Bank Of England Headquarters Ahead of Interest Rate Decision

A passenger looks from the window of a London bus as it passes the Bank of England (BoE) in London, U.K., on Thursday, March 7, 2013. The pound dropped to its weakest level in more than 2 1/2 years versus the dollar before Bank of England policy makers announce their decision on whether they will add more stimulus to boost the U.K. economy. Photographer: Simon Dawson/Bloomberg via Getty Images