The herd of Conservative MPs is on the move again, this time obediently setting off towards the abattoir in which the careers of most will meet a grisly end. When historians come to write their accounts of the Conservative administrations of 2015-24, they will have a bewildering variety of ‘worst weeks’ to choose from, but the past seven days will have a strong claim to mark the moment when the fight went out of the parliamentary Conservative party and it became resigned to its fate.