London, June 23 (IANS): British Prime Minister David Cameron and several other leaders cast their ballots in a historic referendum on whether the country should stay or exit the European Union (EU).

Cameron and his wife Samantha voted at the Central Methodist Hall in London.

On the way to the voting centre, the Prime Minister ignored questions about the weather, saying only "good morning", The Telegraph reported.

Opposition Labour Party leader Jeremy Corbyn cast his vote at Pakeman primary school in his Islington constituency.

Asked if he was feeing confident, the Labour leader smiled and said "Extremely, it's a very good day."

On the outcome of the referendum, he joked: "You could either check the wind or check the bookies," adding, "the bookies usually get it right".

Scotland's First Minister Nicola Sturgeon cast her vote in Glasgow, while Gibraltar’s pro-remain Chief Minister Fabian Picardo and his wife also cast their ballots. 

Polls suggest that 85 per cent of the island, a British territory off the southern coast of Spain, wants to remain in the EU.

An estimated 46,499,537 people -- a record number for a British poll -- are entitled to take part in the vote.

The registered voters include Britons from England, Wales, Scotland, Northern Ireland and Gibraltar. These represent all 380 local government area in England, Scotland and Wales, plus one each for Northern Ireland and Gibraltar.

British citizens living abroad have already cast their vote by mail.

Landmark buildings across Europe, including in Madrid and Warsaw, have been lit up with a Union Jack to show support for the Remain campaign, according to video from the Business Insider.