No. If the GBP goes up 10% relative to USD, and oil prices go up by 10% in USD, then oil prices remained flat in countries using the GBP, but increase for thos

No. If the GBP goes up 10% relative to USD, and oil prices go up by 10% in USD, then oil prices remained flat in countries using the GBP, but increase for those using USD. There's no magic here.