If we were to put together a 'Top 10 London documentaries you have to watch' (and we no doubt will), The London Nobody Knows would be a shoe-in. It's easy to sum up: a slightly dishevelled James Mason walks around a slightly dishevelled 1960s London in search of disappearing (and now disappeared) ways of life. You will remember every scene.
The Museum of London Docklands will screen this minor masterpiece on 12 August, followed by an interview with the documentary's script-writer Brian Comport. Those who've seen it can ask about that egg-breaking factory. Those who haven't can enjoy the visit to the Ripper house and the goldfish-filled cistern for the first time.