George, 15, from Hertford, was last seen around 3.50pm on Wednesday, July 29, leaving his home address. A Herts Police spokesperson said: "Officers are growing increasingly concerned for George’s welfare." The teenager has known connections to South Ockendon in Essex as well as East London. Members of the public are encouraged to share the police appeal and are asked to comment with the postcode prefix where it has been shared. In an emergency, or if George is seen at that moment, people are advised to call 999 immediately.