FUEL duty increases levied in the March Budget are now transforming into price rises at the pumps, according to the latest PHH AllStar monthly fuel report. Chancellor of the Exchequer Gordon Brown announced a 4.4p a litre/20p a gallon rise in unleaded petrol and ultra-low sulphur diesel, a 4.9p a litre/22.3p a gallon rise in unleaded petrol and a 5.5p a litre/25p a gallon rise in ordinary diesel in the Budget.

Fuel prices rises were buffered initially as the actual price of fuel continued to drop due to a strong pound and cheap crude oil. But now, prices are rising with the monthly report suggesting an average 3p a litre/13.69p a gallon rise across all fuel grades compared with March. Keith Greenhead, divisional general manager - fuel at PHH Vehicle Management Services, said he expected fuel prices to continue to rise.

Cheapest and most expensive pump prices in Britain are: Diesel - lowest, Stoke-on-Trent 63.60p a litre/289.12p a gallon; highest, Dover 69.48p/315.85p; national average, 66.95p/304.35p. Unleaded - lowest, Stoke-on-Trent 63.31p/ 287.8p; highest, Dover 69.12p/314.21p; national average, 66.1p/300.49p.

Four-star - lowest, Swansea 69.24p/314.76p; highest, Aberystwyth 75.66p/343.95; national average, 72.17p/328.08p.