Weekly bulletin, 19 to 25 October 2026. Published Monday 26 October 2026.
Petrol prices in the South West London postcode area (SW): down 0.9p this week to 175.1p
Between Monday 19 October 2026 and Sunday 25 October 2026, the average price of unleaded across 40 filling stations in the South West London postcode area (SW) fell 0.9p to 175.1p a litre, while diesel fell 0.2p to 201.0p.
Cheapest and most expensive
On Sunday 25 October 2026, prices updated within 30 days, judged against their neighbours.
The last 30 days
Daily averages, in pence per litre. Right-click the image to save it; it is free to publish with a link.
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The weekly change compares the same 39 filling stations with an unleaded price on both days, so a station dropping out of the figures does not move it.
18 of the 41 stations seen during the week changed at least one price.
The cheapest unleaded in the South West London postcode area (SW) on Sunday 25 October 2026 was 170.9p at Sainsburys Merton, London (SW19 1DD); the most expensive was 179.9p at Shell Balham, London (SW12 9DP), a gap of 9.0p, or £4.50 on a 50-litre tank.
The cheapest diesel was 196.9p at Barnes Express, London (SW13 9EW).
Across the UK, unleaded was down 0.7p over the same week, at 173.0p, which puts the South West London postcode area (SW) 2.1p above the national average.
"Drivers in the South West London postcode area (SW) paid 0.9p less for a litre of unleaded this week. On a 50-litre tank, that is £0.45 less than a week earlier. The gap between the cheapest and the dearest forecourt in the South West London postcode area (SW) is 9.0p, so where you fill up still matters more than when." said Jacky A., editor of fuelpricetoday.co.uk.
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Petrol prices in the South West London postcode area (SW): down 0.9p this week to 175.1p Between Monday 19 October 2026 and Sunday 25 October 2026, the average price of unleaded across 40 filling stations in the South West London postcode area (SW) fell 0.9p to 175.1p a litre, while diesel fell 0.2p to 201.0p. The weekly change compares the same 39 filling stations with an unleaded price on both days, so a station dropping out of the figures does not move it. 18 of the 41 stations seen during the week changed at least one price. The cheapest unleaded in the South West London postcode area (SW) on Sunday 25 October 2026 was 170.9p at Sainsburys Merton, London (SW19 1DD); the most expensive was 179.9p at Shell Balham, London (SW12 9DP), a gap of 9.0p, or £4.50 on a 50-litre tank. The cheapest diesel was 196.9p at Barnes Express, London (SW13 9EW). Across the UK, unleaded was down 0.7p over the same week, at 173.0p, which puts the South West London postcode area (SW) 2.1p above the national average. "Drivers in the South West London postcode area (SW) paid 0.9p less for a litre of unleaded this week. On a 50-litre tank, that is £0.45 less than a week earlier. The gap between the cheapest and the dearest forecourt in the South West London postcode area (SW) is 9.0p, so where you fill up still matters more than when." said Jacky A., editor of fuelpricetoday.co.uk. Source: fuelpricetoday.co.uk, weekly bulletin for the South West London postcode area (SW), 19 to 25 October 2026. https://fuelpricetoday.co.uk/press/2026-W43/area-sw Prices are pence per litre, computed from the government's Fuel Finder open data. Free to use with a link to the source.
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- Every station (CSV)
Name, brand, postcode, coordinates, unleaded and diesel on 19 Oct and 25 Oct.
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All the figures on this page, with the 30-day series.
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Terms of use
Free to use, quote and publish, including the chart and the data, with a link to https://fuelpricetoday.co.uk/press/2026-W43/area-sw or a credit to fuelpricetoday.co.uk. Prices are computed from the Fuel Finder open data published by the Department for Energy Security and Net Zero under the Open Government Licence v3.0. Questions, a figure for another area, or a quote: contact@fuelpricetoday.co.uk.
How the figures are computed
Each average is the mean of the prices changed in the last 30 days at the filling stations of the South West London postcode area (SW), motorway services left out and prices more than 25p from the day's median discarded. The cheapest and most expensive stations are judged against the stations within 10 km, so that a typing error cannot top the list. The week runs from Monday to Sunday. Details on how this site works.