The UK is voting on Thursday on its membership of the European Union in a historic referendum on whether they should remain a member of the European Union or leave.
Counting is said to have begun and the polls suggest the result could still go either way.
According to Evening Standard, the polls suggest the debate is neck-and-neck as a sneak at the final poll suggest a narrow lead for the Remain camp.
Those wanting to remain lead at 52% wanting to stay in the European Union, against 48% for exit.
We bring you live updates of the polls which opened from 7am and will end at 10pm.
Voters are using #iVoted hashtag to show they have cast their ballot
According to the BBC a record 46,499,537 people are entitled to take part from provisional figures given by the Electoral Commission.
This is only the third nationwide referendum in UK history but is strongly bedeviled with a four-month battle for votes between the Leave and Remain campaigns.
Prime Minister David Cameron and wife Samantha cast their vote in London.
The referendum ballot paper asks the following question: "Should the United Kingdom remain a member of the European Union or leave the European Union?"
It is expected that whichever side gets more than half of all votes cast will be considered to have won.
Lord Rose, former Marks and Spencer chairman heads the main cross-party group campaigning for Britain to remain in the EU and backed by important personalities from the Conservative Party that includes David Cameron and Chancellor George Osborne.
On the other hand a number of Labour MPs including Gisela Stuart and Graham Stringer as well as senior Conservatives such as Michael Gove and Boris Johnson plus are pushing for UK to leave.
Tony Blair, the former Labour prime minister used his Twitter account to announce that he voted UK to remain the EU in Thursday’s referendum.
He said: “I believe voting to Remain will secure Britain’s place as a proud, influential country with a strong economy.”