| German Sliding Wardrobes Limited | Wholesale & retail | 2019 |
| Germund Healthcare Ltd | Health & social care | 2016 |
| Gesor Trans Ltd | Transport & logistics | 2016 |
| Gesto Marketing Ltd | Professional & scientific | 2026 |
| GET Loopli Limited | Information & communication | 2024 |
| Getting Granola Ltd | Wholesale & retail | 2021 |
| Getunlimited Ltd | Professional & scientific | 2022 |
| Getway Service Ltd | Education | 2020 |
| GF Collections Ltd | Transport & logistics | 2015 |
| Gfml Co Ltd | Professional & scientific | 2023 |
| GG Construct Ltd | Construction | 2023 |
| GGP82 Ltd | Construction | 2018 |
| Ghar SEY Ltd. | Hospitality | 2024 |
| Ghenii Limited | Construction | 2018 |
| Gheorghe Obada Ltd | Construction | 2019 |
| Gibbons Consulting Ltd | Professional & scientific | 2019 |
| Giemein Ltd | Health & social care | 2021 |
| Giesen Trading Limited | Wholesale & retail | 2017 |
| Giftype Tech Limited | Information & communication | 2019 |
| Gilmartin Solutions Limited | Information & communication | 2012 |
| Gims Care Solution Limited | Health & social care | 2016 |
| Ginarahman Limited | Hospitality | 2025 |
| Gindaira Ltd | Wholesale & retail | 2019 |
| Gio&Son Ltd | Administrative & support | 2025 |
| Giorgiana's Transport Ltd | Transport & logistics | 2021 |
| Gird Training Limited | Education | 2022 |
| Girl Haven Ltd | Other services | 2025 |
| Girling Property Development Limited | Construction | 2014 |
| Gisonex Limited | Information & communication | 2017 |
| Given-Wilson Institute(The) | Health & social care | 1912 |
| Giztee Property Limited | Real estate | 2025 |
| Gizzi Limited | Manufacturing | 2008 |
| Gj&Mc Estates Limited | Real estate | 2020 |
| Gjeta Transport Ltd | Transport & logistics | 2021 |
| GJG Trading Limited | Real estate | 2010 |