The six-part drama, starring Hugh Bonneville, Jack Lowden, Dominic Cooper, Emun Elliott, Charlotte Spencer and Tom Cullen, also shows how the consequences lasted for decades. The crime had huge ramifications in London itself, not least on the Docklands development in the 1980s, and left controversy and murder in its wake.

Hugh Bonneville writes: “This opening episode of the 6-part BBC series was directed by Oscar winner Aniel Karia, with cinematography by Stuart Bentley, film makers with a great eye for mood and period detail. On set I remember a couple of the younger members of the cast being mesmerised by the rotary dial telephones and Rolodexes, which made me feel very old. I think the soundtrack on this production lifts it to another level.”

Our thanks to the BBC and the BFI National TV Archive for this screening.