At 4.30 am ET Wednesday, IHS Markit is scheduled to issue UK composite PMI survey data. Economists forecast the composite PMI to drop to 56.3 from 59.1 in August.

Ahead of the data, the pound fell against its major rivals. The pound was worth 1.2688 against the greenback, 133.18 against the yen, 1.1673 against the franc and 0.9217 against the euro as of 4:25 am ET.