Health minister and Chief exec

Mr David Anderson has been exonerated for his part in the Health Service issues after we hear that some of the advice he was given by his senior Civil Servants wasn't all-together 'accurate'. That's fine. However, my concern is that these 'senior advisers' still seem to be in place and could still give similar 'bad' information to the incoming Minister. Surely they should be removed from their posts before this can happen?