Mark Smith: Referendums should be much harder to hold – and to win

THE march in London at the weekend in support of a second EU referendum was a delight for fans of satire and logic. The wittiest of the placards was the one inspired by Banksy that featured a partly-shredded Leave leaflet, but all the posters and speeches made the same logical point: there were no detailed plans for Brexit in 2016 so there should be another vote when the plans are clearer. And is it any wonder that the protests were the biggest since the Iraq demo in 2003? We went to war on a li .