Voters are going to the polls across Britain to decide who will form the next government.
Polling stations opened at 7am and close at 10pm in the 650 constituencies of the United Kingdom.
Party leaders were among the first to cast their votes.
Conservative leader David Cameron has cast his vote at Spelsbury Memorial Hall in Witney, Oxfordshire, accompanied by wife Samantha, while Labour leader Ed Miliband has been seen heading into a polling booth with his wife Justine at Sutton Village Hall in Doncaster North.
British Prime Minister David Cameron and his wife Samantha pass demonstrators as they leave a polling station | Image: Peter Macdiarmid/Getty Images
UKIP leader Nigel Farage has also cast his vote at Eastcliff community housing office in Ramsgate, Thanet South.
UKIP leader Nigel Farage arrives to cast his vote for the South Thanet constituency | Image: Carl Court/Getty Images
Greens leader Natalie Bennett voted at Ossulston Tenants' Hall in the London constituency of Holborn and St Pancras and SNP leader Nicola Sturgeon told her Twitter followers that she has also voted this morning at Broomhouse Community Hall in Ballieston, Glasgow.
There are 3,971 candidates vying to take up a seat in the House of Commons.
Labour Party leader Ed Miliband leaves the polling station at Sutton Village Hall in Sutton after casting his vote | Image: Chip Somodevilla/Getty Images
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.
A total of 10,000 council seats across 290 local authorities are also up for grabs, and six mayors in England will be elected as well.
Polls put Labour and the Conservatives at 35 per cent each, meaning a hung parliament is the likely outcome.
Results are expected in most constituencies by 6am tomorrow.
The weather forecast for Thursday there is for a mostly fine, dry and settled day with some showers around.
