Tesco Rawtenstall - Petrol Filling Station: 163.9p a litre, 5.0 miles away. 7.0p a litre cheaper: saves £3.85 a tank, and costs about £1.86 of fuel to get there and back. Worth the trip.
Gem Rawtenstall: 165.9p a litre, 4.6 miles away. 5.0p a litre cheaper: saves £2.75 a tank, and costs about £1.73 of fuel to get there and back. Worth the trip.
Rawtenstall: 167.9p a litre, 4.9 miles away. 3.0p a litre cheaper: saves £1.65 a tank, and costs about £1.87 of fuel to get there and back. Not worth the trip.
Mfg Accrington: 168.9p a litre, 0.4 miles away. 2.0p a litre cheaper: saves £1.10 a tank, and costs about 15p of fuel to get there and back. Worth the trip.
On a 55-litre tank at 40mpg. The distance is straight-line rather than by road, so a real trip is longer than the one costed here.