It’s a trope in British politics that the real division is not between left and right but between roundhead and cavalier. It’s a useful way to think about things. The British tend to prefer a bit of the cavalier in their Prime Ministers. The cavaliers do well until they forget that the British also expect at least a roundheadish front when the times call for it.

Like Charles I though, Johnson believes in the divine right of toffs and seems likely to end up with his Government decapitated.