The pound traded near a six-week high against the dollar as some speculators trimmed bets on the British currency's decline, but sentiment remained weak due to the uncertainty surrounding the way Britain will emerge from the European Union.
The dollar traded at 108.20 yen on Wednesday, near a seven-week high of 108.37 yen.
Sterling was at $ 1.2487, holding up 0.6 percent on Tuesday when it briefly touched its highest level since July 19.
Among other currencies, the euro was steady at $ 1.1065, little changed in Asian trading.
The Australian dollar was at $ 0.68485, down 0.27 percent.
The dollar index, which measures the greenback's strength against a trade-weighted basket of six major currencies, was down 0.03 percent at 98.288.