Police, firefighters and ambulance staff are currently at the scene of John Lewis in Bluewater Shopping Centre which has been evacuated. It is believed the chemical spillage was from a fridge in the department store.
There are unconfirmed reports of injuries as a result of the leak.
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A 25-year-old man has been arrested for urinating on the Cenotaph in Whitehall and pulling down commemorative wreaths.
As many as 60 bands in beautiful costumes are taking part in the grand finale of the Notting Hill Carnival parade today.
Smoke was seen for miles around today after a Wetherspoon pub caught fire in south east London.