Sterling fell on Friday and was headed for a fourth consecutive week of losses as British Prime Minister Theresa May pressed ahead with plans for a parliamentary vote on her Brexit deal despite warnings it could topple her government.
Sterling's near-term fate hangs on whether May can win a majority for her Brexit deal in a vote on Dec. 11 that will define Britain’s departure from the European Union scheduled for March.
The odds look stacked against her getting the deal through a deeply divided parliament.
The pound was down 0.2 percent at $1.2754 at 1600 GMT, near an 18-month low of $1.2659 hit on Wednesday. It also weakened 0.3 percent against the euro to 89.27 pence.
Source : Reuters