>> Britain's voting in a historic referendum on EU membership. Polls are saying it's too close to call. It may all come down to how many people vote.
in is forecast almost non-stop on Thursday, which could deter some. A record 46 million people are registered. Reuters UK Bureau Chief, Guy Faulconbridge, has been following this story.
>> After 10 o'clock London time, when the polls close, the votes will be counted and first of all, we're gonna get partial numbers for turnout in all 382 different areas across the country at different times. After that we're gonna get the yes-no percentages for each of those 382 different areas.
We expect a result early on Friday morning.>> Some who certainly aren't put off by the rain. Prime Minister David Cameron and his wife, Sam, voting as polls open. Scotland's First Minister, Nicola Sturgeon, also firmly backs staying in the EU, unlike leader of the UK Independence Party, Nigel Farage.
The outcome of the referendum could make or break political careers. And a victory for out could unleash turmoil on financial markets. Most hope wet weather won't be a deciding factor, but the rain just might herald a new dawn on Friday.