The Mayor's Senior Advisor for Volunteering, Charities and Sponsorship, Veronica Wadley, said:
"2012 has been an extraordinary year for London and the achievement of hosting the Games has shown what a terrific welcome we can give visitors. With the help of the Team London Ambassadors and other volunteering programmes, we want to build on the city's reputation for being able to deliver the most fantastic place in the world to visit."
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Police have issued a statement confirming that a 17-year-old boy was arrested following the violent protest in Dalston on Friday night.
Police are offering a reward of £20,000 for anyone who comes forward with video footage of a fatal stabbing in Peckham earlier this year.
Rahad Hussain, 23, has been charged over an acid attack in east London which left two people with "life-changing" injuries.