Colney Hatch Extra - Petrol Filling Station: 167.9p a litre, 0.8 miles away. 7.0p a litre cheaper: saves £3.85 a tank, and costs about 30p of fuel to get there and back. Worth the trip.
Mfg Southgate: 167.9p a litre, 1.6 miles away. 7.0p a litre cheaper: saves £3.85 a tank, and costs about 61p of fuel to get there and back. Worth the trip.
Tgc - Barnet: 167.9p a litre, 1.6 miles away. 7.0p a litre cheaper: saves £3.85 a tank, and costs about 61p of fuel to get there and back. Worth the trip.
Mfg Whetstone: 167.9p a litre, 2.0 miles away. 7.0p a litre cheaper: saves £3.85 a tank, and costs about 76p of fuel to get there and back. Worth the trip.
Winchmore Hill Esso Express: 167.9p a litre, 2.4 miles away. 7.0p a litre cheaper: saves £3.85 a tank, and costs about 91p 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.