Counting is under way in a referendum that will decide whether the UK remains a member of the European Union.
The counting is taking place at centres around the UK in a vote widely seen as too close to call.
There is no exit poll - so the millions who cast a ballot will have to wait until results start coming in to find out how the country voted.
Flash floods in the South of England disrupted voting and led to some polling stations being relocated.

Gibraltar was the first to declare a result with 96% of voters in the British overseas territory backing Remain. A big Remain win had been predicted in Gibraltar amid concerns about its border with Spain.
An online survey taken on polling day of 5,000 people by YouGov suggests the Remain side running at 52% of the vote, to Leave's 48%. Ipsos Mori have released polling from Thursday and Wednesday suggesting Remain will get 54% and Leave 46%.
Ukip leader Nigel Farage has told the Press Association the Remain camp has won based on "what I know from some of my friends in the financial markets who have done some big polling".
The referendum result, which should be known by breakfast time on Friday, could be a turning point in the UK's relationship with Europe and the rest of the world.
If the UK becomes the first country to exit the EU it will arguably be the biggest blow to the 28-nation European Union since its formation.

A vote to remain would see Britain gain exemption from "ever closer" political union and other concessions secured by Prime Minister David Cameron in a renegotiation of the country's membership terms.
It should become clear which way the vote has gone by the early hours of Friday morning but if it is as close as the final opinion polls of the campaign suggested, it may take until closer to 07:00 BST (06:00 GMT) for the result.
Many polling stations in the South East of England reported high turnouts despite bad weather, so declarations could be later than previously expected.
Results predicted for between 0200 BST and 0300 BST could be put back an hour or two, it was being suggested, in some parts of the region.
There were also concerns that some commuters stranded in London because of chaos on the railways might not have got home in time to vote.

They characterised themselves as the plucky underdogs, in with a shout, but certainly the real outsiders.
But, in part by using that status, indeed building a narrative of the people versus the elites, they have got themselves to a position where they might end up on the winning side.

The pound surged against the dollar after polls closed at 22:00 BST and the YouGov poll suggesting a Remain victory.
A record 46,499,537 people were registered to vote in the referendum, according to provisional figures from the Electoral Commission.
Early reports from around the country suggest turnout has been higher than at last year's general election, with Kettering, in Northamptonshire, reported to be 76% and Newcastle 68%.

From 22:00 BST, there will be comprehensive coverage on the BBC News website and app with live text and video streaming, reaction and analysis from BBC editors and others. There will also be an up-to-the-minute full results service and details of all local results.
BBC One, the BBC News Channel and BBC Parliament will broadcast a results show hosted by David Dimbleby alongside BBC experts and special guests from 21:55 BST. Coverage continues through the night and Sophie Raworth, Andrew Neil and Victoria Derbyshire pick up the coverage on Friday morning.
The results programme will be streamed internationally on the BBC News website from 22:00 BST.
BBC Radio 5 live will have coverage as the results come in, as will Radio 4 from 23:00 BST until the Today programme picks up at 06:00 BST on Friday.
From 22:00 GMT, television viewers outside the UK can tune in via BBC World News and BBC World News America. Listeners outside the UK can tune into BBC World Service radio for regular updates.
Referendum night - what to watch out for
Sealed ballot boxes are being transported to the venue for each of the 382 local counting areas.
These represent all 380 local government areas in England, Scotland and Wales, plus one each for Northern Ireland and Gibraltar.
Results from these areas will then be declared throughout the night, along with result totals from 11 nations and regions.

Jenny Watson, chief counting officer, will announce the referendum result at Manchester Town Hall after all 382 local totals have been certified and declared.
Any recounts will take place at a local level only, as there is no facility for a national or regional recount, she added.
The referendum followed a bitterly-fought four month campaign, which saw Mr Cameron pitted against senior colleagues in his own party, who were campaigning for Britain to leave.
A Brexit vote could deal a fatal blow to Mr Cameron's career as prime minister, although he has vowed to stay on whatever the outcome.
Conservative MP Robert Syms says he and other Vote Leave Tories have written to Mr Cameron telling him he has a "duty" to stay on regardless of the result - the letter has been signed by all the cabinet ministers who broke ranks to back Leave, including Boris Johnson and Michael Gove.
Mr Cameron promised to hold a referendum on Britain's EU membership ahead of last year's general election, following relentless pressure from his own MPs and the UK Independence Party, which was taking votes - and later - MPs from Mr Cameron's Conservatives.
He initially suggested he would be prepared to back an out vote if he did not get what he wanted from his renegotiations.

But once the date of the referendum was announced he threw himself into the campaign for Britain to remain, arguing the country would be "stronger, safer and better-off" in the EU.
Nearly all of Britain's opposition parties, including Labour and the Scottish National Party, backed remaining in the EU, along with the majority of business leaders.
The Leave campaign - headed by former mayor of London and Conservative MP Boris Johnson - argued that the only way Britain could "take back control" of its own affairs would be to leave the EU.
The Leave campaign dismissed warnings from economists and international bodies about the economic impact of Brexit as "scaremongering" by a self-serving elite.

Immigration was a key issue in the campaign, with the Leave campaign arguing that net migration from the EU could never be reduced while the UK was signed up to free movement rules.
In an eve-of-poll interview with Telegraph, Mr Johnson, who has long been seen as bidding to be the next prime minister, claimed the vote was more important to him than his future in British politics.
"Frankly, if this is the end of my political career… I've done eight years as mayor of London, I enjoyed it hugely, it was a massive privilege. Fine by me."

Published Date:2016-06-24