Chao Xu had also filmed and upskirted hundreds of other victims around London For free real time breaking news alerts sent straight to your inbox sign up to our breaking news emails Sign up to our free breaking news emails Sign up to our free breaking news emails Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice A serial rapist suspected of being one of the UK’s worst sex offenders has been jailed for life with a minimum of