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Andrew Marr: Frost 'changed British broadcasting'

1 September 2013 Last updated at 15:40 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 Andrew Marr succeeded Sir David on the BBC Sunday morning show and said they were huge shoes to step into.

Marr said anyone who thought he was a soft interviewer wasn't listening.