The vans do not directly say they are policing the clean air zone, but have Transport for London markings as well as signs that they are carrying ANPR cameras.
Mr Giles added: "A lot of the Ulez cameras have been cut down in my ward in Kingston so we have seen a greater number of these vans around.
"While I don't agree with the Ulez expansion, I also don't agree with these 'blade runners' tearing the cameras down.