Weekly bulletin, 14 to 20 September 2026. Published Monday 21 September 2026.
Petrol prices in London: up 2.3p this week to 173.0p
Between Monday 14 September 2026 and Sunday 20 September 2026, the average price of unleaded across 138 filling stations in London rose 2.3p to 173.0p a litre, while diesel rose 3.0p to 196.4p.
Cheapest and most expensive
On Sunday 20 September 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.
Stations that joined or went silent this week
Stations that reported their first price during the week, and stations whose last price came before or during it and that have been silent for 7 days or more since.
Started reporting 1
- Craven Park Station, London, NW10 9PX, 16 Sep
Stopped reporting 0
None so far.
A station that stops reporting has not necessarily closed. The full lists: new stations and stations no longer reporting.
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The weekly change compares the same 135 filling stations with an unleaded price on both days, so a station dropping out of the figures does not move it.
138 of the 156 stations seen during the week changed at least one price.
The cheapest unleaded in London on Sunday 20 September 2026 was 162.7p at Asda Park Royal Superstore, London (NW10 7LW); the most expensive was 184.9p at Belsize Station Limited, London (NW3 4QE), a gap of 22.2p, or £11.10 on a 50-litre tank.
The cheapest diesel was 183.9p at Sainsburys Beckton, London (E6 6JF).
Across the UK, unleaded was up 2.3p over the same week, at 172.3p, which puts London 0.7p above the national average.
"Drivers in London paid 2.3p more for a litre of unleaded this week. On a 50-litre tank, that is £1.15 more than a week earlier. The gap between the cheapest and the dearest forecourt in London is 22.2p, 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 London: up 2.3p this week to 173.0p Between Monday 14 September 2026 and Sunday 20 September 2026, the average price of unleaded across 138 filling stations in London rose 2.3p to 173.0p a litre, while diesel rose 3.0p to 196.4p. The weekly change compares the same 135 filling stations with an unleaded price on both days, so a station dropping out of the figures does not move it. 138 of the 156 stations seen during the week changed at least one price. The cheapest unleaded in London on Sunday 20 September 2026 was 162.7p at Asda Park Royal Superstore, London (NW10 7LW); the most expensive was 184.9p at Belsize Station Limited, London (NW3 4QE), a gap of 22.2p, or £11.10 on a 50-litre tank. The cheapest diesel was 183.9p at Sainsburys Beckton, London (E6 6JF). Across the UK, unleaded was up 2.3p over the same week, at 172.3p, which puts London 0.7p above the national average. "Drivers in London paid 2.3p more for a litre of unleaded this week. On a 50-litre tank, that is £1.15 more than a week earlier. The gap between the cheapest and the dearest forecourt in London is 22.2p, 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 London, 14 to 20 September 2026. https://fuelpricetoday.co.uk/press/2026-W38/town-london Prices are pence per litre, computed from the government's Fuel Finder open data. Free to use with a link to the source.
Download the data
- Every station (CSV)
Name, brand, postcode, coordinates, unleaded and diesel on 14 Sep and 20 Sep.
- This bulletin (JSON)
All the figures on this page, with the 30-day series.
- The chart (PNG)
1200 by 630 pixels, white background.
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-W38/town-london 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 7 days at the filling stations of London, 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.