The result of the EU referendum is due to be announced later than initial 7am predictions with a source saying that it could be after “breakfast time” on Friday.
“In the Scotland for the referendum all but one of the counting officers was overly optimistic on how quickly they could declare. Their final result was at 8.30am,” he said.
Once the polls close at 10pm this evening ballot boxes will be transported to the country’s 382 local count centres were they will be verified first, and then split between Leave and Remain.
Count centres include 380 in England, Scotland and Wales, one in Northern Ireland and one in Gibraltar.
Results will then be sent to regional count centres and then fed in finally to the national centre in Manchester.
The only provision for a recount is if there is an issue with the process of counting at a local centre and not just if the result is very close.
An official said there had been “no issue at all” with people using pen or pencil to mark their ballot paper, before joking he “wished to draw a line under it”.
Media reports from earlier today said voters had been panicking that their ballot papers could be altered if they had written in pencil had allegedly led to a binge buy of pens.