Residents say they had reported a strong gas smell two weeks ago while others said engineers had been working on the street and digging holes in recent days.
Neighbours of a young girl killed in a suspected gas explosion say they want answers over what happened.
Police confirmed the body of a girl, believed to be aged four, was recovered from a building in Galpin's Road. Siobhain McDonagh, MP for Mitcham and Morden, told the BBC she had received a response from SGN after writing to the company.
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