David Cameron describes the economic downturn as " no normal recession" UK Prime Minister David Cameron to party conference, 5th October 2011.

This is the fourth post in the series following the oil price, markets and general health of the global economy examining the simple theory that OECD recession may result from annual average oil price exceeding $100 bbl.

The annual average price (AAP) of Brent went through $100 on around 16th August 2011 and the