Motorcycling groups such as National Motorcyclists Council have called on mayoral candidates to condemn motorcycle parking charges in a London borough
Both Labour and the Conservatives have blamed ULEZ for the former's loss in the Uxbridge by-election, in which the Conservatives maintained their seat.
The final statutory consultation on Hackney Council's proposed motorcycle parking charges has opened, and is taking responses until the beginning of August.
Criticism has been aimed at Hackney Council after a scrutiny panel was unable to achieve change over motorcycle parking charge plans in the London borough.