| GAG411 Limited | Haverhill | 2016 |
| Gagamel Ltd | Halifax | 2024 |
| Gagatoo Limited | London | 2009 |
| Gage Properties (City Road) Limited | London | 2006 |
| Gaia Balance Training Limited | Stafford | 2021 |
| Gaia Baltica Ltd. | Haverfordwest | 2024 |
| Gaia Eco-Resilience Limited | Rugeley | 2025 |
| Gaia Independence Limited | Ashford | 2018 |
| Gaia Organics Limited | Kent | 1978 |
| Gaia Spa Developments Limited | Truro | 2012 |
| Gaia Spa Limited | Truro | 2012 |
| Gaia's General Ltd | London | 2025 |
| Gail Jennifer Allen Limited | London | 2025 |
| Gaimin.Io Limited | Manchester | 2018 |
| Gain Margin Co., Ltd | London | 2024 |
| Gainford Group Limited | Chester Le Street | 2018 |
| Gaingap Property Management Limited | Rochester | 1987 |
| Gainother Limited | Corsham | 1986 |
| Gainsborough Engineering Ltd | Hereford | 2024 |
| Gainsborough Estate Agents - Drury Group Limited | Sudbury | 2022 |
| Gainsborough Regeneration Limited | Norwich | 2008 |
| Gainspace Solutions Ltd | Sheffield | 2013 |
| Gainvest Ltd | Bishop Auckland | 2020 |
| Gaistwood Limited | East Grinstead | 2011 |
| Gait Subsidiary Ltd | Wolverhampton | 2025 |
| Gaite Wire Mesh Co., Ltd | Beckenham | 2020 |
| Gakana Forex Private Limited | London | 2016 |
| Gakm Limited | Brindle | 2018 |
| Gako Ltd | Birmingham | 2016 |
| Gala 1960 Limited | Galashiels | 2013 |
| Gala Fireworks Ltd | Digby | 2016 |
| Gala Yachting Ltd | Bromley | 2026 |
| Galaby Construction Ltd | Maidenhead | 2024 |
| Galactic Tide Ltd | Birmingham | 2022 |
| Galahad Ltd | Rochester | 2025 |
| Galant Consulting Ltd | London | 2025 |
| Galanthus Holdings Limited | Carlisle | 2022 |
| Galapagos Adventure Tours Limited | Kent | 2004 |
| Galato Investment Limited | Buxton | 2025 |
| Galaxy Beauty and Aesthetics Ltd | London | 2023 |
| Galaxy Chemical Limited | Beckenham | 2024 |
| Galaxy Executive Limited | Cambridge | 2014 |
| Galaxy Express Limited | Harrogate | 2026 |
| Galaxy Extras Limited | Dorchester | 2016 |
| Galaxy International Trading Co., Ltd | Cambridge | 2022 |
| Galaxy Metals Co., Ltd | Gillingham | 2013 |
| Galaxy Properties Ltd | Crawley | 2013 |
| Galaxy Publications Limited | Witham | 1966 |
| Galaxypeak Capital Partners Ltd | Manchester | 2025 |
| Galaxypeak Global Capital Ltd | Manchester | 2025 |
| Galaxyquest Global Capital Ltd | Manchester | 2025 |
| Galbraith Consulting Ltd | Glasgow | 2024 |
| Gale Crescent, (Ambleside) Management Company Limited | Ambleside | 1991 |
| Gale Developments Limited | Bury | 2021 |
| Galebreaker Agri Ltd | Ledbury | 2021 |
| Galecroft Properties Limited | Bury | 2021 |
| Galen Healthcare Limited | Loughborough | 1996 |
| Galen Rhodes Ltd | Loughborough | 1992 |
| Galene Marine Ltd | London | 2024 |
| Galeo Consulting Group Ltd | Birmingham | 2024 |
| Galileo Brick Limited | Park Cheadle | 2002 |
| Galip Grillen Limited | London | 2020 |
| Galita Ltd | London | 2018 |
| Galivs Ltd | Dover | 2019 |
| Gallagher Construction Limited | Saffron Walden | 1991 |
| Gallagher Horner Hair Design Ltd | Glasgow | 2014 |
| Gallagher Motor Company Limited | Liverpool | 2016 |
| Gallagher Plumbing & Heating Ltd | Glasgow | 2022 |
| Gallagher Russell Communications Limited | Perranporth | 2003 |
| Gallaghers International Removals & Storage Ltd | Strabane | 2012 |
| Gallan Park Cannock Management Company Limited | Swindon | 2010 |
| Gallant Energy (UK) Ltd | Cleckheaton | 2012 |
| Galleon Glass Limited | St. Ives | 2014 |
| Galleri Bjelland Limited | London | 2025 |
| Gallery Bathrooms Limited | Stockton Heath | 2008 |
| Gallery Cinemas Limited | Brentford | 1987 |
| Gallery Direct 2013 Limited | Sittingbourne | 2012 |
| Gallery Direct Holdings Limited | Sittingbourne | 2006 |
| Gallery Glass Auto Ltd | Oldham | 2025 |
| Gallery Maintenance London Ltd | Maidstone | 2020 |
| Gallery Pangolin Limited | Minchinhampton | 2001 |
| Gallery Products Engineering Limited | Dorking | 1999 |
| Gallery Studios Limited | Bradford | 1987 |
| Gallery Twenty Two Limited | Bristol | 2016 |
| Galleymore Ltd | Edgware | 2011 |
| Galleywood Business Services Limited | Chelmsford | 2021 |
| Galliard Residential Limited | Loughton | 2020 |
| Galliford Homes Holdings Limited | York | 1993 |
| Galliford Homes Limited | York | 1963 |
| Gallis Pole Limited | Bristol | 2010 |
| GALLIUM7 Trading Limited | Blackheath, London | 2019 |
| Gallivare Stad Limited | London | 2022 |
| Gallonmore Limited | London | 1978 |
| Gallow Hill Vineyard Limited | King'S Lynn | 2022 |
| Galloway Aerial Surveys Limited | Castle Douglas | 2013 |
| Galloway Cheddar Cheese Company Limited | Stranraer | 1989 |
| Galloway Seafoods Limited | Edinburgh | 2014 |
| Galloway Whitfield (Life & Pensions) Limited | Chorley | 1985 |
| Galls Electrical Ltd | Bristol | 2025 |
| Gallshore Limited | London | 2012 |