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Lord Mandelson: Unions should embrace change

17 June 2012 Last updated at 12:00 BST

Lord Mandelson has warned against intolerance and divisiveness within the Labour Party, following attacks on Progress - the Labour organisation that aims to promote more progressive policies.

"The trade unions need to rethink and remake themselves for a new century", the former Labour cabinet minister told the BBC's Andrew Marr Show.

Watch The Andrew Marr Show in full on BBC iPlayer