Diesel cost an average of 200.3p a litre across the 424 forecourts in London that were reporting diesel prices to the government’s Fuel Finder scheme on 22 October 2026, 1.5p above the UK average of 198.8p.
The cheapest diesel open to all drivers in London was 189.7p at Asda Beckton Superstore, E6 5JP. The dearest was 222.9p, charged at three forecourts including Welcome Break London Gateway, NW7 3HU, all motorway service areas. For a business buying fuel, that 33.2p difference is worth £332 on every 1,000 litres, or £18.26 on a 55 litre tank. Away from motorway services, the dearest was 205.9p at Pgg Harrow (Shell), HA0 3HF, 16.2p more than the cheapest.
Like for like, diesel prices at the 345 of those forecourts that reported on both 15 October and 22 October fell by an average of 0.2p a litre over the week. Among them, 48 raised their price, 82 cut it and the rest did not change.
Unleaded petrol (E10) averaged 174.6p across 424 forecourts, 1.2p above the UK average of 173.4p. It ranged from 165.9p at Sainsburys Enfield to 199.9p at Heston East Service Area (BP).
Supermarket forecourts were the cheaper place to fill up with diesel: they averaged 197.3p across 69 sites, against 200.9p at the other 355.
For fleets, 304 of the 424 forecourts selling diesel told Fuel Finder they sell fuel 24 hours a day, and 17 have AdBlue at the pump. None of them listed HVO renewable diesel.
How the figures were worked out
The figures come from Fuel Finder, the government scheme under which every UK forecourt must report its prices within 30 minutes of a change, published as open data under the Open Government Licence. British Fuel Prices records the feed several times a day. Averages cover the forecourts on its London page that reported a price in the 14 days to 22 October 2026; older prices are left out. London here means the London region, by postcode. The figures include 3 motorway service areas. Weekly changes compare the same forecourts’ prices at both dates. Prices are pump prices in pence per litre, including duty and VAT.
Every London forecourt with its latest prices and a map: British Fuel Prices London page.
British Fuel Prices is published by Domain Farm Limited, which also publishes London Business Daily.