Proof that someone has really made it as a TV historian comes, I would suggest, when they join the likes of David Starkey and Simon Schama by getting their name into the programme’s title. So it is that Dominic Sandbrook’s The 70s, from 2012, has now been followed by The 80s with Dominic Sandbrook (BBC2, Thursday), a series that confirms his ability to put across moderately big ideas in a light easy style — and in a parka.