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Unite's Len McCluskey warns over Labour 'defeat' in 2015

1 April 2014 Last updated at 17:39 BST

The leader of Britain's biggest trade union has warned Ed Miliband that Unite could break its links with Labour if the party loses the next election.

Len McCluskey told a press gallery lunch at Westminster that Labour leader Ed Miliband had not yet presented a "coherent vision" to the electorate.

The BBC's James Landale explained more of what Mr McCluskey told reporters at Westminster.

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