Explosion Near London

There has been a large explosion followed by several smaller blasts in the Hemel Hempstead area, around 25 miles north of London.

Sky Correspondent Sky Meade has said he can see flames about 200ft in the sky and there appears to be burning fuel.

The blast appears to be centered around the Bunsfield fuel depot near junction 8 of the M1. It was so powerful it was felt more than 20 miles away.
Sky News