Southall

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 and Tesco, tend to set the floor for prices here. Supermarkets account for 10 of the 77 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 Western Road, so you can check them against each other without leaving your usual route.

Average unleaded here tracks the wider Greater London figure closely. For diesel, expect an average of roughly 185p per litre locally.

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. Prices in Southall can move mid-week as well as at weekends, so the ordering above is worth a glance even if you always use the same forecourt.

The table below carries the exact live figures per station, and alerts can flag a drop at the forecourts you actually use.