| Greenmain Limited | | 1972 |
| Greenmeadow Properites Ltd | Real estate | 2024 |
| Greenphire Limited | Information & communication | 2010 |
| Greenpier Holdings Ltd | Real estate | 2023 |
| Greenrocket Ltd. | Manufacturing | 1999 |
| Greenroot Consultants Limited | Professional & scientific | 2025 |
| Greens Garden Maintenance and General Build Ltd | Administrative & support | 2025 |
| Greens Horticulture Ltd | Wholesale & retail | 2008 |
| Greenshank Environmental Limited | Construction | 2022 |
| Greenshoots Private Limited | Professional & scientific | 2015 |
| Greenside Events Ltd | Arts & recreation | 2024 |
| Greenslade & Co Building Ltd | Construction | 2024 |
| Greenslades Barber Co Ltd | Other services | 2012 |
| Greensmart Limited | Administrative & support | 2008 |
| Greenstaff Medical Limited | Administrative & support | 2003 |
| Greensurv Ltd | Extraterritorial | 2024 |
| Greentech Heating & Plumbing Limited | Construction | 2012 |
| Greentrace Architect Ltd | Professional & scientific | 2019 |
| Greenvale Drive Management Limited | Real estate | 2018 |
| Greenwave Garden Design Limited | Professional & scientific | 2018 |
| Greenwave Landscaping Limited | Administrative & support | 2018 |
| Greenwaves Electrical Ltd | Construction | 2024 |
| Greenway Court Management Limited | Real estate | 1987 |
| Greenway House(Bristol) Limited | Households | 1966 |
| Greenway Managed Services Limited | Administrative & support | 2018 |
| Greenway Psychotherapy Ltd | Health & social care | 2025 |
| Greenway Services Group Limited Limited | Financial services | 2026 |
| Greenways Construction (Avon) and Agricultural Ltd | Construction | 1978 |
| Greenways Live-In Care Ltd | Health & social care | 2023 |
| Greenways Plant Hire Limited | Administrative & support | 2010 |
| Greenweb Digital Ltd. | Information & communication | 2015 |
| Greenwhich UK Investment Limited | Real estate | 2025 |
| Greenwing Gardens & Exterior Care Ltd | Administrative & support | 2025 |
| Greenwood Collection Ltd | Wholesale & retail | 2026 |
| Greenwood Construction Limited | Construction | 2012 |
| Greenwood Construction South West Limited | Construction | 2023 |
| Greenwood Development Services Limited | Construction | 2016 |
| Greenwood Glazing (SW) Limited | Construction | 2006 |
| Greenwood Property Holdings Ltd | Real estate | 2018 |
| Greenwood Wilding Ltd | Transport & logistics | 2026 |
| Greenwood's Carpentry & Kitchens Ltd | Manufacturing | 2025 |
| Greenworld Catering Ltd | Hospitality | 2025 |
| Greg and Family Ltd | Hospitality | 2026 |
| Greg Swist Ltd | Transport & logistics | 2013 |
| Greg Williams Plumbing & Heating Limited | Construction | 2020 |
| Gregg Latchams WRH Executor & Trustee Company | Extraterritorial | 1992 |
| Gregory Distribution (Contracts) Limited | Professional & scientific | 1995 |
| Gregory Distribution (Holdings) Limited | Professional & scientific | 2009 |
| Gregory Distribution (Transport) Limited | Transport & logistics | 2010 |
| Gregory Distribution Limited | Transport & logistics | 1977 |
| Gregory Distribution Property Ltd. | Real estate | 2022 |
| Gregory Distribution Trading Ltd. | Financial services | 2022 |
| Gregory Property Estates Ltd | Financial services | 2024 |
| Gregory Trading Holdings Limited | Financial services | 2023 |
| Gregory Travel Ltd | Administrative & support | 2024 |
| Gregory Warehouse Holdings Limited | Financial services | 2023 |
| Gregorys Estate Agent Limited | Real estate | 2014 |
| Grenadier Corporate Limited | Manufacturing | 2000 |
| Grenfell James Limited | Professional & scientific | 1986 |
| Grenthor Ltd | Wholesale & retail | 2025 |
| Gresham Club Limited | Other services | 2019 |
| Greshamquant Research UK Ltd. | Information & communication | 2026 |
| Gressland Court RTM Company Limited | Households | 2023 |
| Gretton Solar Farm Limited | Energy | 2013 |
| Greville Smyth Apartments Management Company Limited | Households | 2023 |
| Grey Crane Limited | Professional & scientific | 2021 |
| Grey Horizon Tech Ltd | Information & communication | 2025 |
| Grey Luck Limited | Real estate | 2022 |
| Grey MAN Engineering Limited | Manufacturing | 2016 |
| Grey MAN Holdings Limited | Financial services | 2026 |
| Grey MAN Investments Limited | Real estate | 2022 |
| Grey MAN Mechanical Limited | Manufacturing | 2021 |
| Grey MAN Technical Limited | Manufacturing | 2021 |
| Grey White Blue Limited | Information & communication | 2013 |
| Grey-Harris & Co Ltd | Wholesale & retail | 2019 |
| Greybull Performance Ltd | Wholesale & retail | 2024 |
| Greycell Technical Ltd | Professional & scientific | 2025 |
| Greyfield Consultancy Services Limited | Information & communication | 2008 |
| Greyhound Graphics Limited | Manufacturing | 1993 |
| Greymatters Engineering Ltd | Extraterritorial | 2020 |
| Greymatters Technologies Ltd | Professional & scientific | 1995 |
| Greys Acquisitions Limited | Manufacturing | 2007 |
| Greystoke Local's Limited | Wholesale & retail | 2023 |
| Greystones Construction SW Ltd | Construction | 2021 |
| Greystones Furnished Lettings Ltd | Real estate | 2024 |
| Greystones Holdings SW Ltd | Financial services | 2026 |
| Greytone Coffee Ltd | Manufacturing | 2022 |
| Greytree Property Ltd | Construction | 2017 |
| Greyz Consulting Ltd | Other services | 2023 |
| GRG Automotive Ltd | Wholesale & retail | 2023 |
| GRG Holdings Ltd | Real estate | 2016 |
| GRG Technical Consulting Limited | Professional & scientific | 2024 |
| Grickstone Farm Limited | Agriculture & fishing | 2013 |
| Gridline Glazing Ltd | Construction | 2025 |
| Gridsmart Systems Ltd | Information & communication | 2023 |
| Gridwise Ltd | Professional & scientific | 2023 |
| Griffen Property Maintenance and Management Services Ltd | Households | 2023 |
| Griffin Architectural Technology Solutions Ltd | Professional & scientific | 2025 |
| Griffin Crest Ltd | Construction | 2025 |
| Griffin Financial Consultants Limited | Financial services | 2010 |