Their anger is understandable after the vote in June, as losing would have been somewhat traumatic. Pollsters, bookies and analysts predicted - even on the day - that they would win, but it was not to be. Such a shock would of course send them flailing around for something to cling onto to provide certainty as they digest why Britain voted Leave. Jeremy Corbyn stuck out during the campaign for his restrained commitment to the Remain cause. I even wondered if he was trying subtly to turn his supporters against the EU. So it was all too easy for senior pro-EU figures, when given by Laura Kuennsberg the chance for some catharsis last night, to pile onto Mr Corbyn.

The Labour leader may have given himself "7 out of 10" for his pro-EU campaigning efforts, but his fellow Remainers offered much less charitable verdicts. Will Straw, head of the official Remain campaign, complained that he had been "let down" by Mr Corbyn's "lukewarm" support. Lord Mandelson accused him of "holding back" Remain campaigners and "greatly" damaging their efforts. "They felt undermined, at times they felt actually their efforts were being sabotaged", he added. It's very easy for them to pin the Remain camp's failure on Mr Corbyn, but it saves them having to face up to a harder truth: they had just as much to do it too.