He's breaching bar council professional ethics. Just for example -
20. The following paragraphs may assist you to identify situations in which expressing a personal opinion in relation to anticipated or on-going litigation might breach your Core Duties and/or specific rules in the BSB Handbook, or put you in other difficulties.
27. Even if all advocates in a case express personal opinions to the media during the currency of proceedings, there is the potential for all of them to be in breach of their professional duties, not least through damaging the confidence which the public places in the independence and objectivity of the profession and in the fairness and impartiality of the administration of justice. The expression of personal opinions should not be used as a litigation tactic. Such behaviour could be seen as usurping or undermining the proper role of the jury or judge in finding the facts on the basis of admissible evidence, and in reaching decisions as to the law based on the arguments. Even if you do not intend this, there is a risk of you being seen as conducting or encouraging ‘trial by media’, or of trying to secure an unfair advantage in the litigation by swaying public opinion.
30. Personal views expressed to the media in connection with a criminal trial in which you are involved may come to the attention of witnesses and jurors. Those views may be given particular and undue weight, particularly if you are continuing to act as counsel in the case. Expressing such views could undermine the fairness of the trial, and could involve an abuse of your role as an advocate. More generally, this type of behaviour could undermine both the administration of justice and your independence, and bring the profession into disrepute.
MOO