Evidence first. Then build the economics.

UK CPI inflation was 2.8% in May 2026, unchanged from April but lower than March. This example is useful because it can support two different arguments: lower inflation may improve real incomes and confidence, but it may also signal weaker demand depending on the cause.

Mechanism

Lower inflation → slower rise in living costs → possible improvement in real incomes → stronger consumer confidence → higher consumption → AD may rise

Evaluation

The impact depends on why inflation is lower. If inflation falls because supply conditions improve, growth may be supported. If it falls because demand is weak, growth may slow.

Oil price volatility is useful for A-Level Economics because oil affects transport, production and energy costs across the economy. If oil prices rise or remain elevated, firms may face higher costs, creating cost-push inflation and reducing short-run aggregate supply.

Mechanism

Higher or volatile oil prices → higher transport and production costs → firms face rising costs → SRAS may shift left → price level rises and real output falls

Evaluation

The impact depends on whether oil prices remain high, how energy-intensive firms are, and whether businesses absorb costs or pass them on to consumers.