27 July 2021
In Camden and Barnet consituency, Green Party candidate Kirsten de Keyser won 12.4% of the votes, depite the constituency being strongly split between Labour Camden and Conservative Barnet. Across London the campaigning of local parties contributed to an enhanced share of the vote, meaning that three List members were elected to the Assembly for the Green Party. The two serving members Sian Berry and Caroline Russell were joined by Zack Polanski.
In the mayoral election, Sian won the clear third place with 7.8% of the vote, establishing the Greens as the third party in London.