| Georgiou's Properties Unlimited | Real estate | 2008 |
| Georlan Properties Ltd | Construction | 2024 |
| Geotactics Consulting Limited | Professional & scientific | 2015 |
| Geoviv Ltd | Transport & logistics | 2019 |
| Gepo Services Ltd | Construction | 2024 |
| Geppetto Ltd | Construction | 2018 |
| GER Consultancy Limited | Administrative & support | 2015 |
| Gerard Todd Recruitment Limited | Administrative & support | 2010 |
| Gerb Decore Ltd | Construction | 2026 |
| Gerefa Limited | Real estate | 2017 |
| Gergana K Ltd | Wholesale & retail | 2024 |
| German Mobile Mechanic Ltd | Wholesale & retail | 2007 |
| German Motor Mechanics Ltd | Wholesale & retail | 2026 |
| Germana's Dream Team Ltd | Wholesale & retail | 2021 |
| GES Lifting Consultancy Limited | Professional & scientific | 2014 |
| Gess Fabrications Limited | Manufacturing | 2025 |
| GET Into Nature Ltd. | Education | 2017 |
| GET Mooving Limited | Transport & logistics | 2017 |
| GET the Print Limited | Arts & recreation | 2023 |
| Getelected Ltd | Professional & scientific | 2024 |
| Gethin Thomas Orthopaedics Limited | Health & social care | 2015 |
| Gethiring Limited | Administrative & support | 2021 |
| Getnow Capital Ltd | Real estate | 2025 |
| Gexers Limited | Wholesale & retail | 2024 |
| Gfax Risk Analytics Ltd | Information & communication | 2021 |
| GFL Construction Limited | Construction | 2014 |
| GFL Plant Limited | Administrative & support | 2013 |
| Gflex Consultancy Ltd | Professional & scientific | 2017 |
| GFX 360 Ltd | Construction | 2014 |
| GG Bien Limited | Information & communication | 2021 |
| GG Decorators Ltd | Construction | 2023 |
| GG Garden Services Ltd | Manufacturing | 2020 |
| GG Gardening and Landscaping Ltd | Administrative & support | 2023 |
| GG Housing Management Services Ltd | Households | 2020 |
| GG MED Limited | Health & social care | 2023 |
| GG-039-012 Limited | Real estate | 2022 |
| Gghn Properties Limited | Real estate | 2024 |
| GGP London Developments Ltd | Construction | 2024 |
| GGS House Investments Ltd | Real estate | 2017 |
| GH Investments (UK) Ltd | Financial services | 2014 |
| GHA Resolutions Ltd | Professional & scientific | 2017 |
| Ghalandar Consultants Ltd | Information & communication | 2026 |
| Ghale Immigration LAB Ltd | Professional & scientific | 2024 |
| Ghalia Medical Services Limited | Health & social care | 2025 |
| Ghanapathy Investments Limited | Transport & logistics | 2004 |
| Ghani Packages UK Ltd | Professional & scientific | 2024 |
| Ghanshyam Supermarket Ltd | Wholesale & retail | 2021 |
| Ghattaura Enterprises Limited | Health & social care | 2010 |
| Ghazniwal Ltd | Wholesale & retail | 2026 |
| Gheflo Ltd | Construction | 2026 |
| Ghelani Law Limited | Professional & scientific | 2023 |
| Ghelani Limited | Wholesale & retail | 2006 |
| Gheogips Limited | Construction | 2021 |
| Ghezel Medical Ltd | Financial services | 2019 |
| GHH Estate Limited | Real estate | 2016 |
| Ghirardi Stone Contractors UK Ltd | Construction | 2020 |
| GHK Realty Limited | Real estate | 2024 |
| GHL Trustee Limited | Financial services | 2025 |
| Ghld (2018) Limited | Professional & scientific | 2018 |
| Ghld Group Limited | Financial services | 2018 |
| Ghld Limited | Professional & scientific | 2014 |
| Ghoda Logistics Ltd | Wholesale & retail | 2024 |
| Ghoomo UK Limited | Administrative & support | 2021 |
| Ghory Group Ltd | Wholesale & retail | 2025 |
| Ghost Barbers Northwood Limited | Other services | 2026 |
| Ghost Photography Ltd | Professional & scientific | 2025 |
| GHP Group Services Limited | Professional & scientific | 2005 |
| GHP Registrars Limited | Other services | 2003 |
| Ghulam Rasool Engineering UK Ltd | Manufacturing | 2024 |
| GI DOC Ltd | Health & social care | 2024 |
| GI Heritage Holding Ltd | Wholesale & retail | 2023 |
| GI Heritage Ltd | Wholesale & retail | 2023 |
| GI Medic Ltd | Health & social care | 2019 |
| GI Outsourcing Ltd | Professional & scientific | 2020 |
| Gi-Ta Resourcing Limited | Extraterritorial | 2024 |
| Giant Steps Academy Ltd | Education | 2025 |
| Gibson Honey Lettings Limited | Real estate | 2010 |
| Giddings & SON Limited | Manufacturing | 2015 |
| Giddings Signs (Installations) Limited | Construction | 2020 |
| Giec Global Education and Migration PTY Ltd | Information & communication | 2025 |
| Gift a Meal CIC | Health & social care | 2024 |
| Gift Concept Ltd | Wholesale & retail | 2017 |
| Gift'Rs Limited | Administrative & support | 2024 |
| Giftbrit Ltd | Wholesale & retail | 2019 |
| GIG Holdings Limited | Financial services | 2026 |
| Giga Investments Ltd | Real estate | 2025 |
| Giggleverse Limited | Other services | 2023 |
| Giggly Minds Ltd | Education | 2024 |
| Gihon & Pearls Ltd | Real estate | 2023 |
| Gihon & Pearls Management Services Ltd | Real estate | 2025 |
| Gilai Property Limited | Real estate | 2017 |
| Gilani Family Holdings Limited | Financial services | 2024 |
| Gilbert Deya Ministries (GDM) UK Ltd | Other services | 2012 |
| Gilchrist Engineering Limited | Construction | 2025 |
| Gildacroft Holdings Limited | Professional & scientific | 2010 |
| Gildacroft Limited | Construction | 1978 |
| Giles Ripley Ltd | Administrative & support | 2019 |
| Gill Heathrow Properties Limited | Real estate | 2017 |
| Gillam Management Services Limited | Construction | 2013 |
| Gillani Properties Limited | Hospitality | 2023 |