| Grendon PH Ltd | Milton Keynes | 2021 |
| Grendonia Consultancy Limited | Northampton | 2010 |
| Grenney Limited | London | 2019 |
| Grenoside Group Limited | Cardiff | 2026 |
| Grensvilla Building Co. Limited | Northampton | 1959 |
| Grenvale Limited | London | 2026 |
| Grenville Bidco Limited | Bideford | 2016 |
| Grenville Midco 1 Limited | Bideford | 2016 |
| Grenville Midco 2 Limited | Bideford | 2016 |
| Grenville Topco Limited | Bideford | 2016 |
| Grenvine Limited | Kent | 1990 |
| Gresham House Strategic Limited | London | 2021 |
| Gresham International Ltd | London | 2023 |
| Gresham International Shareholding Ltd | London | 2023 |
| Gresham Leasing March (3) Limited | London | 1987 |
| Gresham Nominee 1 Limited | | 2001 |
| Gresham Nominee 2 Limited | | 2001 |
| Gresham Resources Limited | Bath | 2021 |
| Gresham Tech Limited | London | 1981 |
| Gresham Telecomputing Limited | London | 1987 |
| Gresland & Co Limited | Stafford | 2020 |
| Grestone Developments Limited | Elsworth | 1937 |
| Gretna House Investment Company Limited | Dumfriesshire | 1991 |
| Gretna Museum and Tourist Services Limited | Gretna | 2003 |
| Greville House Consultants Limited | Warwick | 2017 |
| Greville Ltd | London | 2019 |
| Greville Trustees Limited | South Croydon | 1987 |
| Grewal Lettings Ltd | Nottingham | 2016 |
| Grey & Co Holdings Limited | Wembley | 2023 |
| Grey Circles Limited | Newton Abbot | 2016 |
| Grey Distribution and Training Ltd | Swansea | 2016 |
| Grey Dog Limited | Flint | 2013 |
| Grey Enterprizes Limited | Swansea | 2012 |
| Grey FOX Gifts Ltd | Ashbourne | 2024 |
| Grey Goose Limited | Loughborough | 2013 |
| Grey High Ltd | Guildford | 2020 |
| Grey Norway Limited | London | 2019 |
| Grey OWL Holdings Limited | Radlett | 2018 |
| Grey Sky Ltd | North Finchley | 2010 |
| Grey Wolf Sales Ltd | London | 2023 |
| Greybarn Properties Limited | London | 2003 |
| Greycat Solutions Invest Limited | London | 2016 |
| Greyfalcon (BE) Limited | Southsea | 2013 |
| Greyfort Investments Limited | Droitwich Spa | 2016 |
| Greyfriars Debt Recovery Services Limited | Birmingham | 1991 |
| Greyfriars International Ltd | Durham | 1999 |
| Greyhaven Enterprises Ltd | Doncaster | 2026 |
| Greyhaze Ltd | Birmingham | 2016 |
| Greyhound Grand National Limited | Faversham | 2014 |
| Greyhound Inn Management Company Limited | Stourbridge | 2017 |
| Greyhound Management Services Limited | Telford | 2021 |
| Greyhound Marketing Ltd | Wakefield | 2014 |
| Greyhound Mews Estate Management Limited | Pewsey | 2015 |
| Greyhound Road NO 18 Limited | Stafford | 2006 |
| Greymatters Engineering Ltd | Bristol | 2020 |
| Greystar Property Ltd | Dover, | 2018 |
| Greystoke Ltd | London | 2022 |
| Greystoke Management Company Limited | Newcastle Upon Tyne | 2004 |
| Greystone Auctions Ltd | Walsall | 2025 |
| Greystone Capital Holdings Ltd | Walsall | 2020 |
| Greytouch Accounting Ltd | Leicester | 2022 |
| Greytouch Partners Ltd | Leicester | 2022 |
| GRF Property Limited | Berwick-Upon-Tweed | 2013 |
| GRI Construction Engineering (UK) Co., Ltd | Stafford | 2017 |
| Grice's Wharf Limited | Borehamwood | 2016 |
| Grid Free Power Limited | Flint | 2010 |
| Grid Powr Ltd | Poole | 2025 |
| Grid Renewables Ltd | Canterbury | 2023 |
| Gridfell Limited | Bridgend | 2025 |
| Gridlance Limited | London | 2017 |
| Gridlink Limited | Hove | 2010 |
| Gridmesh Limited | Hove | 2010 |
| Gridward Limited | Bridgend | 2026 |
| Gridwest Limited | Bridgend | 2026 |
| Grief Doctor Ltd | Borehamwood | 2024 |
| Grier & Co Limited | Chester Le Street | 2016 |
| Grierson Dickens Trustee Limited | Farnham | 2022 |
| Grieveson Plastering Ltd | Stevenage | 2024 |
| GRIF034 Limited | London | 2012 |
| GRIF036 Limited | London | 2012 |
| GRIF037 Limited | London | 2012 |
| GRIF038 Limited | London | 2013 |
| GRIF049 Limited | London | 2013 |
| GRIF053 Limited | London | 2013 |
| Grifdean Limited | Wolverhampton | 2011 |
| Griffin 1963 Limited | Leicester | 2013 |
| Griffin Chapman Ltd | Colchester | 2007 |
| Griffin Companies Limited | Maldon | 2017 |
| Griffin Consulting and Investment Limited | Loughborough | 2015 |
| Griffin Court Management (Salford) Limited | Salford | 1994 |
| Griffin Investment Group Ltd | London | 2016 |
| Griffin Investment Services Limited | Edinburgh | 2016 |
| Griffin Lifting Services Limited | Basingstoke | 2023 |
| Griffin Management Solutions Limited | Leamington Spa | 2010 |
| Griffin Nominees Limited | London | 2004 |
| Griffin Park Homes Limited | Pentre | 2004 |
| Griffin Wylde Independent Financial Advisors Limited | Birmingham | 1994 |
| Griffith 1981 Limited | London | 2013 |
| Griffiths Corporation Ltd | London | 2018 |
| Griffiths Drive 11/07/1962 Limited | Wolverhampton | 2014 |