Brexit: Why political crisis could be well on the way

Westminster might be deep in recess, but the Brexit wars that defined the last political term are firing up once more.Former UKIP leader Nigel Farage is teaming up with the Leave Means Leave team to campaign against what he describes as Theresa May's "fraudulent" Brexit plans.As the two campaigns ready for battle, Mrs May and her team are preparing for battle too - in Brussels and at home.