| G&B Sport Limited | Other services | 2023 |
| G&P Installations Ltd | Construction | 2022 |
| G&P Maintenance and Removals Limited | Construction | 2025 |
| G-Tex Holdings Limited | Financial services | 2019 |
| G-Tex Stainless Limited | Manufacturing | 2009 |
| G. Whitehouse Autos Limited | Wholesale & retail | 1978 |
| G.Hadley & Sons(Sheet Metal)Limited | Manufacturing | 1971 |
| G.L.M. Finance Limited | Financial services | 2003 |
| G.S.Phillips Plumbing and Heating Ltd | Construction | 2019 |
| G2 Contractors & Groundworks Limited | Construction | 2007 |
| G2 Demolition Ltd | Construction | 2016 |
| G2 Developments Alscotte Ltd | Construction | 2021 |
| G2 Holdings and Investments Ltd | Financial services | 2019 |
| Gabriellas Beauty Ltd | Wholesale & retail | 2019 |
| Gadds Utilities Limited | Construction | 2022 |
| Gadgets & Vape House Ltd | Wholesale & retail | 2017 |
| Gainzzz Limited | Wholesale & retail | 2023 |
| Gala 2 Transport Ltd | Wholesale & retail | 2025 |
| Galescugroup Ltd | Construction | 2026 |
| Gallop Holdings Limited | Real estate | 2021 |
| Gamble Holdings and Investments Ltd | Financial services | 2025 |
| Game & Tech Exchange Ltd | Wholesale & retail | 2025 |
| Garden of Innovation Holding Limited | Financial services | 2020 |
| Gardening & Home Services Limited | Administrative & support | 2005 |
| Gary Lane Limited | Construction | 2004 |
| Gary Richard Homes Limited | Health & social care | 1971 |
| Gatenby Properties Ltd | Real estate | 2019 |
| Gatewyn Consultants Limited | Professional & scientific | 2026 |
| Gatge Global Innovation Limited | Health & social care | 2006 |
| Gauge Film Ltd | Professional & scientific | 2018 |
| Gava Properties Ltd | Real estate | 2020 |
| GB Filters Limited | Manufacturing | 2018 |
| GB Money Transfer & Mobiles Ltd | Wholesale & retail | 2023 |
| GB Swan Ltd | Other services | 2023 |
| GB4 Mechanical Ltd | Energy | 2024 |
| GC Homes & Property Development 1 Ltd | Construction | 2025 |
| GC Oriental Limited | Hospitality | 2021 |
| GC Roofing Contractors 1 Ltd | Construction | 2022 |
| GCV Trans Ltd | Transport & logistics | 2025 |
| GDH Design Engineering Group Limited | Professional & scientific | 2023 |
| Gedrad Service Ltd | Wholesale & retail | 2021 |
| Gehpa Ltd | Manufacturing | 2023 |
| Geltco Ltd | Wholesale & retail | 2025 |
| GEM Home Services Ltd | Real estate | 2022 |
| Gemini Bathrooms and Designs Ltd | Construction | 2025 |
| Gemini Marketing Services Ltd | Professional & scientific | 2026 |
| Gemrich Limited | Professional & scientific | 2002 |
| GEN 2 Carbon Limited | Manufacturing | 2004 |
| General United Food Guinee Ltd | Wholesale & retail | 2016 |
| Generational Ventures Holdings and Investments Ltd | Financial services | 2024 |
| Generational Ventures Limited | Real estate | 2022 |
| Generic Punching Systems Limited | Manufacturing | 2002 |
| Gennoe Projects Ltd | Professional & scientific | 2012 |
| Genuinevanparts Ltd | Wholesale & retail | 2024 |
| Geobeth Financial Services Ltd | Financial services | 2022 |
| George & Helen's Fish Bar Limited | Hospitality | 2010 |
| Getsircles Ltd | Professional & scientific | 2013 |
| GFD Service Ltd | Administrative & support | 2018 |
| Ghag Locums Ltd | Health & social care | 2010 |
| Ghana Black Star Supermarket Ltd | Wholesale & retail | 2024 |
| Ghousia Enterprise Limited | Professional & scientific | 2016 |
| Gifmart Afro & Local Groceries Ltd | Wholesale & retail | 2026 |
| Gifted Care & Support Ltd | Health & social care | 2022 |
| Giftry Ltd | Wholesale & retail | 2025 |
| Gifts N Party Limited | Wholesale & retail | 2021 |
| Gigi Motors Limited | Wholesale & retail | 2024 |
| Gill Courier Service U.K. Ltd | Transport & logistics | 2025 |
| Gillar & Gillar Limited | Financial services | 2022 |
| Gillar Property Group Ltd | Real estate | 2025 |
| Ginger Management Ltd | Real estate | 2025 |
| Girlings Limited | Professional & scientific | 2008 |
| Give Thankh's Ltd | Wholesale & retail | 2019 |
| Givebio Ltd | Information & communication | 2017 |
| GJW Holdings & Investments Limited | Financial services | 2021 |
| GK Retail Ltd | Wholesale & retail | 2020 |
| GKH Retail Ltd | Wholesale & retail | 2022 |
| Gladiator Consultancy Limited | Other services | 2025 |
| Gladrags Online Ltd | Wholesale & retail | 2020 |
| Glass and Glazing Consultancy Ltd | Professional & scientific | 2016 |
| Glass Factory Software Limited | Information & communication | 2021 |
| Glasscoat International Holdings Limited | Financial services | 2024 |
| Glasscoat International Limited | Manufacturing | 2005 |
| Glasscoat Technology Limited | Wholesale & retail | 2005 |
| GLO Tanning Studios Ltd | Other services | 2023 |
| Global Fasteners Limited | Wholesale & retail | 2004 |
| Global Harvest Church (Birmingham) | Other services | 2024 |
| Global Lubricants Limited | Manufacturing | 1997 |
| Global Rapid Sourcing Limited | Wholesale & retail | 2013 |
| Global Services Limited | Transport & logistics | 2025 |
| Global World Midlands Ltd | Wholesale & retail | 2026 |
| Globalcee UK Limited | Wholesale & retail | 2025 |
| Globulfin Ltd | Financial services | 2025 |
| Globulgar Ltd | Construction | 2016 |
| Glona Corporation Ltd | Wholesale & retail | 2024 |
| Glossify Car Care Limited | Administrative & support | 2026 |
| Gloverfail Ltd | Wholesale & retail | 2019 |
| Glow Pro Medical and Filler Wholesale Ltd | Wholesale & retail | 2025 |
| Glowscript Aesthetics Ltd | Health & social care | 2025 |
| Glozy.Com Ltd | Wholesale & retail | 2025 |
| Glushee Formulations Ltd | Manufacturing | 2025 |