The EU referendum campaign at times seemed like a personal battle between David Cameron and Boris Johnson. Their rivalry has history. For Newsnight, Michael Cockerell looks at the relationship between the two men - and how it influenced the contest. (N.B. This aired on the programme on 22 June 2016)
27 Jun 2016
https://www.youtube.com/watch?v=Qq6ycnTgWNM