As I understand it the CAA do not do assessments any more. The idea is that a Training Provider will assess the student, and train them to a standard where they can pass the flight test and oral exam. Realistically, it should make very little difference to the amount of flying they do but at least they won't have to sit the ground examinations. Some technical refresher will no doubt be required involving a good read of the books.
There is no reason to involve the CAA other than to send in the licence and renewal paperwork when the test is passed.