Compare BP petrol and diesel prices across forecourts in and around Merthyr Tydfil, South Glamorgan. Cheapest unleaded from 175.9p, diesel from 198.9p. Updated today, 23 October 2026.
| Forecourt | Unleaded | Diesel | Distance |
|---|---|---|---|
| MIDGLANMORGAN NEW CARDIFF ROAD |
175.9p | 198.9p | 4.5 mi |