Momentum considers accepting members from outside the Labour party

Plan is intended to catch those who left the party under Keir Starmer and create a broader leftwing movement before election

Momentum is considering opening up its membership to people outside the Labour party in an attempt to energise a broader leftwing movement in the lead-up to the general election.

Insiders say a shift in the group’s membership model will make it a “powerful force” and will ensure its financial sustainability and relevance if Keir Starmer becomes prime minister.