| G H & Y Taylor Limited | Manufacturing | 2026 |
| G I Fabrication (Doncaster) Ltd | Construction | 2011 |
| G J FOX Electrical Ltd | Construction | 2017 |
| G J Smith Building Services Ltd | Construction | 2024 |
| G Jones Structural Engineering Ltd | Professional & scientific | 2018 |
| G L G Contracting Limited | Construction | 2015 |
| G L H Plumbing & Heating Limited | Manufacturing | 2016 |
| G M Security Networks Limited | Construction | 2021 |
| G M Walsh Plastering Ltd | Construction | 2019 |
| G M Welding Services Ltd | Construction | 2015 |
| G Murray Developments Limited | Construction | 2024 |
| G Robinson Rigging Services Limited | Information & communication | 2015 |
| G S Boat Controls Limited | Transport & logistics | 2014 |
| G Spence Ltd | Wholesale & retail | 2012 |
| G Stables Transportation Ltd | Transport & logistics | 2025 |
| G Stacey Joinery Limited | Construction | 2006 |
| G T Accounts Limited | Professional & scientific | 2006 |
| G T Services (Doncaster) Ltd | Water & waste | 2013 |
| G T Services (Tudworth) Ltd | Extraterritorial | 2024 |
| G W Autobodies Ltd | Wholesale & retail | 2021 |
| G Wadsworth TM Ltd | Other services | 2020 |
| G&Am Scaffolding LLP | | 2026 |
| G&B Services Ltd | Transport & logistics | 2024 |
| G&D Intertrade Ltd | Wholesale & retail | 2024 |
| G&D Moate Partnership LLP | | 2025 |
| G&E Painting Services Ltd | Construction | 2020 |
| G&G Plumber Limited | Construction | 2021 |
| G&Gdenman Ltd | Construction | 2021 |
| G&J Boutique Limited | Wholesale & retail | 2022 |
| G&M Car Sales Ltd | Wholesale & retail | 2022 |
| G&M Motor Service Ltd | Wholesale & retail | 2026 |
| G&O Quality Transport Limited | Transport & logistics | 2021 |
| G&P Property Solutions Limited | Real estate | 2023 |
| G-O Property Management (Yorkshire) Limited | Real estate | 2025 |
| G. Golland Limited | Agriculture & fishing | 1990 |
| G. L. Filtration Ltd | Manufacturing | 2004 |
| G. P. a. Architectural Services Ltd | Professional & scientific | 2019 |
| G.A.N Trans Ltd | Transport & logistics | 2014 |
| G.C. Parker Limited | Manufacturing | 2002 |
| G.Elliott Hydraulic and Mechanical Engineering Limited | Professional & scientific | 2012 |
| G.L H. Refurbishments Limited | Construction | 2024 |
| G.N.D Pound Plus Limited | Wholesale & retail | 2024 |
| G.P.Management Solutions Limited | Professional & scientific | 2022 |
| G.S. Transport (Yorkshire) Limited | Transport & logistics | 2015 |
| G.Tache Courier Ltd | Transport & logistics | 2024 |
| G10S Bars Ltd | Hospitality | 2026 |
| G18 Developments Limited | Real estate | 2022 |
| G2G Enterprises Limited | Wholesale & retail | 2013 |
| G2M Asset Management Limited | Financial services | 2022 |
| G2M Group LLP | | 2023 |
| G2M Holdings Limited | Professional & scientific | 2013 |
| G2M PRS Holdco Limited | Financial services | 2022 |
| G2M PRS Limited | Financial services | 2016 |
| G2M Retrofit Limited | Real estate | 2013 |
| G2M Unilets Limited | Real estate | 2001 |
| G5 Smart Moves Limited | Real estate | 2024 |
| G7 Film Productions Limited | Information & communication | 2017 |
| GA & LA Properties Ltd | Real estate | 2019 |
| GA Advisory UK Limited | Financial services | 2025 |
| GA Design + Construct Limited | Manufacturing | 2018 |
| GAB C Trans Ltd | Construction | 2018 |
| Gabbibada Ltd | Information & communication | 2024 |
| Gabriela Haulage Ltd | Transport & logistics | 2024 |
| Gabriele Loprevite Holding Company Limited | Financial services | 2026 |
| Gabrielle Estates Ltd | Real estate | 2024 |
| Gabs Healthcare Limited | Health & social care | 2023 |
| Gaby&Cristi Ltd | Transport & logistics | 2018 |
| Gadgetsville Ltd | Wholesale & retail | 2011 |
| Gaggi Properties Limited | Real estate | 2025 |
| GAH Autos Ltd | Wholesale & retail | 2024 |
| Gaidamac Transs Ltd | Transport & logistics | 2019 |
| Gailes Travel Limited | Administrative & support | 2004 |
| Gain IT ALL Limited | Information & communication | 2020 |
| Gainsborough Mini Market Limited | Wholesale & retail | 2025 |
| Gainsborough Riverside Gateway Limited | Construction | 2021 |
| Galaxy Tech Solutions Ltd | Information & communication | 2025 |
| Galaxy Tiles Limited | Construction | 2017 |
| Galea Transport Limited | Transport & logistics | 2024 |
| Gallery Club & Bar Ltd | Hospitality | 2019 |
| Gallions and Green Limited | Wholesale & retail | 2025 |
| Galloway Hughes Contractors Limited | Professional & scientific | 2025 |
| Gallucci Pizza Ltd | Hospitality | 2022 |
| Galrame Limited | Real estate | 1975 |
| Galt Consulting Limited | Professional & scientific | 2021 |
| Game Changed Network CIC | Arts & recreation | 2018 |
| Games for Events UK Limited | Arts & recreation | 2025 |
| Gamesuper Limited | Financial services | 1995 |
| Gaming Addictions Ltd. | Information & communication | 2025 |
| Gamper Limited | Administrative & support | 2008 |
| Gamrot Ltd | Transport & logistics | 2014 |
| Gang of Four Limited | Arts & recreation | 2010 |
| GAP Gardening Ltd | Real estate | 2023 |
| GAP Properties (Yorkshire) Limited | Real estate | 2009 |
| Gaqs Consulting Limited | Administrative & support | 2017 |
| GARAGE96 Ltd | Construction | 2026 |
| Garagepoint Ltd | Wholesale & retail | 2018 |
| Garbutt CMS Ltd | Professional & scientific | 2023 |
| Garden Factors Ltd | Wholesale & retail | 2018 |
| Garden Project Suppliers Ltd | Wholesale & retail | 2018 |
| Garden World Parkgate Limited | Wholesale & retail | 2024 |