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Alwold Crescent, in Lee, just off the South Circular road was placed on lockdown after emergency services sped to the residential street amid concerns of a chemical reaction.

Paramedics rushed several people to hospital after witnesses said a number of locals suffered a bad reaction to an unknown substance on Sunday morning.

Taxi driver Ian Crouch, 39, told The Sun: "I could see the emergency services outside my house.

"When I spoke to a policeman he said there were people complaining of irritation, who had been throwing up all morning.