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Film director Christopher Nolan's latest $160m blockbuster Interstellar opens next week. Mark Coles examines the more humble beginnings of his film making career at University College London and asks how he has achieved the enviable knack of delivering huge box office takings and keeping the critics happy.Producer: Ben Carter.

Migration Watch UK's founder Sir Andrew Green is to become a member of the House of Lords. Presenter Jo Fidgen talks to Sir Andrew's old friends and colleagues in an attempt to find out what motivated this former ambassador to Syria and Saudi Arabia become one of the UK's most influential voices on immigration.Producer: Laura Gray.

Writer Richard Flanagan is the 2014 winner of the Man Booker Prize. His novel "The Narrow Road to the Deep North" is a story set among prisoners of war, forced by the Japanese to work on the Thai-Burma "death" railway. Presenter Becky Milligan looks into Flanagan's life in his native Tasmania where he is a prominent environmental campaigner and a regular at the local pub. She talks to Flanagan's close friends and relatives including his brother Martin Flanagan, leading film actress Kerry Fox and publisher Nikki Christer.Producer: Smita Patel.