You might have thought that, after more than 30 years of campaigning to leave the EU, Eurosceptic MPs would have celebrated the historic victory of triggering Article 50 in various bars of the Commons. The Maastricht Treaty, undertaken to integrate Europe, was signed on February 7, 1992 – 25 years ago this week. But my father Bill Cash – the chief Maastricht rebel, who was once described as the “St John the Baptist of the Eurosceptic movement” by the BBC – tells me that the mood among Brexiteer MPs was far from triumphalist. Didn’t you at least go and have a glass of champagne with Iain Duncan Smith, I asked? Apparently not.