Roade Service Station: 173.9p a litre, 4.2 miles away. 25.0p a litre cheaper: saves £13.75 a tank, and costs about £1.66 of fuel to get there and back. Worth the trip.
Mfg Farcotton: 174.9p a litre, 2.3 miles away. 24.0p a litre cheaper: saves £13.20 a tank, and costs about 91p of fuel to get there and back. Worth the trip.
Asda The Oval Express Petrol: 175.9p a litre, 3.4 miles away. 23.0p a litre cheaper: saves £12.65 a tank, and costs about £1.35 of fuel to get there and back. Worth the trip.
Abington Avenue SF Connect: 176.9p a litre, 4.0 miles away. 22.0p a litre cheaper: saves £12.10 a tank, and costs about £1.60 of fuel to get there and back. Worth the trip.
Upton Way SF Connect: 178.9p a litre, 1.7 miles away. 20.0p a litre cheaper: saves £11.00 a tank, and costs about 69p 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.