Four people have been taken to hospital following a “chemical incident” in south-west London.
Staff fled the offices of Barclay’s Bank on Wimbledon Hill Road, Merton, after noticing a “chemical smell” on Wednesday morning.
A Hazardous Area Response Team was sent to the scene at 12.31 BST. Three men and a woman were taken to hospital.
The cause of the smell is thought to be the fumigation of a building which had taken place overnight, fire crews said.
Firefighters carried out a sweep of the property but found no elevated readings.
Police said the incident was not being treated as suspicious and London Fire Brigade said it was over by 14.22.