The CAA cannot do anything about this although they insist on trying. Most commercial pilot ground schools make a practice of it, thus 'feedback question banks'. The 'PPL Confuser', published many years ago was, in my view, a lift from the actual exam papers; the CAA were powerless to stop it.
The author of the Confuser actually sent a copy of the questions he had written to the Head of Standards at the CAA asking if he could publish it. The answer was Yes! The head of Standards then informed the Chief Ground Examiner who looked at the questions and recognised them as his own! The CAA can take action re Copyright.