Boris Johnson has announced that 'Covid marshals' will be sent out to make sure the public follows social-distancing rules.They say this is to help local authorities support social distancing in towns and city centres.The Prime Minister announced the latest measures when he updated the public at a government press briefing on Wednesday (September 9).He was joined by Professor Chris Whitty, Chief Medical Officer for England and Chief Scientific Advisor, Sir Patrick Vallance, for the first public briefing in six weeks.On social distancing, Mr Johnson said: "I know that over time the rules have become quite complicated and confusing."We are responding, and we are simplifying and strengthening the rules, making them easier for everyone to.