Overview
- Average pump prices slipped by less than a penny in August to 134.64p for petrol and 142.2p for diesel, with a typical 55‑litre fill costing about £74.05.
- The RAC cites Competition and Markets Authority findings that margins remain far above historic levels and that competition in the retail market is weak.
- Supermarket reductions were minimal, with average unleaded down 0.23p to 131.26p and diesel down 0.3p to 138.81p over the month.
- Northern Ireland stands out as cheaper, averaging 127.9p for petrol and 134.5p for diesel, roughly 5p and 7p below the UK averages.
- Only a handful of forecourts undercut the market sharply, including petrol at 126.7p at MFG Morrisons in Leighton Buzzard and diesel at about 131–131.9p at BP on Newton Road in Bovey Tracey.