Newsnight - 03/09/2009

Susan Watts reports from Bletchley Park on growing calls for a posthumous apology to be made to code-cracker Alan Turing's family over his chemical castration, which followed his admission to having a relationship with a man. And on the eve of G20 finance ministers' talks in London, hosted by Alistair Darling, we ask if the deal struck in April is unravelling.