Image source, PA

If you're a voter in Scotland and you want to know when your constituency might declare the result, then look no further.

Our colleagues over at BBC Scotland Online have put together a list of estimated declaration times for Scotland's 59 seats, based on what happened at the last general election in 2010.

Three hours to go until voting closes and the excitement is certainly building. Here's a guide to what you can expect after the polls close, and how you can keep up to date with the latest results, developments and reaction - across BBC TV, Radio and Online.

Image source, PA

Well there's just over three hours to go until polling closes, at 22.00 BST. If you haven't been to cast your ballot yet, and you're not quite sure how it all works, here's a guide on how to vote.

This polling station, in Langsett in the Peak District, is hard to miss. The Bank View Cafe painted the dots for Le Tour de Yorkshire last year.

Image source, AP

So imagine ... the results have all come in and no single party has a majority. That's when one party has more MPs than all the other parties put together. A party would have to win 326 seats to form a government on its own. But what happens if no party reaches that critical number? It's called a hung parliament. Find out what happens next...

The polling booths are open until 2200 BST. But the Electoral Commission is urging voters not to leave it to the last minute. There were angry scenes at some polling stations in the 2010 general election when some voters were turned away. The law was changed in 2013 to clarify the rules. So anyone who arrives at the polling station before 2200 BST - and is still waiting to vote then - is allowed to vote.

Carole Walker
Political correspondent

BBC political correspondent, Carole Walker, has been following David Cameron's campaign. She was up early this morning to report live on him on casting his vote. With limited election coverage on the BBC until the close of voting, there's been a brief lull. Carole says: "I'm hoping to catch a bit of sleep before heading to the count in Witney in time for the close of polls. The Witney declaration is not expected until after 4am and we should have the results of some key marginal seats by then."

Image source, Wales News Service

Bride-to-be Rachel Williams stopped off on her way to the church to cast her general election vote.

She dropped in at a Newport polling station in a white wedding gown but made sure she voted separately from her fiance, Mike Court, so he wouldn't see her before they tied the knot.

Image source, AFP

While most of us head off to church halls or primary schools to exercise our democratic right...some people get to vote in the pub. The Anglesea Arms in South Kensington, London, is one of a number of pubs across Britain that are doubling up as polling stations today.

Don't forget there are local elections also taking place in some areas. In Sheffield, the votes in the council elections won't be counted until Friday afternoon. Spare a thought for the council official who's been given the task of sleeping with the ballot boxes overnight - to make sure no-one tampers with them.

Voting conditions have been mild and dry for most parts of the UK with occasional sharp showers across Wales, the Midlands and eastern England. Those still to vote can expect the evening to be largely dry with the odd thunderstorm. As the ballots are counted temperatures will drop, with a touch of frost expected in parts of Scotland.

So how does someone vote when they are thousands of miles from civilisation, with no postal service for months to come?

A spokeswoman for the British Antarctic Survey said there were close to 40 British nationals on three bases in Antarctica.

Most, she said, will have registered for a relative or partner to vote by proxy. “Theoretically, they could all have voted by post, but it takes a really long time.

“At the moment, there is no ingoing or outgoing traffic – it’s winter there and it’s completely dark. Every plane and ship left six weeks ago so they wouldn’t even have been able to post their vote.”

More on the polling station dogs from BBC Newsbeat. Do they have to be tied up outside - or can you bring them in? Yes you can, apparently - as long as they're well behaved...

In Northern Ireland, the leader of the Alliance Party, David Ford, has voted in the general election. He's not standing for a seat at Westminster. He's a member of the Northern Ireland Assembly and Minister for Justice.

Image source, Paul King / The Wokingham Paper

Spotted in Wokingham, Berkshire..a polling station in a portable toilet.

Up to 3,000 people may have received a polling card with the wrong address printed on it in Hounslow, west London. Election rules require you vote at the station you have been assigned. Hounslow Council has apologised and is running a shuttle bus service between polling booths in Southville Road and Bedfont Library between 17:00 and 22:00.

Image source, Twitter

The Twitter hit of the day - pictures of dogs, patiently waiting for their owners outside polling stations

A polling station in Nottinghamshire has apparently been struck by lightning. The polling station - at Strelley in the Broxtowe constituency - has lost its electricity, according to returning officer Ruth Hyde.