Sign up for MHLO on the Subscriptions page: you can sign up for free email updates, the email discussion list, the online forum and the CPD scheme (which provides 12 hours for £60 and is suitable for lawyers and non-lawyers).
Online forum | Latest topic on forum: Sec 72 (1) b ii MHA
Court of Appeal judgment.
R v Antoine  UKHL 20
Possible Bailii link (not there when checked last night, but might have appeared since)