What happens when a community is changed by immigration? Slough has gone from a majority white British town to a place where they are the minority. Ten years ago, Panorama's Richard Bilton reported on how Slough was struggling to cope with its migrant population. Now he's back. He finds a town with a booming economy and new families arriving every day. But there is a darker side. White British people are abandoning Slough, and some foreign workers say the dream is over.