Riveting and sumptuous: The Motive and the Cue, at the Lyttelton Theatre, reviewed

It’s official: subjecting oil and gas companies to a 78 pence tax rate (which is corporation tax plus the government’s windfall tax) doesn’t increase energy prices in the UK. That is what Ed Miliband told us on Sky News this morning, so it must be true. He will no doubt be hoping that we don’t