I had not planned to write about what the Prime Minister buys for his missus, but having been hauled onto the radio waves to explain it all, clearly it is a matter for national debate.

Now, if I bought Mrs R a £1500 Micra, I’d be in the divorce courts before you could say ‘Nissan’. No offence to the harmless little runaround, but it doesn’t fit our aspirational lifestyle.

For the Camerons, though, it is bang-on politically correct: an affordable British-built hatchback that won’t break down. So for the first lady it is perfect, in a ‘we’re all in this together’ fashion. Sam Cam will love the blue hatch for popping to the shops and doing local commutes.

There has been criticism that the PM didn’t haggle and paid over the odds, but it’s a dealer car at dealer money and if it is rubbish he can take it back, along with the attorney general, if need be.