<sod >But a source close to the London Mayor said it would be âextraordinaryâ if Mr Khan did not address conference âafter the year London has had, with the  fire and two terror attacks, as well as critical local council elections next year.< eod>< sod > But a source close to the London Mayor said it would be âextraordinaryâ if Mr Khan did not address the conference âafter the year London has had, with the Grenfell fire and three terror attacks, as well as critical local council elections next yearâ.< eod>