Cameron said he'd stay on as PM regardless of the outcome of the vote.
Cameron said he was on the fence and he'd choose how to campaign based on the results of his renegotiation. During campaigning he told the nation it'd be morally wrong to leave the EU, so obviously that was a lie.
Even 4 days before the vote, Cameron was saying the UK could stay in a reformed EU, despite Juncker saying simultaneously that there were no further concessions on offer and despite the Remain campaign choosing not to mention Cameron's "renegotiation" because it had achieved so little.
Osborne: Brexit will make every household exactly £4300 worse off. This figure was quickly dropped by the campaign because it was based on garbage calculations and focus groups showed nobody believed it (too high, too specific, inability to explain where it came from). Moreover it came from the Treasury which Osborne himself had slated as being unfixably politically biased when he first came to government.
Osborne: punishment budget, despite that he must have known that his best mate and political protector Cameron would quit rather than "do the hard shit", as he put it.
Turkey will never join the EU, despite the government's official position being that Turkey should join the EU.
The business uncertainty caused by an out vote will wreck the economy. Reality: all economic indicators not directly controlled by Mark Carney (i.e. devaluation of the currency) are doing fine.
There is no chance of an EU army. In reality an EU army was the very first thing the EU discussed after the Brexit vote.
etc etc etc. There were just tons of statements already proven to be lies thrown around by the pro EU camp, mostly coming from top politicians like the PM and Chancellor. The absolute blindness of EU supporters to this fact is remarkable.