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Early life 
Cook's father, William Thomas, worked for the Commission on Industrial Relations (later ACAS). She has two younger brothers and lived on Burnham Avenue in Ickenham. She attended Glebe Primary School then passed her eleven-plus enabling her to attend the newly opened Vyners Grammar School (now called Vyners School) also in Ickenham, on Warren Road. She gained ten O-levels and three A-levels and went on to Leicester University to gain an honours degree in psychology.
Cook's career began as a producer, presenter and DJ for London's Capital Radio before moving to the BBC where, over the next twenty years, she presented programmes for both radio and television, notably the BBC's Nationwide, Breakfast Time, Children in Need, Out of Court and Crimewatch. Other BBC TV presenting credits include Pebble Mill At One, Daytime Live, Omnibus At The Proms, Having A Baby, Out Of This World and The Children's Royal Variety Performance. She was a regular guest on Call My Bluff and one of Holiday's team of reporters. For Channel 4 she hosted the popular afternoon show Collectors Lot. She also appeared briefly as herself in the BBC television drama serial Edge of Darkness (1985) and in The Life and Loves of a She-Devil (1986).
Cook and Alan Partridge 
Cook was famously often referred to in the first series of I'm Alan Partridge, although she only ever "appeared" on the other end of a telephone and personally did not take part in the show. For effect she was portrayed as a foul-mouthed heavy smoker, in contrast to her good-natured screen persona. In To Kill A Mocking Alan, the fifth episode of the first series, Cook pulls out at the last minute from a planned guest spot on Partridge's live show, An Afternoon With Alan Partridge, which has the twin effects of seriously rattling Partridge's nerves and causing two of his audience to walk out before the show begins. She is also extensively referred to in Partridge's second autobiography (the first to be actually published), I Partridge: We Need to Talk about Alan. In its pages the fictional Cook's love of smoking is referred to again, along with abiding passions for betting on horseraces, heavy drinking and voicing her hatred for other TV personalities. Partridge reveals that he finds Cook extraordinarily attractive, once going so far as to make a drunken pass at her. The attempted seduction was rebuffed emphatically.
Cook's first two novels, On Dangerous Ground (2006) and Force of Nature (2009), are published by Hodder Headline. She devised and presents a supportive series for writers, The Write Lines, for BBC Oxford.
Cook is executive producer for Tracker starring Ray Winstone and released in the UK in April 2011. She also script edited the movie. She is adapting her first novel, On Dangerous Ground, for the screen.
Personal life 
Cook has been married three times. She lives in Oxfordshire with her third husband, the film director Ian Sharp. She has two children, Charlie Williams, son to former husband John Williams, the classical guitarist, and Megan Macqueen, daughter to children's television and GMTV producer Billy Macqueen with whom she lived for fifteen years. Her first marriage was in 1971 to the musician Brian Cook, whom she met at Leicester University.
- Johnston, Jenny (2011) ""Since leaving Crimewatch, Sue Cook has written books and produced films but she says nothing can beat the buzz of live television", Daily Mail, 29 April 2011, retrieved 2011-07-06
|Co-host of Crimewatch
with Nick Ross