London fire LIVE: Huge 'explosion' in St John's Wood with smoke seen for miles

Huge plumes of smoke can be seen billowing for miles after a broke out at an electrical substation in . London Fire Brigade said 15 fire engines and around 100 firefighters have been called to the blaze at an electrical substation in Victoria Passage.

A spokesperson said: "Crews are on scene extinguishing the fire. There is a considerable amount of smoke which is making it a very visible fire. The Brigade's 999 Control officers have received around 40 calls alerting them to the blaze.

"The Brigade was called at 5.29am and is still on scene. Fire crews from Paddington and Euston fire stations are in attendance. The cause of the fire is not known at this stage. "

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