Petrol and diesel prices at P Doherty Fuel Oils Ltd TA Riverside Service Station

P Doherty Fuel Oils Ltd TA Riverside Service Station, BT817AY.

What it is charging

• Unleaded: 179.0p a litre, 7.3p over the national average, filed Wednesday 21 October
• Diesel: 199.9p a litre, 1.2p over the national average, filed Wednesday 21 October

Unleaded within 5 miles

• Hamiltons Foodhalls Ltd: 161.9p a litre, next door away. 17.1p a litre cheaper: saves £9.40 a tank, and costs about 3p 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.