"One of the undoubted highlights of the summer was the fantastic community spirited, magenta and pink clad Ambassadors, who gave up their time to welcome the world. I am delighted that we have delivered on our promise to build on the remarkable success of the volunteers during the Games with the expansion of the Ambassadors Programme.
"Armed with guides and information about the city, they are brilliantly placed to tempt visitors and Londoners alike with the smorgasbord of world class shops, theatres and restaurants that are on offer."
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The unlicensed events unfolded on Saturday night at Clapham Common and Tooting Bec Common.
A 37 year old man who was taken to hospital after getting into difficulty in a stretch of water near Maidenhead has died.
Jonty Bravery, who is mentally ill, has been jailed for 15 years after throwing a six year old boy from the Tate modern balcony.