Ofsted's Wilshaw on how a school can become top-class

A comparison between schools in London, some of them in under-privileged areas where many children do not speak English as a first language, with schools outside London, which are predominantly white British, shows something remarkable - the London schools are performing better, often much better.

So is there a London effect and how could it help schools up and down the country?

Sir Michael Wilshaw, Chief Inspector of Schools in England, outlined to Newsnight the reasons for the improvement in standards in London.