A fall in the interest rates in the UK, would cause the exchange rate of the UK to decline.
Exchange rate is the rate at which one currency is exchanged for another currency. Interest rate is the return earned by investors for allowing business owners use their funds.
When interest rate declines, the return earned by investors would fall. This would discourage investors from investing. This would lead to a decline in the demand for the UK currency. This would depress the exchange rate.
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