Brent crude rises above $100 a barrel as US-Iran tensions threaten oil supply

Oil prices have risen above $100 a barrel for the first time since July due to escalating tensions between the US and Iran and Houthi attacks on Saudi cities, threatening global supply disruptions.

UK · 2026-09-09

Brent crude rises above $100/barrel as US-Iran tensions and Houthi attacks threaten supply. Cost headwind for UK SMEs with high fuel or energy exposure: operating margins squeezed as input costs rise. Named: companies BP plc, Centrica, Exxon Mobil Corporation; sectors transport and logistics.

1. Step 1 · The triggerUS-Iran tensions and Houthi attacks on Saudi cities push Brent crude above $100/barrel as supply fears mount
2. Step 2 · Knock-onglobal oil supply tightens, raising international benchmark prices and increasing energy input costs worldwide
3. Step 3 · Knock-onUK fuel and energy prices rise as higher crude costs pass through to pump and utility bills
4. Step 4 · Reaches youUK SMEs with high fuel or energy exposure see operating margins squeezed as input costs rise

The trigger is reported by the source below. The steps that follow are Branch²’s traced reasoning — how the shock could reach a business like yours, not a prediction.

Source: The Guardian Business

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