| Galliford TRY Investments Limited | Professional & scientific | 2004 |
| Galliford TRY Limited | Construction | 1965 |
| Galliford TRY Plant Limited | Administrative & support | 2006 |
| Galliford TRY Properties Limited | Construction | 1899 |
| Galliford TRY Secretariat Services Limited | Professional & scientific | 2012 |
| Galliford TRY Services Limited | Construction | 1977 |
| Galthrees Limited | Other services | 2021 |
| Gamgam Limited | Education | 2025 |
| Gamtec International Limited | Manufacturing | 2005 |
| Ganesh Jewellers Limited | Wholesale & retail | 1997 |
| Ganesha Films Ltd | Information & communication | 2023 |
| Garamkhana Ltd | Hospitality | 2023 |
| Garbino Accounting Ltd | Professional & scientific | 2022 |
| Garcha Courier Services Ltd | Transport & logistics | 2026 |
| Garden Close 1 RTM Company Limited | Households | 2020 |
| Garden Close 1-6 RTM Company Limited | Households | 2022 |
| Garden Close 2 RTM Company Limited | Households | 2020 |
| Garden Close 3 RTM Company Limited | Households | 2020 |
| Garden Close 4 RTM Company Limited | Households | 2020 |
| Garden Close 5 RTM Company Limited | Households | 2020 |
| Garden Close 6 RTM Company Limited | Households | 2020 |
| Garden Court (Broxbourne) Limited | Professional & scientific | 1989 |
| Garden Glamping Ltd | Extraterritorial | 2019 |
| Gardens by Edward Ltd | Administrative & support | 2021 |
| Garg Estate PVT Ltd | Real estate | 2025 |
| Garratt Scaffolding Ltd | Construction | 2018 |
| Garrison Court Management (Hitchin) Limited | Households | 1987 |
| Garry Power Limited | Construction | 2009 |
| Garth Court RTM Company Limited | Households | 2006 |
| Gate Fixers United Kingdom Limited | Manufacturing | 2025 |
| Gaudi Construction Ltd | Construction | 2016 |
| Gauri and Dhanvi Real Assets Limited | Real estate | 2025 |
| Gauri Capital Limited | Financial services | 2024 |
| Gauri Films Ltd | Information & communication | 2024 |
| Gavbiz Ltd | Wholesale & retail | 2008 |
| Gavin Estates Ltd | Real estate | 2020 |
| GB Constructions (U.K) Ltd | Construction | 2015 |
| GB Roofing Contractors Ltd | Construction | 2017 |
| GB Specialist Traders Ltd | Wholesale & retail | 2023 |
| GB SRS Brundavan | Education | 2012 |
| GB Unik Interior Ltd | Construction | 2021 |
| GB Waste Rmoval Services Ltd | Other services | 2026 |
| Gb&Oka Logistics Ltd | Transport & logistics | 2023 |
| Gbdn Property Ltd | Real estate | 2025 |
| Gbdn Services Ltd | Wholesale & retail | 2024 |
| GBM Consultants Limited | Professional & scientific | 2019 |
| GBO Services Limited | Construction | 2026 |
| GBV JV Limited | Construction | 2013 |
| GC Hotels (Glasgow) Limited | Real estate | 2023 |
| GCH (Alan Morkill House) Limited | Health & social care | 2012 |
| GCH (Alder) Ltd | Health & social care | 2024 |
| GCH (AMY Woodgate) Limited | Health & social care | 2021 |
| GCH (Ascot) Limited | Health & social care | 2024 |
| GCH (Eldridge House) Ltd | Health & social care | 2008 |
| GCH (Eldridge) Holdings Ltd | Financial services | 2015 |
| GCH (Hertfordshire) Ltd | Health & social care | 2017 |
| GCH (Holdco) Limited | Professional & scientific | 2024 |
| GCH (Home Counties) Limited | Health & social care | 2019 |
| GCH (Lynwood Home Care) Ltd | Health & social care | 2025 |
| GCH (Midlands) Ltd | Health & social care | 2017 |
| GCH (Mill House) Ltd | Health & social care | 2024 |
| GCH (New Opco 2) Limited | Health & social care | 2024 |
| GCH (New Opco 3) Limited | Health & social care | 2024 |
| GCH (New Opco) Limited | Health & social care | 2024 |
| GCH (Newstead) Limited | Health & social care | 2004 |
| GCH (North London) Ltd | Health & social care | 2017 |
| GCH (South East) Limited | Financial services | 2022 |
| GCH (South) Ltd | Health & social care | 2017 |
| GCH (ST Davids) Ltd | Health & social care | 2023 |
| GCH (ST Katharine`S) Limited | Health & social care | 2009 |
| GCH (the Triangle) Ltd | Health & social care | 2024 |
| GCH (TM) Holdings Ltd | Financial services | 2024 |
| GCH (Vine Lodge) Limited | Health & social care | 2024 |
| GCH (Willesden Court) Ltd | Health & social care | 2025 |
| GCH New OP Holdings Limited | Financial services | 2024 |
| GCH Operations Holdings Ltd | Financial services | 2017 |
| GCH Slough Hotels Ltd | Financial services | 2025 |
| GCS Properties Limited | Real estate | 2012 |
| GE Gamma Ltd | Information & communication | 2017 |
| Gead Elite Facades Ltd | Construction | 2025 |
| Geekhubmedia Ltd | Wholesale & retail | 2022 |
| Geetanjali Service Ltd | Health & social care | 2022 |
| Gela’S Ltd | Transport & logistics | 2024 |
| Geltex Limited | Real estate | 2003 |
| Gelu BLS Limited | Construction | 2019 |
| Geminga Properties Limited | Households | 2024 |
| Gemini Parking Solutions London Ltd | Other services | 2012 |
| Gemlook Property Solutions Limited | Construction | 2019 |
| GEN Electrical Management Ltd | Construction | 2020 |
| Generation Football Media Limited | Information & communication | 2025 |
| Genesys Holdings Group Ltd | Information & communication | 2021 |
| Geniesign Ltd | Wholesale & retail | 2024 |
| Genius Digital Labs Limited | Information & communication | 2023 |
| Geniuslane Limited | Education | 2022 |
| Gentle Elegance (GE) Limited | Real estate | 2023 |
| GEO. Adams & Sons (Farms) Limited | Extraterritorial | 1981 |
| GEO. Adams & Sons Limited | Extraterritorial | 1961 |
| Geoinnovations Ltd | Manufacturing | 2013 |
| Georgia Stamp Ltd | Information & communication | 2022 |
| Geralds Court Residents Association Limited | Real estate | 1986 |