Isabel Hardman

In the past week, David Cameron has had to resign after losing the referendum on Britain’s European Union membership, and yet is still heading into Prime Minister’s Questions in a stronger position than his opposite number, who has not resigned. Jeremy Corbyn is now a Labour leader whose MPs have overwhelmingly stated that they have no confidence in him. His Shadow Education Secretary Pat Glass, who was only appointed at the start of this week, has just resigned saying that the ‘situation is untenable’. Emma Lewell-Buck has also stood down as a shadow minister, saying she is ‘heartbroken at state of party and recent events’. That Labour is so unstable when the Tories are in turmoil too may be consolation for Conservative MPs.

Westminster is at its fastest-moving and most unstable for years. Portcullis House and the tea rooms are buzzing with MPs discussing the demise of their leader and who they’ll back in the contest to replace him: and that goes for both main parties, though of course the golden rule of politics still applies, which is that no matter how colossal the Tory mess is, Labour’s will always be gargantuan in comparison. Today the Conservatives decided to move back the date by which their leader must be confirmed to 9 September, which will come as a relief to those Tories who were grumbling about being hauled back from the Mediterranean a week early. The consensus in the party is that the two frontrunners in the leadership contest are Boris Johnson and Theresa May.

The demonstration in support of Jeremy Corbyn is starting to dissipate, but Labour MPs have this evening been contacted by their whips to advise them on their personal safety as they leave Parliament after the late votes. They have been advised on what entrances are being kept open for their safety, and told that anyone who is worried should contact the Serjeant at Arms. Labourites are particularly annoyed that their party's whips have had to send this message to them given they confronted Jeremy Corbyn at the parliamentary Labour party meeting this evening over the behaviour of the grassroots group Momentum. Ian Murray received a big cheer for telling him to 'call off the dogs', and Jess Phillips also accused Momentum of stirring up anti-Zionist sentiment.

Jeremy Corbyn's enemies in the Labour party had hoped that the leader would do the 'decent thing' and stand down after the day-long programme of frontbench resignations had made it clear that he will not be able to run an effective opposition. But this evening he has made it clear that he doesn't agree with this assessment of the state of his frontbench, releasing a statement that says he will carry out a reshuffle tomorrow, and fight on. You can read the full statement below. What it means is that the coup against the Labour leader will have to be brutal and will likely involve a motion of no confidence being passed by the Parliamentary Labour Party. What happens next depends on who you listen to.

Jeremy Corbyn is giving a speech this morning about Labour’s response to the EU referendum. Rumours have been sweeping the party overnight that the Labour leader will use the event to step down and hand over the reins to John McDonnell, who has been on manoeuvres for months. But aides deny that this will happen today. Nevertheless, there must be recognition in the Corbyn team that the situation is pretty precarious. The lengthy Shadow Cabinet meeting yesterday wasn’t as furious as some other parts of the parliamentary Labour party might have hoped, but some members are discussing resigning en masse to trigger a change at the top of the party.

In the past few minutes, two Labour MPs - Margaret Hodge and Ann Coffey - have submitted a motion of no confidence in Jeremy Corbyn. This is not a surprise given how angry the parliamentary party was after last night’s referendum results in its heartlands, but it now depends on whether their parliamentary colleagues have enough confidence to speak in its favour at a discussion at the parliamentary Labour party meeting on Monday, and then to back it in a secret ballot of the parliamentary party the following day. It is not yet clear whether the rebels, who have been preparing for this for a while, yet have the numbers. And even if they do, Corbyn's side believe he would automatically make the ballot paper in a new leadership contest. UPDATE, 12.

As reported yesterday on Coffee House, MPs have been incredibly frustrated by the response of parliamentary spending watchdog Ipsa to their requests for extra security measures following the murder of Jo Cox. This afternoon Ipsa's chair Ruth Evans has written to MPs saying the regulator will 'review and accelerate' the process of approving applications for security funding, acknowledging that there have been complaints about how it is working at the moment. If Ipsa is able to speed up its approvals process, this will come as a huge relief to those MPs who are understandably nervous about their own vulnerability to copy cat attacks following Cox's death.