Welfare Reform and Work Bill

May I try to make sense of this? I do not think that the Government know what the disposable income per head is of the families that are subject to the benefit cap. That is my objection, because big families obviously have a disposable income that is divided by the number of people in the house. I do not think that these metrics exist, and therefore the noble Baroness is absolutely correct: it is not safe to rely on earnings, because you are not comparing like for like. The really important question for me is: how do we know, in relation to the impact it has on children, what the disposable income per head is in those families that are subject to the cap?