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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Today's top temperature will be 8 Celsius (46 F).
"Jessica passed away from serious injuries sustained in a motor vehicle accident on 26 December, 2017," a spokeswoman said:
Which? made just one energy company a "recommended provider" this year - the small supplier Octopus Energy.