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.
Asda Burnley Superstore: 168.7p a litre, 4.1 miles away. 2.2p a litre cheaper: saves £1.21 a tank, and costs about £1.57 of fuel to get there and back. Not worth the trip.
Mfg Accrington: 168.9p a litre, 1.6 miles away. 2.0p a litre cheaper: saves £1.10 a tank, and costs about 61p of fuel to get there and back. Worth the trip.
Asda Accrington Superstore: 169.9p a litre, 1.7 miles away. 1.0p a litre cheaper: saves 55p a tank, and costs about 65p of fuel to get there and back. Not worth the trip.
Rossendale Road Service Station: 169.9p a litre, 2.6 miles away. 1.0p a litre cheaper: saves 55p a tank, and costs about £1.00 of fuel to get there and back. Not 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.