R v Johnson (Dean) (2007) EWCA Crim 1978
From Mental Health Law Online
The defendant knew his actions were legally wrong but did not believe them to be morally wrong: because he knew they were legally wrong he was not entitled under the M'Naghten Rules to ask the jury to enter a verdict of not guilty by reason of insanity.
External links
ICLR - Permission to appeal refused by House of Lords, 7/11/07