After a Trip episode about the meaning of mainstream, this time the gang go deeper into ‘Mainstream’ – that is, the new soft-left faction inside Labour. Yes, a festive episode about the inner workings of a political party! Don’t say we don’t spoil you.

Jem, Nadia and Keir explain the emergence of Mainstream’s ‘radical realists’ – who include Andy Burnham and Clive Lewis – by exploring the lesser-known history of political tendencies that have shaped and split the Labour Party since the second world war.

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