At a glance
• Recruitment firm boss Chao Xu jailed for ‘deviant’ sexual offences against women
• Xu is the second Chinese national in recent months to be caught drugging and raping women, in attacks that he filmed
• Xu, dubbed one of London’s worst ever sex offenders, also targeted women on the public transport network
A serial rapist dubbed one of London’s worst ever sexual offenders has been jailed for life for drugging women so that he could prey on them as they lay unconscious.