The poll put the Conservatives on 316 seats, Labour on 239, the Scottish National Party on 58, the Liberal Democrats on 10 and UKIP on two.

The Greens are predicted to win two seats, Plaid Cymru four and others 19, according to the survey.

There are 533 parliamentary constituencies in England, 59 in Scotland, 40 in Wales and 18 in Northern Ireland.
The parties are therefore trying to get 326 seats to command a majority.

The Ipsos MORI/Gfk NOP poll was carried out for Sky News, ITV News and the BBC at 141 polling locations in 133 constituencies across Great Britain.