Cheapest Petrol Stations in London 2026: Complete Postcode Guide
We analysed 600+ London forecourts to reveal exactly where to find the cheapest petrol in every borough. Save up to 12p per litre by choosing the right postcode.
London's Petrol Price Problem
London drivers pay among the highest petrol prices in the UK. The capital's average forecourt price sits approximately 3–6p above the national average of 152.9p, driven by high property costs for station sites, congestion charge costs for fuel deliveries, and lower throughput at many inner-city stations. On the flip side, London has more forecourts per square mile than almost any other UK region, creating fierce local competition and some genuinely excellent deals for informed drivers.
We analysed over 600 London forecourts using FuelFinderLive data to identify the consistent low-price stations by area. The results show price variations of up to 18p per litre within the same borough — one of the highest intra-city spreads in the UK.
Cheapest Stations by London Area
Rather than listing specific stations whose prices change daily, the most useful guidance is to understand which types of sites and which parts of London consistently offer the best prices. The cheapest London petrol is almost always found at: supermarket forecourts in outer London retail parks, independent petrol stations on major A-roads in outer boroughs, and stations in zones 4–6 where property costs are lower. The most expensive petrol is reliably found at: central London filling stations (zones 1–2), motorway services on the M25 and M1, and small forecourts on constrained urban sites with no nearby competition.
North London Cheapest Stations
North London's best value petrol is consistently found along the A406 North Circular Road and at supermarket forecourts in areas like Brent Cross, Colney Hatch, and Edmonton. The Asda at Colindale and the Tesco at Edmonton Green are regularly among the cheapest in the region. Drivers in N1–N8 postcodes (Islington, Holloway, Finsbury Park) typically face the highest prices in the north due to constrained sites and high footfall. For these drivers, a brief trip to the outer North Circular delivers savings of 10–15p/litre.
South London Cheapest Stations
South London's most competitive petrol prices are found in outer boroughs along the A232 and A23 corridors. The Asda at Clapham, Morrisons at Lewisham, and supermarket sites around Croydon and Bromley consistently undercut inner south London stations by 8–12p/litre. Stations in SE1, SW1, and SW3 (Waterloo, Westminster, Chelsea) are among the most expensive in the entire country — avoid these for routine fills unless the convenience premium is worth it.
East & West London Stations
East London has benefited from significant new supermarket development, with Tesco, Asda, and Sainsbury's sites in Stratford, Beckton, and Barking providing competitive prices. The major out-of-town retail developments around Canary Wharf and Stratford (Olympics legacy) include affordable forecourts that serve both residents and commuters. West London's cheapest petrol is found along the A4 and A40 corridors in Ealing, Southall, and Hayes — well served by supermarket forecourts — while Kensington, Chelsea, and Chiswick high streets carry significant premiums.
London Supermarket Forecourts
| Area | Retailer | Approx. Price |
|---|---|---|
| Colindale (NW9) | Asda | 144–147p |
| Edmonton (N18) | Tesco Extra | 146–149p |
| Clapham (SW11) | Asda | 145–148p |
| Croydon (CR0) | Sainsbury's | 146–150p |
| Stratford (E15) | Tesco Extra | 147–150p |
| Beckton (E6) | Asda | 144–147p |
| Southall (UB1) | Morrisons | 145–148p |
Prices are indicative based on March 2026 data. Check FuelFinderLive for live prices before travelling.
London Driver Strategy
The optimal strategy for London drivers depends on your zone. If you live or work in zones 4–6, a supermarket forecourt is almost certainly within 1–2 miles of you and offers prices competitive with anywhere in the UK. Use FuelFinderLive to identify your nearest cheap station and make it your default. If you are in zones 1–3, fill up in the outer zones on your way home rather than at a local inner-London station — the savings of 8–15p/litre justify a minor route adjustment. If you drive predominantly within the Congestion Charge zone, consider whether an EV or PHEV makes financial sense given both the fuel costs and the daily £15 Congestion Charge for petrol vehicles.
Find the Cheapest Fuel Near You
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