'Wear a proper suit' - did Cameron have any right to attack Corbyn's appearance?

David Cameron's launched a personal attack on Jeremy Corbyn over his appearance in the Commons yesterday ... saying he should "put on a proper suit" and do up his tie. The Prime Minister said that's what his mum would have thought of the Labour leader .... and there was mention of Mr Corbyn's mum too. It was all part of heated exchanges in the Commons yesterday. Did Cameron have a point? But should it matter how they dress? Are the days of wearing a suit and tie to work - coming to an end? Stephen got the views of etiquette expert William Hanson and commentator Brian Pelan.