Shell Sedgemoor South, BS26 2UF. A motorway service area, where you have no choice.
What it is charging
Unleaded: 197.9p a litre, 26.2p over the national average, filed Wednesday 28 October
Diesel: 219.9p a litre, 21.2p over the national average, filed Friday 30 October
Unleaded within 5 miles
Global Fuel - Shuteshelve: 167.9p a litre, 4.6 miles away. 30.0p a litre cheaper: saves £16.50 a tank, and costs about £1.75 of fuel to get there and back. Worth the trip.
G H Lunn & Sons Ltd: 169.9p a litre, 3.3 miles away. 28.0p a litre cheaper: saves £15.40 a tank, and costs about £1.27 of fuel to get there and back. Worth the trip.
Asda Highbridge Superstore: 171.7p a litre, 3.9 miles away. 26.2p a litre cheaper: saves £14.41 a tank, and costs about £1.52 of fuel to get there and back. Worth the trip.
Meadgate: 171.9p a litre, 1.8 miles away. 26.0p a litre cheaper: saves £14.30 a tank, and costs about 70p of fuel to get there and back. Worth the trip.
Buncombes Garage: 172.9p a litre, 4.2 miles away. 25.0p a litre cheaper: saves £13.75 a tank, and costs about £1.65 of fuel to get there and back. Worth the trip.
Asda Locking Express Petrol: 174.9p a litre, 4.9 miles away. 23.0p a litre cheaper: saves £12.65 a tank, and costs about £1.94 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.