UK fuel prices on 18 September 2026
Daily report for 18 September 2026. National averages, regional gaps and the biggest price moves from official UK Government Fuel Finder data.
Summary
UK pump prices were rising on 18 September 2026. The average litre of petrol (E10) cost 171.9p, up 0.2p on the day and up 3.2p on the week, while diesel averaged 195.6p (up 0.6p on the day, up 4.9p on the week). Diesel is 23.8p dearer than petrol. Northern Ireland was the cheapest region for petrol at 166.3p and South East the dearest at 173.5p, a gap of 7.2p a litre. Across the country 673 forecourt prices were cut and 3,860 went up compared with the day before.
Petrol E10: cheapest and dearest regions
| Region | Average |
|---|---|
| 🟢 Northern Ireland | 166.3p |
| Yorkshire & Humber | 170.4p |
| North East | 170.9p |
| Wales | 171.3p |
| North West | 171.4p |
| East Midlands | 171.8p |
| South West | 172.3p |
| West Midlands | 172.4p |
| East of England | 172.5p |
| Scotland | 173.1p |
| London | 173.1p |
| 🔴 South East | 173.5p |
Diesel: cheapest and dearest regions
| Region | Average |
|---|---|
| 🟢 Northern Ireland | 190.6p |
| Yorkshire & Humber | 194.9p |
| Wales | 195.2p |
| North West | 195.3p |
| East Midlands | 195.3p |
| North East | 195.5p |
| West Midlands | 195.9p |
| East of England | 195.9p |
| South West | 196.1p |
| South East | 196.9p |
| Scotland | 197.0p |
| 🔴 London | 197.1p |
Biggest petrol price drops
367 petrol prices cut in total
Biggest petrol price rises
1,410 petrol prices raised in total
Biggest diesel price drops
306 diesel prices cut in total
Biggest diesel price rises
2,450 diesel prices raised in total
Averages are trimmed means of forecourt prices at the last official snapshot of each UTC day. Implausible prices (more than 18p below or 45p above the regional median, likely entry errors) are excluded. Methodology.