Mayor of London Sadiq Khan has said it's been "frustrating" over the last few months that "more and more people" are not wearing masks on public transport. <br />He urged the public to "follow the rules" and "get the jab" in order to "protect Christmas". Report by Lewisl. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn
