This is the first Government ever to introduce comprehensive measures to tackle antisocial behaviour. There were none in 1997. The Crime and Disorder Act 1998 imposed duties on local authorities and police to tackle antisocial behaviour, and those duties have been steadily strengthened. The National Audit Office found that nine out of 10 perpetrators ceased their antisocial behaviour after three interventions, in which a range of measures to tackle antisocial behaviour can be used.