I tried to post this before but it fell into a black hole.

This question is obviously about a famous story in the media right now, but I am less interested in gossiping about the story than asking a particular legal question which applies, so I won't use any names or details, just the framework.

X alleges a crime has been committed against her in the past but does not give any details of the person's identity.

The identity of the alleged criminal (A) is "common knowledge" in the media but nothing is made public.

Y states publicly that the person X is referring to (A) is a well known TV presenter.

Z accidentally reveals the identity of A on a tv show, and then apologises for making the slip.

The tabloids print the story about A the following day.

The question is, can A sue anyone if he so chose? Can he sue X - who didn't give any clue as to the identity of the alleged criminal? Can he sue Z who did not allege that he is a criminal, but rather that he is the person widely believed by the media to be the person that X alleges is a criminal - which is apparently true? (I love all these Xs and Ys!). And in any case he did so accidentally and apologised for it. Can he sue the tabloids who are reporting about previous events rather than making any direct allegations against A?

Anyone got an idea of the legal position?