| Glasgow Dog and Cat Home | Dunfermline | 1991 |
| Glasgow Estates Ltd | Manchester | 2016 |
| Glasgow Gordon Nominees Limited | Manchester | 2021 |
| Glasgow International College | Glasgow | 2006 |
| Glasgow Pawnbroking Limited | Glasgow | 2015 |
| Glasgow Premier Recovery Ltd | Glasgow | 2022 |
| Glasgow Steeplejack Company Limited | Glasgow | 2002 |
| Glasgow Wealth Management Limited | Glasgow | 2015 |
| Glasgow Whisky Distillers Limited | Glasgow | 2013 |
| Glasgow Whisky Distillery Limited | Glasgow | 2013 |
| Glaskin Mews Limited | London | 2013 |
| Glaslyn Investments Limited | Woking | 1997 |
| Glaslyn Trading Limited | Llandrindod Wells | 2014 |
| Glasmoke Crafts Factory Co., Ltd | Cambridge | 2014 |
| Glass and Framing Solutions Fabrications Limited | Hull | 2025 |
| Glass and Mirror Technology Limited | Wakefield | 2024 |
| Glass and Quartz Ltd | Welwyn | 2023 |
| Glass Avocado Consultancy Ltd | Sedgeford | 2018 |
| Glass Glover Group Limited | Chippenham | 1987 |
| Glass Glover Management Services Limited | Chippenham | 1963 |
| Glass Guard Limited | Thetford | 2000 |
| Glass Machine (Sun Tool) Limited | St. Neots | 1987 |
| Glass Medic Limited | Egham | 1988 |
| Glass Office Partition Ltd | Canvey Island | 2020 |
| Glass Plus Ltd | Bristol | 2021 |
| Glass Qualifications Authority Limited | Sheffield | 2011 |
| Glass Republic Limited | Derby | 2016 |
| Glass Studio Supplies Limited | Wickford | 2010 |
| Glass Supplies Limited | Dorset | 2001 |
| Glass's Fruit Markets Limited | Livingston | 1957 |
| Glassagg (UK) Limited | Carlisle | 2005 |
| Glassdoor Ltd | Harrogate | 2012 |
| Glasses Complete Limited | Worsley | 2006 |
| Glassflake Manufacturing Limited | Leeds | 2008 |
| Glassflake Technologies Limited | Leeds | 2008 |
| Glasshouse Records Limited | Newton Abbot | 2014 |
| Glassic Limited | London | 2025 |
| Glassman Europe Limited | Reading | 1989 |
| Glasson Group (Lancaster) Limited | Llansantffraid | 1996 |
| Glasspeak Services Ltd | London | 2025 |
| Glasstech Limited | Birmingham | 1987 |
| Glasswall Nominees Limited | London | 2021 |
| Glasswork Properties Ltd | London | 2019 |
| Glastec Limited | Blackpool | 1982 |
| Glastonbury Limited | Wells | 2014 |
| Glastonbury Spring Water Holdings Limited | Glastonbury | 2016 |
| Glastry Court Management Company Ltd | Belfast | 2005 |
| Glasvey Development Limited | Ballykelly | 1974 |
| Glatton Hall Estates Limited | Huntingdon | 2008 |
| Glavenhill Strategic Land (Number 3) Limited | Norwich | 2014 |
| Glavenhill Strategic Land (Number 4) Limited | Norwich | 2014 |
| Glavenhill Strategic Land (Number 5) Limited | Norwich | 2015 |
| Glavenhill Strategic Land (Number 6) Limited | Norwich | 2015 |
| Glavenhill Strategic Land (Number 7) Limited | Norwich | 2015 |
| Glaves Limited | Pudsey | 2025 |
| Glaw Ffres Ltd | Redditch | 2018 |
| Glaxosmithkline Limited | London | 2019 |
| Glazed Expressions Limited | Pulborough | 1983 |
| Glazegreat Limited | London | 1997 |
| Glazing Maintenance Limited | Huddersfield | 2022 |
| Glazing Vans Limited | Cardiff | 2008 |
| GLB Electrical Services Ltd | Gillingham | 2022 |
| GLC Enterprise (H.K) Company Limited | London | 2019 |
| GLC Marine Leisure International Ltd | Stratford-Upon-Avon | 2025 |
| Gleambeads Ltd | Milton Keynes | 2024 |
| Gleanty Ltd | London | 2018 |
| Glebe Close 23031972 Limited | Hemel Hempstead | 2013 |
| Glebe Gardens Allotment Association Limited | Derby | 2012 |
| Glebe Hill Management Ltd | Ballyclare | 2012 |
| Glebehill Limited | | 2002 |
| Gledhill Ltd | Verwood | 2011 |
| Gledhow 1953 Limited | Leeds | 2013 |
| Gledhow Park Avenue 1963 Limited | Leeds | 2014 |
| Gleeson Capital Solutions Limited | Sheffield | 2004 |
| Gleeson Classic Homes Limited | Sheffield | 1985 |
| Gleeson Homes Southern Limited | Sheffield | 1980 |
| Gleeson Housing Developments Limited | Sheffield | 1979 |
| Gleeson PFI Investments Limited | Sheffield | 2005 |
| Gleeson Properties (Kingley) Limited | Sheffield | 2004 |
| Gleeson Properties (Petersfield) Limited | Sheffield | 2004 |
| Gleeson Properties Limited | Sheffield | 1964 |
| Gleeson Services Limited | Sheffield | 1966 |
| Glemsford Silk Mills Limited | Suffolk | 1936 |
| Glen 1963 Limited | Ibstock | 2013 |
| Glen 1971 Limited | Darvel | 2013 |
| Glen Affric Brewery Ltd | Birkenhead | 2014 |
| Glen Batten Ltd | Castleford | 2023 |
| Glen Gate Management Company Limited | Bangor | 2008 |
| Glen Heat & Irrigation Limited | Spalding | 1998 |
| Glen IAN Manton Limited | Rettendon Common | 2023 |
| Glen Lovell Architecture Ltd | Bedford | 2025 |
| Glen Oak Grange Management Company Limited | Ballyclare | 2013 |
| Glen Park Management Company NO. 1 Limited | Bangor | 2002 |
| Glen Richard Churchill Ltd | Rotherham | 2024 |
| Glen Richard Collins Ltd | Rotherham | 2024 |
| Glen Rinnes Limited | Dundee | 1988 |
| Glen Road Management Company Limited | Bangor | 2005 |
| Glen Spencer Sutton Consultancy Ltd | London | 2024 |
| Glen Tromie Invest Limited | Cardiff | 2021 |
| Glen USK Business Club Limited | Bridgwater | 2014 |