South Yorkshire's crime commissioner has paid tribute to father-of-two Chris Marriott who died when a car ploughed into a crowd of people as he was trying to assist a stranger. <br /> <br />Describing the incident as an "appalling and heartbreaking tragedy", Dr Alan Billings expressed his deep sorrow for Mr Marriott's family. Report by Alibhaiz. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn
