Prof Charlie Jeffery from the University of Edinburgh said if the reports of 90% turnout were correct they would be "record-breaking".

"The highest ever turnout in Scotland was in Dundee East in 1950 - 88.6%," he said. "The highest Scotland-wide turnout was just over 80% at the UK election in 1951.

"I think we are going to be above that Scottish record and we may even see some places which exceed that Dundee East record."

All ballot boxes have now arrived for Inverclyde count, more than one hour after the polls closed.

Andrew Black
Political reporter, BBC Scotland

YouGov president Peter Kellner, who's at the Ingliston national count, tells me his organisation's latest polling data indicates a "small but consistent" shift from "Yes" to "No" and a "slightly higher determination to vote" among "No" people.

He reckons "No" voters are more frightened of independence than "Yes" voters are of the status quo.

Mr Kellner says his instinct is that, if the latest YouGov survey is wrong, the gap may actually be wider in favour of "No".

Some people here at the count are talking about the experience of the 1995 Quebec referendum, which saw an "emotional swing" to "Yes" when the campaign was going full tilt, but swung back when it was time to fill in the ballot paper, resulting in a (very slim) "No" outcome.

The plane has landed in Benbecula. If the skies stay clear, the boxes should be collected from Uist and Barra and loaded aboard by midnight - ballots should arrive in Stornoway by 00.30.

If the fog closes in again, Plan B is to take them across the Sound of Harris by fishing boat.

If the plane can fly, the count will be done by 02:30. If not, the count would be done by 05:00 or 06:00.

Jim Murphy also said the referendum had shown that votes for 16 and 17-year-olds had taught an important lesson about how engaged young people were. He said he backed votes at 16 across the UK in time for the next general election in May 2015.

Reevel Alderson
Home affairs correspondent, BBC Scotland

There are about 30 members of the public in the balcony of the Albert Halls where the Stirling count is taking place. I first covered an election nearly 40 years ago - October, 1974 - and I've never seen spectators at a count before.

A total of 122 ballot boxes from as far away as Killin and Tyndrum have now all arrived to be counted.

Labour MP Jim Murphy calls the events of today "remarkable" and predicts a "very, very big" No vote in his constituency of East Renfrewshire.

Suzanne Allan, BBC Scotland

One Yes Campaigner said in one part of Perth he counted turnout at 82% - it's usually 35%. He had tears in his eyes.

John Curtice
Professor of politics at Strathclyde University

Some early postal turnouts confirm the expectation that overall turnout in this referendum would be extraordinarily high.

As of this morning, 95% of the postal votes in East Lothian had been returned and 93% in South Ayrshire.

John Curtice
Professor of politics at Strathclyde University

YouGov's on the day prediction poll is based on the responses from 1,828 people who voted today, together with 800 who had already voted by post and were interviewed previously.

The ones who were contacted today consist of respondents to one of YouGov's polls conducted earlier this week, and the company claims there has been a small shift from "Yes" to "No" among this group.

Election aficionados caution that postal voters comprise a rather high 30% of this sample.

The first ballot box arrives at the Orkney count.

Fiona Walker, BBC Scotland

That's all the ballot boxes arrived at Grangemouth. 168 of them.

SNP MSP Fiona Hyslop tells the BBC: "The debate that some didn't want to have has energised a nation."

The referendum is not about "the politics of party, it's the politics of people", she claims.

Richard Smith

First time voters, 17-year-olds Rachel Falconer and Sean Davidson, are watching the Perth and Kinross count at Bell's Sports Centre in Perth.

The pair are the deputy head girl and deputy head boy at Perth High School. They said the referendum had stimulated much debate among their fellow pupils.

An hour after polling closed, all 75 boxes from 38 polling places had arrived at the Inverclyde count. All ballot boxes were received at the East Lothian count by 11pm.

Chief counting officer Mary Pitcaithly said counting was taking place at 32 centres around Scotland, including Ingliston where she is based.

She said: "The counting officers in all those 32 areas then give me information about the number of votes they are counting. They are authorised to release that and that's how you work out what the turnout is.

"After that they split the votes into 'Yes', 'No' and 'doubtful's. At the end of that, if it all adds up, we have a result from that area."

Labour MP Douglas Alexander tells the BBC: "We can only welcome the fact that we have come out in our millions to cast our vote".

He adds that the referendum will be a "historic judgement".

Steven Duff
BBC Scotland reporter

Deputy Lib Dem Leader and Gordon MP Malcolm Bruce tells me he's hopeful Aberdeenshire has voted "No", but admits it is still too close call.

The turnout in Aberdeenshire is thought to be more 80%.

Aileen Clarke
BBC Scotland

Are they expecting a long night? Someone is going round offering chocolate to the counters in Glasgow.

John Curtice
Professor of politics at Strathclyde University

A high turnout in this referendum means, of course, that the votes will take a long time to count. It could be at least 01:00 before the first results are in.