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The Day the Immigrants Left 9pm, BBC1 Of all the idiocies spouted about immigration, none is more foolish than the simple opposing of numbers of immigrants against numbers of unemployed locals. This doc, presented by Evan Davis, confronts this fallacy by taking Wisbech, Cambridgeshire, where 9,000 immigrants have settled and worked since 2004, and where 2,000 natives claim benefits. The show contrives to temporarily remove the incomers and give their jobs in restaurants, farms and building sites to the locals: are there reasons they didn't have them in the first place? Ramsay's Kitchen Nightmares USA 9pm, Channel 4 RKN is as tightly plotted as a three-act Hollywood thriller – just sit back and go along for the ride – though Ramsay himself is as predictable and menacing as a pantomime villain. The main interest is in the basket-case businesses and the people who run them – this week's proprietor, Paul Bazzini, is probably in need of a psychiatrist as much as a chef. He sounds thoroughly depressed about his faltering New Jersey restaurant. One wonders if Gordon is the man to cheer him up? Mad Men 10pm, BBC4 The British are coming! Sterling Cooper's British bosses come over to see how their investment is doing and, in typical Mad Men style, it's hard to see their real intentions. They schedule the visit for a public holiday, meaning everyone has to come in, and they completely "forget" to include Roger in their business plan. It's also Joan's last day. Do they care nothing for Sterling Cooper or are they just deliberately messing with everyone's heads? Or both? Nothing happens as expected, particularly the rather spectacular bit of karmic payback the Brits suffer. Damages 10.45pm, BBC1 After a patchy series two, the legal drama returns. As before, there's a tricksiness about the time-switch structure, but any initial confusion soon gives way as we catch up again with steely Patty (Glenn Close), whose latest case revolves around a $70bn Ponzi scheme, and the world's most doe-eyed lawyer, Ellen Parsons (Rose Byrne), now an assistant DA. For reasons as yet unclear, and you probably could have guessed this, it seems the duo's lives will again become intertwined.