Momentum is a British left-wing political organisation which has been described as a grassroots movement supportive of the Labour Party; since January 2017, all Momentum members must be members of the
Momentum supporters at the Rally for Corbyn demonstration in Canterbury on 16 July 2016
16 July 2016 rally for Corbyn in Canterbury
At the February 2017 Stop Trump Rally in London
March 2017 Momentum activists' meeting in Birmingham
Zack Polanski is a British politician who has been the Leader of the Green Party of England and Wales since September 2025 and a member of the London Assembly since May 2021. He was the deputy leader
Polanski in 2022
Polanski with then party co-leader Carla Denyer in 2022
Polanski (left) with Ash Sarkar at EartH theatre in 2025