Surely Byrne -v- Dean is against you Heric. What right thinking member of society would approve of antisemitism?
You will recollect in Byrne -v- Dean the sting of the allegation was that Byrne had informed against a breach of alcohol licensing laws - which made him persona non grata in the club in question. However he was not defamed because a right thinking member of society would have wished the law to be upheld.