Sterling fell nearly one percent in American trade against the dollar, amid a lack of data from Britain, and following a basket of them from the US, the world's largest economy.
As pf 07:08 GMT, GBP/USD rose 0.85% to 1.3317 from the opening of 1.3431, with a one-week high at 1.3466, and a session-low at 1.3385.
Earlier from Britain, Prime Minister Theresa May spoke after EU leaders agreed to start the second stage of Brexit negotiations, where she said that Britain will work to achieve a better and more trade-stimulating settlement with the world, while controlling borders, laws and funds.
Otherwise, earlier US data showed the Empire State Manufacturing Index dipped slightly to 18.0 in December from 19.4, missing expectations of 18.8.
US industrial production slowed down to 0.2% in November from 1.2% in October, revised from 0.9%, while analysts expected a 0.3% rise. The Capacity Utilization Rate rose to 77.1% from 77.0% in October, missing expectations of 77.2%.