London mayor’s office says he is ‘victim of a scam’ after conviction under fast-track system where magistrates can decide outcomes in secondsUK politics live – latest updatesSadiq Khan’s office has revealed he was the victim of a scam that led to him being fined for failing to tax a car that did not belong to him.The London mayor was found guilty last month under a system of “conveyor-belt justice”, in which magistrates decide on hundreds of cases a day, sometimes spending less tha