Overall levels of youth crime are down by 12 per cent over the same period, and violent crime is at its lowest level in more than 30 years.Those successes have been achieved through a combination of tough enforcement, supported by record numbers of police officers, and innovative early intervention initiatives such as our groundbreaking no knives, better lives campaign, which has led to a 35 per cent reduction in knife carrying in Inverclyde over the period of the campaign.