A superb, perfectly judged example of what a political interview should be. When BBC political interviewers challenge the powerful, they should always do it as effectively as this.
The choice of Chris Grayling to champion Liam Fox's cause was profoundly misconceived - his involvement with Atlantic Bridge should have been enough to ring the warning bells. He was probably selected for his emollient personality and style - another misjudgement, since this was his undoing - a champion with a lance made of putty.
With friends like this, Fox needs no enemies ...