"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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Monday's temperature was recorded at Kew Gardens, west London, where visitors enjoyed temperatures 10 degrees warmer than Milan at 8C.
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Rebecca Steinfeld and Charles Keidan want to secure legal recognition of their seven-year relationship.