[holding answer 6 February 2007]: Definitive figures on the acreage of biofuels grown in England are not available. However some information on the area of oilseed rape grown for use in biofuel production is available from the Energy Aid Scheme which started in 2004. In England there were 32,237 hectares of oilseed rape grown in 2004 and in 2005 this had increased to 92,727 hectares.
These figures may not capture all oilseed rape grown for biofuel production; only that declared under this particular scheme. Oilseed rape grown on other land and which may have been used for biofuel production is not known because there is no way of identifying the end use of the crop. From 1 April 2008, the Renewable Transport Fuel Obligation (RTFO) will require a declaration of sustainability to help identify sources of biofuels.