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Lindsay Duncan on Thatcher and treading the boards

18 March 2012 Last updated at 11:49 GMT

Actress Lindsay Duncan has had great success in the plays of Noel Coward and has just returned to London's West End in a sparkling revival of Hay Fever.

She spoke to the BBC's Andrew Marr about treading the boards, her new TV drama White Heat, and contrasting dramatic portrayals of Margaret Thatcher.

You can watch the Andrew Marr Show in full on the BBC iPlayer