In 2008, London lacked strong strategic leadership to tackle serious youth violence. Let's not forget, gang culture took root in London on my predecessor's watch. My Time for Action programme was the first proper Mayoral effort to tackle youth violence.

I stated then that the causes of serious youth violence are complex and deep-rooted so I brought together a wide range of parties to address issues in young offender institutions, the youth justice system, schools and communities. It is a long term problem.

Of course, there is always more that I would like to do. I am pleased the MPS Trident Gang Command has started and I want to see it expand. I want to see a London-wide anti violence strategy developed through the London Crime Reduction Board. And in future I want a greater focus for City Hall on Sentencing and Prisons.