Corbyn and Sultana launch 'new kind of political party'
Corbyn and Sultana launch 'new kind of political party'
www.yourparty.uk
Statement — Your Party

'Your Party' is either an interim name or just the working group name, not totally clear which. Anyway, thought it would be of interest.
EDIT: Yeah, it's not registered with the Electoral Commission, so it's not yet a political party, but it's run by the Peace and Justice Project, which is Corbyn's existing vehicle.