People were evacuated from their homes in Wembley after a lorry carrying circus equipment went up in flames on Wednesday (May 25) morning.
About 30 residents were evacuated from homes close to the A406 North Circular Road after the fire broke out shortly before 2am, as London Fire Brigade (LFB) said the vehicle contained potentially explosive gas cylinders.
One woman tweeted that she had heard two explosions at around 2.40am and had taken the photo below from her bedroom window as the "very rampant fire" sent smoke billowing.
The fire caused traffic chaos, with the road initially closed eastbound between Harrow Road and Brentfield Road.
Transport for London (TfL) said at 9am that two out of three eastbound lanes remained closed at Harrow Road.
A spokesman for the FLB said it was called at 1.55am and the fire was under control by 4am.
He said the lorry was gutted and a caravan and two cars were also damaged, but no one had been injured.
He added that about 30 residents had been evacuated as a safety precaution due to the presence of gas cylinders.