About 30 residents have been evacuated and part of a building has been destroyed following a suspected explosion.
London Fire Brigade (LFB) said it was called to a fire after the suspected blast on High Street in Hampton Hill, south-west London, on Tuesday night.
Road closures remain in place at the scene, Richmond Council said.
Workers at the site believe a "fault in a nearby electricity box" sparked an explosion. LFB has not confirmed the cause.
Scenes from around 9am today... the morning after the night before of the #HamptonHill explosion. It was terrifying! All neighbours safe and well but pavement and roof/wall behind estate agent obliterated by pressure of blast. @DavidSamFrancis #news #blogger #journalist pic.twitter.com/fIsnWogCkF— THE JOURNO MUM (@the_journo_mum) September 18, 2019
Local resident Victoria Rowland-Moore said it felt like a "sonic boom".
"It blew up the pavement from underneath, causing an extension on the local estate agent's building to fall down," she said.