Rory Bremner says it’s hard to do impressions of modern politicians as so few have distinctive characters. This is one of the many excellent reasons why the Prime Minister must promote Jacob Rees-Mogg. Fruitily well-spoken and spotlessly courteous (he claims never to have sworn), the waistcoat-wearing MP for North East Somerset appears to have tumbled out of a PG Wodehouse story and now stands marooned in the 21st century, wondering how to get back. This week he was the star of a Commons debate on royal succession. “Of course I’ll give way!” he would hoot graciously at fellow MPs, as if he could think of no greater honour than being interrupted by them. His one concession to modernity is that he wears glasses. I’m sure he’d feel more at home in a monocle.