| GCL Group (Kent) Limited | Tonbridge | 2011 |
| GCL Home Management Ltd | Cambridge | 2010 |
| GCL Voice and Data Limited | Wadhurst | 2010 |
| GCM Print & Packaging Service Limited | Nottingham | 1995 |
| Gcmm Ltd | Southend-On-Sea | 2014 |
| Gcmt Holding Ltd | Hastings | 2025 |
| GCN Management Limited | Coventry | 2021 |
| Gcpg Limited | Haslemere | 2013 |
| GCS Estate Management Limited | Camberley | 2015 |
| GCS Global Norway Limited | London | 2022 |
| GCS Products Solution Co., Ltd | Kenilworth | 2017 |
| GCS Recruitment Limited | London | 2009 |
| GCS Services Norway Ltd | London | 2021 |
| GCS Steels (Gosport) Limited | Aldershot | 2013 |
| Gcsi Ltd | Berkhamsted | 2025 |
| GCT Properties Ltd | Tamworth | 2014 |
| Gctl Technologies Limited | London | 2014 |
| Gczm Ltd | Southampton | 2024 |
| GD Gardens and Property Limited | Farnham | 2018 |
| GD Harries & Sons Limited | London | 2020 |
| GD Works Europe Ltd | High Wycombe | 2021 |
| GDA Creative Limited | Paddock Wood | 2021 |
| Gdba Community Care Services Limited | Reading | 1992 |
| GDF Developments Ltd | Ivybridge | 2009 |
| GDG Limited | Stockport | 2015 |
| GDH Materials Ltd | Enniskillen | 2022 |
| GDK (Contracts) Limited | Fareham | 2000 |
| GDK Limited | Fareham | 1998 |
| GDL Driving Ltd | Luton | 2019 |
| GDL Trading (UK) Ltd | Croydon | 2013 |
| GDL2020 Ltd | London | 2021 |
| Gdma Holdings Limited | Sheffield | 2010 |
| Gdma Limited | Sheffield | 2010 |
| Gdma Management Limited | Sheffield | 2010 |
| GDN Coaching Ltd | Huddersfield | 2023 |
| GDP Capital Real Estate Ltd | Belfast | 2013 |
| GDP China Business Services Corporation Ltd | Leeds | 2024 |
| GDP Investment Management Ltd | Coventry | 2014 |
| Gdpr Computer Services Ltd | Thetford | 2015 |
| Gdpr Helpline Limited | Shipley | 2020 |
| GDR Feed Storage UK Ltd | Bristol | 2018 |
| Gdre Investments Limited | Gravesend | 2017 |
| GDS Property Ltd | Lamberhurst | 2015 |
| GDS2 Limited | Banbridge | 2005 |
| GDT Building Solutions Ltd | Aylesbury | 2016 |
| GE CIF Property Nominee Company NO 1 Limited | Altrincham | 2010 |
| GE CIF Property Nominee Company NO 2 Limited | Altrincham | 2010 |
| GE Cornwall Property Ltd | Launceston | 2022 |
| GE Plumbing & Heating Ltd | Bolton | 2003 |
| GE Stevens Limited | Birchwood | 2007 |
| Gear UP TV Limited | London | 2015 |
| Gearace Limited | Bicester | 1998 |
| Geared UP Limited | Yeovil | 2010 |
| Gearoid Consulting Limited | London | 2012 |
| Gearpower Group Ltd | Bournemouth | 2016 |
| Gearspark Dynamics Ltd | Ipswich | 2025 |
| Gearup Recruitment Ltd | Ilford | 2024 |
| Gearup Talent Ltd | Derby | 2025 |
| Gearwell Machinery Co., Ltd. | Beckenham | 2014 |
| Geaves Limited | South Woodham Ferrers | 2022 |
| GEC Contracting Limited | Cookstown | 2006 |
| Gecko Decking Limited | Barnsley | 2014 |
| Gecko Homes Limited | Birmingham | 2016 |
| Gecko Property Development Limited | Birmingham | 2016 |
| Gecorp Solutions Ltd. | Uckfield | 2013 |
| Geddup Ltd | Manchester | 2025 |
| Gedeya International Limited | Beckenham | 2020 |
| Gedifan Limited | Beckenham | 2025 |
| Gediyat Twenty Sixth Property Limited | Harrogate | 1991 |
| Gedrick Machinery Co., Ltd | London | 2021 |
| GEE & SON (Denbigh) Limited | Bethesda | 1978 |
| GEE BEE Rentals Ltd | Kenilworth | 2011 |
| GEE DEE Plant Ltd | Middlesbrough | 2012 |
| Geecee (Market Rasen) Management Company Limited | Lincoln | 1992 |
| Geekamoak Publishing Ltd | Leeds | 2021 |
| Geeki Solutions Limited | Ipswich | 2014 |
| Geekvape Electronic Cigarettes (UK) Limited | Cambridge | 2017 |
| Geena Ltd | Bridgend | 2019 |
| Geest Shipping Limited | Fareham | 1932 |
| Geeta Gandhi Ltd | Welling | 2024 |
| Geeten Enterprise Co., Ltd | Beckenham | 2019 |
| Geffly (Italy) Electronics Co., Ltd. | Beckenham | 2020 |
| Gefu Trade Co., Limited | Beckenham | 2023 |
| Geili Group Ltd | Beckenham | 2015 |
| Geir Vevle Invest Limited | London | 2009 |
| Geir Wing Limited | London | 2025 |
| Geistreichfinanzfrei Ltd | Manchester | 2023 |
| GEK UK Sales Limited | Shropham | 1992 |
| Gelaes Management Ltd | Kenilworth | 2022 |
| Gelamack Innovations Technology Deutschland Limited | Cambridge | 2025 |
| Gelato Mondo Ltd | Bristol | 2013 |
| Gelert Associates Limited | Towcester | 2017 |
| Gelert IP Limited | Shirebrook | 2013 |
| Gelivable International (UK) Ltd | Kenilworth | 2011 |
| Gelland Investments Corporation Limited | Suffolk | 2002 |
| Gellaw 199 Limited | Nottingham | 2008 |
| Gelos Publications Limited | London | 2014 |
| Gelpop Ltd | London | 2018 |
| GEM (UK) Ltd | Leeds | 2011 |
| GEM Cooling Ltd | Sutton | 2022 |