Sir Keir responded by saying he did not want to comment on the individual case but added he "did not want to dodge the challenge."
He then said: "On the cases, on the particular challenge of the speed, I now get regular reports on my desk telling me about why cases aren't going as quickly as they should.
"We have got new processes in place, we've got a new approach. We are acting much much more quickly."
Mr Ferrari then repeated the fact that 16 months had passed since Mr Willsman was suspended.
But the Labour leader told the monthly Call Keir show: "Yes I know that and we working on that, and I am determined we will deal with it.
I think in fairness, anybody looking at this will say we are taking this seriously. We are taking action. And we will be judged by the action we take.”
