Momentum’s big worry is that it is failing to capitalise on its success

What now for Momentum? The grassroots organisation has had extraordinary success over the last few years, not least in shoring up Jeremy Corbyn’s position as Labour leader. The World Transformed, Momentum’s event down the road from the party’s main conference in Liverpool, is a testament to the group’s growing influence: in its three years of existence, it has morphed into a lively, well-organised festival.