Ignorance is no defence. The Guardian reports:
Boris Johnson has apologised for giving his wife a ‘backie’ on a bicycle, claiming he was unaware he was breaking the law.
The mayor of London was criticised by the national cycling charity CTC for pedalling his barrister wife Marina Wheeler through the city late on Thursday night on a bicycle designed for one person. The charity said he should have known better.
But Johnson’s official spokesman said the mayor was “unaware that he was apparently in contravention of the Road and Traffic Act”.