Firefighters were called to a suspected chemical leak at the Boleyn Tavern in Upton Park this afternoon.

A London Fire Brigade spokesman said that crews were called out to reports of a smell from the basement of the Barking Road pub at 4.08pm.

They did not find any elevated readings and the incident was over by 5.03pm.

Two women and a man were given a precautionary assessment by the London Ambulance Service at the scene but required no further treatment.

Eyewitnesses reported seeing a number of vehicles at the scene, which the spokesman said was due to the nature of the incident and the requirement for specialist equipment.

The pub, which is a Grade II listed building, is a matchday favourite for many West Ham United fans.

In a statement on the Recorder’s Facebook page, a spokesman from the Boleyn Tavern said that the smell, detected in the morning, was “likely to have originated or been generated from a source outside of the premises.”

The statement went on to say that the decision to close the pub was for “the wellbeing and safety of our customers and staff whilst precautionary measures were taken” and thanked “all those who showed concern,” assuring visitors it would be “business as usual” on Thursday.