If people want to vote against Labour because they were againt the GC views of the candidate they would have voted Green or LibDem surely? The vote might alos be a protest agains the incumbant Labour mayor and his ULEZ squeeze on motorists too.
I think there will be Labour voters in that area as there are in all areas that would have either stayed home or voted otherwise because they are GC.
It was a big swing but I suspect mixed reasons. I think the area has quite a large Jewish community and maybe they feel safer with the Tories at the moment.