Hazell's QC is Lord Alex Carlile.
From wikipedia: "Lord Carlile of Berriew is a practising barrister and former head of chambers of 912 Bell Yard, a leading set of barristers' chambers. He successfully defended Diana, Princess of Wales's butler, Paul Burrell, against charges that Burrell had stolen some of her estate's belongings.[1] In 2001 he was appointed the independent reviewer of terrorism legislation.[2] Carlile stood down as head of chambers at 9-12 Bell Yard in March 2008."
and...surely not where they are heading with this defence????:
Lord Carlile also has a particular interest in mental health issues, was a co-founder of the Welsh charity Rekindle and has chaired the Select Committee of both Houses of Parliament on recent mental health legislation.