"We need to do all we can to address the long-term, complex root causes of violence as well as ensuring the police are providing an effective deterrent to those who carry knives and guns.
"We are in this together and we all need to take responsibility. That's why we are talking to the Government about bringing forward new measures that will help address the underlying causes of knife violence."
Hemet Home Secretary Jacqui Smith yesterday and said he had encouraged her to develop a Youth Crime Action Plan to be announced next week.
The Mayor has also argued for tougher sentences. His remarks echo Tory leader David Cameron who said last week that anybody caught with a blade without reasonable excuse should face jail. Chairman of the Metropolitan Police Authority Len Duvall said police and others were doing all they could.
Latest official statistics show fewer than one in five of those caught with a blade get a custodial sentence, despite the maximum penalty doubling to four years recently. Only a handful get more than a few months in jail.
Gordon Brown announced last month that anyone over 16 caught with a knife should be prosecuted, rather than escaping with a caution.