Around 30 million voters are going to the polls in the General Election called by Theresa May just over seven weeks ago.
Polling stations all over the UK are open until 10pm on Thursday, with the results being declared overnight and throughout Friday.
With the campaigning over, party leaders have been casting their votes.
Polling day follows a frantic dash for votes in the final 24 hours of campaigning by the Prime Minister, Labour leader Jeremy Corbyn and the Liberal Democrat leader Tim Farron.
Mrs May campaigned across England in five constituencies; in London, Southampton, Norfolk, Nottinghamshire and Birmingham… see more