- Gainsborough 1885-1983
- Gainsborough 1997-
- Gainsborough and Horncastle 1983-1997
- Galloway 1918-1983
- Galloway and Upper Nithsdale 1983-2005
- Galway 1801-1918
- Galway 1832-1885
- Galway Connemara 1885-1922
- Galway East 1885-1922
- Galway North 1885-1922
- Galway South 1885-1922
- Gateshead 1832-1950
- Gateshead East 1950-1997
- Gateshead East and Washington West 1997-
- Gateshead West 1950-1983
- Gatton 1660-1832
- Gedling 1983-
- Gillingham 1950-
- Glamorganshire 1660-1885
- Glamorganshire Eastern 1885-1918
- Glamorganshire Mid 1885-1918
- Glamorganshire Southern 1885-1918
- Glanford and Scunthorpe 1983-1997
- Glasgow 1708-1885
- Glasgow Anniesland 1997-2005
- Glasgow Baillieston 1997-2005
- Glasgow Blackfriars and Hutchesontown 1885-1918
- Glasgow Bridgeton 1885-1974
- Glasgow Camlachie 1885-1955
- Glasgow Cathcart 1918-2005
- Glasgow Central 2005-
- Glasgow Central 1885-1997
- Glasgow College 1885-1918
- Glasgow Craigton 1955-1983
- Glasgow East 2005-
- Glasgow Garscadden 1974-1997
- Glasgow Gorbals 1918-1974
- Glasgow Govan 1918-2005
- Glasgow Hillhead 1918-1997
- Glasgow Kelvin 1997-2005
- Glasgow Kelvingrove 1918-1983
- Glasgow Maryhill 1918-2005
- Glasgow North 2005-
- Glasgow North East 2005-
- Glasgow North West 2005-
- Glasgow Partick 1918-1950
- Glasgow Pollok 1918-2005
- Glasgow Provan 1955-1997
- Glasgow Queen's Park 1974-1983
- Glasgow Rutherglen 1983-2005
- Glasgow Scotstoun 1950-1974
- Glasgow Shettleston 1918-2005
- Glasgow South 2005-
- Glasgow South West 2005-
- Glasgow Springburn 1918-2005
- Glasgow St Rollox 1885-1950
- Glasgow Tradeston 1885-1955
- Glasgow Woodside 1950-1974
- Glenrothes 2005-
- Gloucester 1660-
- Gloucestershire 1660-1832
- Gloucestershire Eastern 1832-1885
- Gloucestershire South 1950-1983
- Gloucestershire West 1950-1997
- Gloucestershire Western 1832-1885
- Goole 1950-1983
- Gordon 1983-
- Gorton 1885-1918
- Gosport 1974-
- Gosport and Fareham 1950-1974
- Govan 1885-1918
- Gower 1885-
- Grampound 1660-1821
- Grantham 1660-1997
- Grantham and Stamford 1997-
- Gravesend 1832-1983
- Gravesham 1974-
- Great Bedwyn 1660-1832
- Great Grimsby 1983-
- Great Grimsby 1660-1918
- Great Marlow 1660-1885
- Great Yarmouth 1660-1950
- Great Yarmouth 1983-
- Greenock 1832-1974
- Greenock and Inverclyde 1997-2005
- Greenock and Port Glasgow 1974-1997
- Greenwich 1832-1997
- Greenwich Woolwich East 1974-1983
- Greenwich Woolwich West 1974-1983
- Greenwich and Woolwich 1997-
- Grimsby 1918-1983
- Guildford 1660-
2,145 constituencies in total