New Government data shows a surge in demand for road fuels. Diesel sales were up by 7.9% in the month to 14 March, compared with the same period last year, and petrol sales increased by 5.6%, despite a long-term trend of decline, and overall sales of both fuels, including commercial, were up by 7.0%.

PRA chairman Brian Madderson said: "Latest Government data suggests that increased economic activity and cheaper prices had a significant impact on the demand for fuel in the month to 14 March. However, much of this increase will have been taken by the big four supermarkets."