I can recall parity between the pound and dollar in 1983/84 after Reagan jacked up interest rates to stamp out the 1970's inflationary binge resulting from the vietnam war.
And Oil went down to $10 in the same period. I had relatives living in Aberdeen working for Bristow. The Yanks all went home almost overnight and the relatives were moved to East Anglia. They had to almost give away their Aberdeen house, and buy an overpriced pile in Norfolk at the peak in 1988.