She has explained that she regards a 20p reduction as sufficient for biodiesel, but she is prepared to make a much larger reduction for road fuel gas, although the same arguments apply to both types of fuel. I will run through a few figures. Before the Budget, the biodiesel lobby was pushing for a duty incentive of about 35p per litre relative to ultra-low sulphur diesel. There is a significant difference between the figures. As the right hon.
Members can study it.
That is one of the points that hon. Members are not taking on board. Lady must compare like with like. A diesel engine cannot run on gas, so we have to compare ethanol with gas and normal diesel with biodiesel. Will the hon.