Unite was once the biggest trade union in Britain, and the largest funder of the Labour Party. In the past its reputation has come under scrutiny. Four years after its first female leader was elected on a promise of restoring trust… it remains mired by in-fighting.

Reporter: Jon Ungoed-Thomas

Producer: Jonathan Lewis

Sound design: Dominic Delargy

Art work: Lola Williams

Editor: Jasper Corbett

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