The British Sterling swung between gains and losses on Monday against the U.S. Dollar and the shared currency before the British central bank Governor Mark Carney's speech at the New York's economic club. The Pound fluctuated at $1.6365 by 7:31 a.m. London time following a jump to the strongest level seen since August 2011 at $1.6443 on December 2, while it traded at 83.71 pence a Euro.