UK Fuel Price Insights
Week of 18 May 2026
Average UK Unleaded This Week
159.4p
+0.8p vs last week
Key Facts
- £ Filling a 50-litre tank with unleaded costs £79.70 this week, £0.40 more than last week.
- D Average diesel is 186.5p (-1.0p vs last week).
- B Cheapest brand: GO at 150.4p. Most expensive: WELCOME BREAK at 173.8p.
- C Cheapest city: Aylesbury (146.0p). Most expensive: Newbury (164.9p).
Top 5 Cheapest Brands — Unleaded
1
GO
150.4p
0.0
2
COSTCO WHOLESALE
151.3p
+0.3
3
TESCO
153.5p
-1.2
4
Gulf Petrol Station
154.5p
+0.8
5
Maxol
154.6p
+0.4
Cheapest Cities
Most Expensive
Use This Data
This data is free to use with attribution. Please cite PumpCheck and link back to this page.
Source: PumpCheck (https://pumpcheck.co.uk/insights/weekly/2026-05-18)