Shadow Secretary of State for Wales Peter Hain is among those at Tony Benn's funeral service.
On Twitter, he said the ceremony at Westminster Abbey will end with the 'The Red Flag' - a song long associated with the Labour Party and left-wing politics.
In St Margaret's Westminster Abbey looking at at Tony Benn funeral order of service. He would have approved: ends with Red Flag
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BBC Political Editor Nick Robinson has revealed Labour tried to recruit him to be Ed Miliband's spin doctor in the run-up to the election.