A FORMER spy who infiltrated al-Qaeda for British intelligence is suing the government after being imprisoned for a murder that he blames on post-traumatic stress disorder (PTSD) caused by his dangerous missions.
The former agent, who cannot be identified for security reasons, is now serving life for the killing, which he claims was committed as a direct result of his mental condition.
He is seeking damages from the government and is appealing against his murder conviction on the grounds of diminished responsibility due to PTSD.
The former spy has told The Sunday Times that he worked as an agent for both MI5 and MI6 for almost six years, undertaking missions in Britain, Pakistan and Egypt.
He claims that while spying for MI6 in Pakistan, he was tortured, witnessed executions and lived in constant fear of being exposed as a British spy.