Thornbury man admits performing lewd act in front of cop Court hears Joseph Hannis thought he was chatting to 13-year-old girl online THE BIGGEST STORIES ACROSS BRISTOL IN YOUR INBOXInvalid EmailSomething went wrong, please try again later. SIGN UP When you subscribe we will use the information you provide to send you these newsletters. Your information will be used in accordance with ourPrivacy Notice. Thank you for subscribingWe have more newslettersShow meSee ourprivacy notice A Thornbury man committed a sex act in front of a police officer - who he thought was a teenager. Joseph Hannis was caught after chatting online to who he thought was a girl aged 13.