Mfg Bush Hill: 167.9p a litre, 4.8 miles away. 5.0p a litre cheaper: saves £2.75 a tank, and costs about £1.83 of fuel to get there and back. Worth the trip.
EG Enfield Bush Hill Pfs: 169.9p a litre, 4.8 miles away. 3.0p a litre cheaper: saves £1.65 a tank, and costs about £1.85 of fuel to get there and back. Not worth the trip.
Mfg Cheshunt: 171.9p a litre, 0.4 miles away. 1.0p a litre cheaper: saves 55p a tank, and costs about 15p of fuel to get there and back. Worth the trip.
Lavender Hill Garage Enfield Ltd: 171.9p a litre, 4.2 miles away. 1.0p a litre cheaper: saves 55p a tank, and costs about £1.64 of fuel to get there and back. Not worth the trip.
Highway SF Connect: 171.9p a litre, 4.3 miles away. 1.0p a litre cheaper: saves 55p a tank, and costs about £1.68 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.