Harrow

At the bottom of the local market, unleaded starts around 154p per litre right now. A few outlying forecourts price well above the typical local level, so the average is a better guide here than the extremes.

The supermarket sites, including Asda, tend to set the floor for prices here. Supermarkets account for 5 of the 59 stations here, with branded and independent sites making up the remainder.

The low end of the market has recently been held by Sainsburys. Several of the busier sites sit along Old Dairy Lane and Forty Lane, so you can check them against each other without leaving your usual route.

Average unleaded here tracks the wider Greater London figure closely. Diesel averages around 185p per litre across the stations listed for Harrow.

The comparison covers stations up to roughly 8 km out, which keeps out-of-town supermarkets and bypass sites in the same view as the town centre. The cheapest station in Harrow is not fixed; the low spot moves between forecourts through the week, so the current ordering matters more than habit.

Use the live table for the exact prices at each site, or set an alert if you would rather be told when your usual stations drop.