Buncefield oil depot is operated by Hertfordshire Oil Storage Ltd ( HOSL ) and officially known as the Hertfordshire Oil Storage Terminal . It is an oil depot located on the edge of Hemel Hempstead to the north of London in the United Kingdom ( UK ) . In December 2005 there was a series of explosions on the site which caused the largest fire in Europe since World War II
series of explosions on the site
Buncefield fire
Buncefield oil depot