Sir Julian Lewis: Before the right hon. Gentleman resumes his narrative – he speaks with huge authority on this subject – can he underline what he told the House before the previous intervention? This was a case where someone reported what they were doing, was wrongly told it was okay to proceed and was then hit with a bill for thousands of pounds retrospectively. Surely that is incompetence and maladministration. Is there not any way for that person to have recourse to justice?

[Ed Davey: The right hon. Gentleman makes exactly the right point and as her MP I am pursuing that line of argument, but we need a change of culture and attitude at the DWP to be able to proceed with these cases on behalf of our constituents. She told me that the whole thing makes her want to give up caring and give up working. That is how affected she has been. Who is it helping, when carers feel like that? ...]