| Grace Developments Dorset Ltd | Construction | 2018 |
| Grace James Recruitment Limited | Administrative & support | 2010 |
| Grace Medics Limited | Health & social care | 2024 |
| Grace Rose Legal Consultancy Ltd | Professional & scientific | 2026 |
| Graczyk Installations Ltd | Administrative & support | 2016 |
| Graduates Medical Company Ltd | Health & social care | 2015 |
| Graduhire Limited | Administrative & support | 2023 |
| Grafton Espace Ltd | Administrative & support | 2018 |
| Grafton Street Management Company (Altrincham) Limited | Real estate | 2016 |
| Graham Latham Limited | Professional & scientific | 2003 |
| Granada Holdings Ltd | Financial services | 2024 |
| Grand NON Stop Ltd | Wholesale & retail | 2023 |
| Grand Summit Estates Ltd | Real estate | 2025 |
| Grandi Mortgage Solutions Ltd | Financial services | 2023 |
| Grandier Court Management Company Limited | Households | 1990 |
| Grandma Lee's Sauces Ltd | Manufacturing | 2022 |
| Grange Wealth Ltd | Professional & scientific | 2018 |
| Granite Concepts Limited | Manufacturing | 2017 |
| Grants Online Ltd | Administrative & support | 2016 |
| Granville Works Management Company Limited | Households | 2025 |
| Grapes & Grinds Ltd | Hospitality | 2025 |
| Grapevine Management Limited | Health & social care | 2003 |
| Graphite Strategy Limited | Professional & scientific | 1991 |
| Graphite Strategy Ventures LLP | | 2020 |
| Grasp Accounting & Advisory Limited | Professional & scientific | 2025 |
| Graston Copse Holiday Park Limited | Hospitality | 1997 |
| Gratitude Global Limited | Professional & scientific | 2026 |
| Grav & SEV Limited | Construction | 2010 |
| Grave Revivals Ltd | Other services | 2025 |
| Gray Matter Video Limited | Information & communication | 2018 |
| Gray Mode Ltd | Wholesale & retail | 2025 |
| Gray Oak 1 Ltd | Construction | 2024 |
| Grayguze Consultancy Ltd | Professional & scientific | 2019 |
| Grayonblue Ltd. | Wholesale & retail | 2003 |
| Grayrose Investments Ltd | Real estate | 2018 |
| Grease Monkey Competitions Ltd | Arts & recreation | 2026 |
| Great Big Everything Ltd | Information & communication | 2018 |
| Great British Systems Ltd | Financial services | 2012 |
| Great Choice Flooring Ltd | Construction | 2018 |
| Great Escape Solent Boat Charter Limited | Transport & logistics | 2021 |
| Great Escapes Group Limited | Real estate | 2021 |
| Great Real Estate Ltd | Real estate | 2023 |
| Greecoo Ltd | Information & communication | 2024 |
| Green Architecture & Development Consultants Ltd | Professional & scientific | 2019 |
| Green Express Ltd | Wholesale & retail | 2022 |
| Green Hands Services Ltd | Professional & scientific | 2026 |
| Green Heat UK (Boiler) Ltd | Manufacturing | 2021 |
| Green Leaves 123 Consulting Limited | Information & communication | 2016 |
| Green Light 2016 Ltd | Transport & logistics | 2026 |
| Green Line Processing Ltd | Administrative & support | 2022 |
| Green Pasture Property Investments Limited | Real estate | 2025 |
| Green Pastures HR Consulting Limited | Administrative & support | 2023 |
| Green Planet Renewables Ltd | Construction | 2022 |
| Green Porter Ltd | Extraterritorial | 2023 |
| Green Power Electrical Ltd | Construction | 2025 |
| Green Ridge Knives Ltd | Wholesale & retail | 2024 |
| Green Seal 90 Ltd | Construction | 2022 |
| Green Space Property Management Limited | Real estate | 2024 |
| Green Tambourine Limited | Information & communication | 2012 |
| Green Tape Delivery Ltd | Professional & scientific | 2025 |
| Green Team Energy Limited | Construction | 2012 |
| Green Twilight Ltd | Information & communication | 2022 |
| Green World Energy Ltd | Professional & scientific | 2026 |
| Green Wren Holdings Ltd | Financial services | 2024 |
| Green-Side Turfcare Limited | Other services | 2010 |
| Greenbox Systems Limited | Information & communication | 2024 |
| Greendale Construction Limited | Construction | 1990 |
| Greendale Developments Limited | Construction | 2000 |
| Greendale Homes Limited | Construction | 1996 |
| Greeneryfx Ltd | Extraterritorial | 2018 |
| Greenfield Residents Association Limited | Households | 1983 |
| Greenfields Financial Management Limited | Financial services | 2001 |
| Greenflame Installations Ltd | Construction | 2008 |
| Greenhill & Rodwell Ltd | Wholesale & retail | 2025 |
| Greenhill Gardens Management Company Limited | Households | 2013 |
| Greenlight Marketplace Ltd | Wholesale & retail | 2019 |
| Greenlights Digital Limited | Information & communication | 2026 |
| Greenmarsa Limited | Real estate | 2019 |
| Greens Combustion Limited | Manufacturing | 2006 |
| Greensave Conservatories Limited | Wholesale & retail | 2026 |
| Greensave Windows & Doors Limited | Construction | 2026 |
| Greenside Rail Limited | Professional & scientific | 2018 |
| Greenslade Enterprises Ltd | Wholesale & retail | 2025 |
| Greenslade Pleasure Boats (Poole) Limited | Transport & logistics | 2011 |
| Greenstream Mobility Limited | Information & communication | 2025 |
| Greentech Advisory Ltd | Professional & scientific | 2025 |
| Greentree Consultants Ltd | Professional & scientific | 2008 |
| Greenwood Asset Management UK Ltd | Professional & scientific | 2026 |
| Gregair Limited | Professional & scientific | 2013 |
| Greggles Tech Limited | Information & communication | 2023 |
| Gregory Holdings Limited | Financial services | 2024 |
| Grennall (South) Ltd | Construction | 2023 |
| Greta Property Limited | Real estate | 2024 |
| Grey and Gold Properties Ltd | Real estate | 2019 |
| Greyharbor Capital Ltd | Wholesale & retail | 2025 |
| Greyline Global Ltd | Transport & logistics | 2025 |
| Greymarch Ltd | Information & communication | 2025 |
| Greys Estate Agents Limited | Real estate | 2008 |
| Greys Land and New Homes Ltd | Real estate | 2019 |
| Greyshift Limited | Wholesale & retail | 2023 |