Fire crews kept their distance because of explosive gas cylinders
About 500 people have been asked to leave their homes in east London because of a huge fire on an industrial estate.
Fifty firefighters are at Argall Avenue, Leyton, where the fire has spread through factory units over an area the size of a football pitch.
They were called at 0340 BST and say there are still gas cylinders inside the warehouse which could explode.
Fire crews from across London were called to the scene.
On Sunday residents of two streets in Dagenham had to spend the night away from their homes because of another fire involving gas cylinders.
Homes were evacuated after an explosion in burning derelict buildings in Church Street .
Scotland Yard said roads have now re-opened and Dagenham CID is trying to find out how the fire started.
No-one was injured, but again there were fears a second cylinder could explode.