History is all around us, not least on television. And that accessibility has shown that it’s far from the preserve of academics. It’s ours to cherish.

A few weeks ago, I found myself in the back of a taxi on the Uxbridge Road in London, looking for a theatre called Bush Hall. Music aficionados might recognise it as one of London’s most important music venues – many a household name have started out here – but I wasn’t going for the rock’n’roll. I was heading to a unique gathering to celebrate 20 years of television history, and the end of one of the most influential and ambitious historical series ever made.