Warning: This stream will contain details of sexual offences A sex offender who drugged his victims and installed spy cameras around his home has been jailed for life with a minimum term of 14 years – as police appeal for hundreds more potential victims to come forward. Chinese national Chao Xu, 33, who was a law postgraduate student at the University of Greenwich in London between 2015 and 2016 and ran his own recruitment business, targeted victims at networking events at his home. He invented his "Spring of Life" cocktail, a mix of alcohols and Chinese herbal medicines, to sedate guests, and planted spy cameras in items including air fresheners, sanitary packaging and speakers. #UKNews #UK #SkyNew s SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews Follow us on Twitter: https://twitter.com/skynews Like us on Facebook: https://www.facebook.com/skynews Follow us on Instagram: https://www.instagram.com/skynews Follow us on TikTok: https://www.tiktok.com/@skynews For more content go to http://news.sky.com and download our apps: Apple https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8 Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GB Sky News Daily podcast is available for free here: https://podfollow.com/skynewsdaily/ To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales