Strong headwinds facing UK Prime Minister Theresa May's Chequers Brexit plan. / Michel Barnier doesn't like it much, Brexiteers don't like it at all, but Theresa May still insistent that Chequers is the best plan. / This week, we look at the political to-ing and fro-ing in the UK and get the views of Conservative MP and former UK Attorney General Dominic Grieve.