Hertfordshire - Buncefield fuel depot

The Buncefield depot is a major distribution terminal operated by Total and part-owned by Texaco, storing oil, petrol as well as kerosene which supplies airports across the region, including Heathrow and Luton. It is the country's fifth largest fuel distribution depot. It is also used by BP, Shell and British Pipeline.

In total, 20 petrol tanks were involved, each said to hold three million gallons of fuel.