Unleaded: 169.9p a litre, 1.8p under the national average, filed Saturday 31 October
Diesel: 201.9p a litre, 3.2p over the national average, filed Wednesday 21 October
Unleaded within 5 miles
Asda Park Royal Superstore: 167.7p a litre, 4.0 miles away. 2.2p a litre cheaper: saves £1.21 a tank, and costs about £1.52 of fuel to get there and back. Not worth the trip.
Mfg Morrisons Queensbury: 167.9p a litre, 0.5 miles away. 2.0p a litre cheaper: saves £1.10 a tank, and costs about 19p of fuel to get there and back. Worth the trip.
Mfg Southall: 167.9p a litre, 3.2 miles away. 2.0p a litre cheaper: saves £1.10 a tank, and costs about £1.22 of fuel to get there and back. Not worth the trip.
Sainsburys Alperton: 167.9p a litre, 3.3 miles away. 2.0p a litre cheaper: saves £1.10 a tank, and costs about £1.25 of fuel to get there and back. Not worth the trip.
Asda Colindale Superstore: 168.7p a litre, 1.1 miles away. 1.2p a litre cheaper: saves 66p a tank, and costs about 42p of fuel to get there and back. Worth the trip.
Asda Alperton Express Petrol: 168.9p a litre, 3.5 miles away. 1.0p a litre cheaper: saves 55p a tank, and costs about £1.34 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.