| Futuroot Limited | Information & communication | 2019 |
| Fuwin Tech Limited | Wholesale & retail | 2025 |
| Fuzion Designz Ltd | Extraterritorial | 2013 |
| FVF Exclusive Ltd | Construction | 2015 |
| G a Mallard Limited | Information & communication | 2006 |
| G Day & SON Limited | Construction | 2004 |
| G Drill Limited | Construction | 2018 |
| G Festivals Ltd | Administrative & support | 2023 |
| G Food Events Ltd | Hospitality | 2020 |
| G Lawok Ltd | Hospitality | 2023 |
| G Logicz Limited | Information & communication | 2021 |
| G M Express Limited | Hospitality | 2010 |
| G Properties (UK) Limited | Real estate | 2005 |
| G ROC Global Ltd | Wholesale & retail | 2021 |
| G S Marble Limited | Information & communication | 2006 |
| G SUB Limited | Hospitality | 2010 |
| G V F Construction Ltd | Construction | 2024 |
| G W C Management Consultancies Ltd | Professional & scientific | 2025 |
| G&B Interiors Ltd | Construction | 2024 |
| G&B United Ltd | Construction | 2018 |
| G&Cd Consulting Limited | Professional & scientific | 2023 |
| G&K Son's Ltd | Construction | 2025 |
| G&M Rochford Property LLP | | 2025 |
| G-Events Limited | Arts & recreation | 2012 |
| G4AWP Limited | Health & social care | 2019 |
| G8 Partners Group Limited | Real estate | 2016 |
| G8K Limited | Real estate | 2021 |
| GAA Group Holdings Ltd | Real estate | 2020 |
| Gabby Trans Ltd | Transport & logistics | 2016 |
| Gabi Contractors Ltd | Construction | 2016 |
| Gabriel Construction Management Ltd | Construction | 2026 |
| Gabriel DMD Limited | Construction | 2023 |
| Gabriel Retaial Limited | Wholesale & retail | 2025 |
| Gabyenergy Ltd | Manufacturing | 2021 |
| GAD Accessories Ltd | Wholesale & retail | 2022 |
| Gadanio Ltd | Wholesale & retail | 2018 |
| Gadebridge Service Centre Ltd | Wholesale & retail | 2016 |
| Gadgets Shop Limited | Wholesale & retail | 2018 |
| Gains Security Services Ltd | Administrative & support | 2021 |
| Gainsyfit Ltd | Arts & recreation | 2021 |
| Gajjjar Ltd | Construction | 2025 |
| GAL Properties Limited | Real estate | 2020 |
| Galaxy Properties International Limited | Real estate | 2018 |
| Gama Corporation Ltd | Hospitality | 2018 |
| Gamayun Theatre Company Ltd | Education | 2024 |
| Game Brain Ltd | Real estate | 2016 |
| Gamingtraditionz Ltd | Wholesale & retail | 2022 |
| Gamma Wave Technologies Ltd | Information & communication | 2019 |
| Gana Restaurant Wembley Ltd | Hospitality | 2023 |
| Ganapathycc Ltd | Wholesale & retail | 2012 |
| Ganesh Housing Ltd | Construction | 2022 |
| Ganga INV Ltd | Real estate | 2019 |
| Gangai Traders Limited | Wholesale & retail | 2021 |
| Gangotri Graphics Ltd | Manufacturing | 2020 |
| Gargalo Services Ltd | Wholesale & retail | 2021 |
| Garifuna Heritage UK C.I.C. | Education | 2024 |
| Garm Studios Ltd | Wholesale & retail | 2025 |
| Gartan Construction Limited | Construction | 2015 |
| Garudawis Limited | Health & social care | 2024 |
| GAS AID Plumbing & Heating Ltd | Construction | 2025 |
| GAS and Heating Home Services Ltd | Construction | 2019 |
| GAS FLO Ltd | Construction | 2019 |
| GAS Ignite Heating Ltd | Construction | 2020 |
| GAS Plumbing Services Ltd | Construction | 2019 |
| GAS Solutions Ltd | Other services | 2025 |
| Gasneeds UK Ltd | Manufacturing | 2025 |
| Gastric Cancer UK Limited | Health & social care | 2024 |
| Gate House Lettings Ltd | Real estate | 2018 |
| Gate Leaflet Distribution Ltd | Other services | 2014 |
| Gatefirm Limited | Real estate | 2016 |
| Gateway Care Group Ltd. | Health & social care | 2020 |
| Gateway Exports Ltd | Wholesale & retail | 2023 |
| Gateway Kids Care Ltd | Education | 2026 |
| Gathiyawad Ltd | Hospitality | 2025 |
| Gav's Kitchen Ltd | Hospitality | 2020 |
| Gavivarshan Ltd | Real estate | 2023 |
| Gazeta Romaneasca Limited | Wholesale & retail | 2013 |
| GB Chin WOO Athletic Association Ltd | Arts & recreation | 2026 |
| GB Nest Ltd | Information & communication | 2024 |
| GB Online Sales Ltd | Wholesale & retail | 2011 |
| Gbay Ltd | Other services | 2021 |
| Gbfix Ltd | Construction | 2023 |
| GBR Motors Ltd | Wholesale & retail | 2018 |
| Gbxi Limited | Financial services | 2013 |
| GC Couture Ltd | Manufacturing | 2025 |
| Gcet Limited | Real estate | 2012 |
| GCP (UK) Limited | Wholesale & retail | 2014 |
| Gdpros Ltd | Professional & scientific | 2024 |
| Gds.Travel Wholesaler Limited | Information & communication | 2015 |
| Geck Solutions UK Ltd | Manufacturing | 2024 |
| Geegeee Limited | Professional & scientific | 2023 |
| Gees Auto, Body & Mechanical Repairs Ltd | Wholesale & retail | 2010 |
| Geety Sultani Ltd | Arts & recreation | 2025 |
| Gefyra Ltd | Wholesale & retail | 2013 |
| Geld Capital Ltd | Administrative & support | 2018 |
| Gems Car Rental Ltd | Administrative & support | 2018 |
| Gems Drive Limited | Administrative & support | 2022 |
| Gems Transportation Ltd | Transport & logistics | 2020 |
| Gemtel Limited | Extraterritorial | 2006 |
| GEN 5 Investments Ltd | Real estate | 2024 |