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Joan Bakewell: Frost was an immaculate networker

1 September 2013 Last updated at 16:08 BST

Veteran broadcaster Sir David Frost has died at the age of 74 after a suspected heart attack while on board a cruise ship.

Fellow broadcaster Joan Bakewell told the BBC she had followed Sir David's career with some awe.

She described him as hyperactive, with enormous energy and a great sense of curiosity about the world.