| Gecko Security Systems Limited | Administrative & support | 2024 |
| Geest Line Limited | Transport & logistics | 1997 |
| Geest Shipping Limited | Extraterritorial | 1932 |
| GEM Accountancy & Training Ltd | Professional & scientific | 2024 |
| GEM Autos Ltd | Transport & logistics | 2009 |
| GEM Hose Creative Production Ltd | Other services | 2018 |
| GEM Projects 1 Ltd | Health & social care | 2025 |
| Gemba Property Development Ltd | Real estate | 2025 |
| General Services and Supplies Ltd | Other services | 2019 |
| Genin Group Ltd | Construction | 2020 |
| GEO Heating Ltd | Construction | 2011 |
| Geo-Environmental Matters Ltd | Professional & scientific | 2015 |
| Geoprof Limited | Construction | 2025 |
| George Kattenhorn Road Surfacing Limited | Construction | 2015 |
| Georgia Ashleigh Limited | Other services | 2022 |
| German Shepherd Rescue South Limited | Professional & scientific | 2009 |
| Gerrards Cross Specsavers Hearcare Limited | Wholesale & retail | 2025 |
| Gerrards Cross Specsavers Limited | Wholesale & retail | 2018 |
| Gerrity Allen Associates Limited | Administrative & support | 2014 |
| Geruda Limited | Wholesale & retail | 2013 |
| GET Everyone Moving Limited | Information & communication | 2026 |
| GET Watersports Ltd | Wholesale & retail | 2023 |
| Getyourgoodstuff Ltd | Wholesale & retail | 2023 |
| GF Innovation Solutions Limited | Professional & scientific | 2023 |
| GFC Athlete Ltd | Administrative & support | 2025 |
| GG-336-678 Limited | Real estate | 2023 |
| GH Shakespeare Ltd | Real estate | 2022 |
| GH the Avenue Limited | Real estate | 2022 |
| GH the IVY Limited | Real estate | 2022 |
| GH Tourtle Services Limited | Professional & scientific | 2017 |
| GHG Motorwork Ltd | Professional & scientific | 2026 |
| GHO Capital III Nominee (UK) Ltd. | Financial services | 2021 |
| GHO Capital IV Aggregator GP Ltd. | Financial services | 2024 |
| GHO Capital IV Nominee (UK) Ltd. | Financial services | 2023 |
| GHO Capital Vanquish Nominee (UK) Ltd. | Financial services | 2022 |
| GHO Capital Virtue Nominee (UK) Limited | Financial services | 2021 |
| Ghost Stream Resolutions Ltd | Professional & scientific | 2025 |
| GHR Bespoke Ltd | Construction | 2025 |
| Ghyll Property Limited | Real estate | 2026 |
| Gibbons & Winzar Developments Ltd | Construction | 2021 |
| Gibbs Building Solutions Ltd | Construction | 2023 |
| Gigaphantom Ltd | Information & communication | 2025 |
| Gigi Catering Events Limited | Hospitality | 2026 |
| Gigi Takeaway & Delivery Ltd | Hospitality | 2026 |
| Gihon Investments Ltd | Financial services | 2022 |
| Giland Limited | Professional & scientific | 2004 |
| Gilbert Machining and Fabrication Ltd | Manufacturing | 2025 |
| Gill Johnston Marketing Limited | Professional & scientific | 2014 |
| Gillbanks Ltd | Arts & recreation | 2025 |
| Gillingham Specsavers Limited | Wholesale & retail | 2005 |
| Gillingham Visionplus Limited | Wholesale & retail | 2005 |
| Gilmour Capital Limited | Financial services | 2025 |
| Gilmour Strategic Holdings Limited | Financial services | 2025 |
| Girlington Specsavers Limited | Wholesale & retail | 2000 |
| GJK Water Management Ltd | Professional & scientific | 2025 |
| GK Property & Lettings Ltd | Real estate | 2019 |
| GKL Solutions Ltd | Professional & scientific | 2008 |
| GL Lease Holdings Ltd | Other services | 2025 |
| GL Properties Southern Limited | Real estate | 2025 |
| Glam and Grace Limited | Wholesale & retail | 2019 |
| Glasgow Domiciliary Specsavers Limited | Wholesale & retail | 2015 |
| Glasgow Forge Specsavers Limited | Wholesale & retail | 2003 |
| Glasgow Forge Visionplus Limited | Wholesale & retail | 2003 |
| Glasgow Specsavers Hearcare Limited | Wholesale & retail | 2003 |
| Glasgow Specsavers Limited | Wholesale & retail | 1989 |
| Glasgow Visionplus Limited | Wholesale & retail | 1999 |
| Glazebuild Limited | Construction | 2019 |
| Glen Eyre Close Freehold Limited | Households | 2022 |
| Glenrei Hart Ltd | Health & social care | 2018 |
| Glenrothes Specsavers Limited | Wholesale & retail | 1995 |
| Glenrothes Visionplus Limited | Wholesale & retail | 2003 |
| Glikky Ltd | Information & communication | 2018 |
| Global Business Culture Ltd | Information & communication | 2015 |
| Global Equipment Management Limited | Information & communication | 2021 |
| Global Fire Studios Ltd | Information & communication | 2021 |
| Global Gene Corp Limited | Professional & scientific | 2015 |
| Global Marine Associates Limited | Wholesale & retail | 2008 |
| Global Risk Consultants Limited | Professional & scientific | 1993 |
| Global Web Innovation Ltd | Wholesale & retail | 2021 |
| Globalcast Media Limited | Information & communication | 2009 |
| Globe Consulting Ltd | Information & communication | 2025 |
| Globe ENG Ltd | Professional & scientific | 2026 |
| Gloo! Technical Solutions Limited | Information & communication | 2016 |
| Glorious Solutions Ltd | Manufacturing | 2026 |
| Gloss Haven Limited | Wholesale & retail | 2026 |
| Glossop Specsavers Limited | Wholesale & retail | 2016 |
| Gloucester Domi Audiology Specsavers Limited | Wholesale & retail | 2023 |
| Gloucester Specsavers Hearcare Limited | Wholesale & retail | 2005 |
| Gloucester Specsavers Limited | Wholesale & retail | 1985 |
| Gloucestershire Newmedica Limited | Health & social care | 2017 |
| Glow Together Inclusive Aerial Arts CIC | Arts & recreation | 2026 |
| Glowmedical Ltd | Other services | 2024 |
| GLP 2 Holdco Limited | Real estate | 2025 |
| GLP 2 Propco 2 Limited | Real estate | 2025 |
| GLP 2 Propco Limited | Real estate | 2025 |
| GLS Project Services Ltd | Information & communication | 2005 |
| Glycogen Limited | Wholesale & retail | 2019 |
| Glyn Evans Ltd | Health & social care | 2023 |
| GM Construction South Limited | Construction | 2012 |
| GM2 Limited | Financial services | 2002 |