I don’t know if they took in a show while they were there, but Gavin Robinson and Gregory Campbell made something of a show of themselves in London last week: they were there in connection with Gerry Adams’s trial for being a leader of the IRA. “It would be seismic” Gavin Robinson told reporters, if Gerry were convicted. In a way Gavin was doing the Charlie Haughey thing. You remember how in 1987 Charlie hurried to be by the side of the triumphant Stephen Roche when he won the Tour de France. There was one vital difference: Charlie only went abroad when Stephen had safely passed the finishing line; Gavin reached a state of premature ecstasy, only to find himself undone when the case collapsed.