Enthusiasts skate on a frozen fen in sub-zero temperatures on February 11, 2012 in Sutton, England. Last night the Met Office recorded the coldest temperature so far this winter, -16C, was registered in Holbeach, Lincolnshire with many areas of England experiencing temperatures between -10C and -15C. (Photo by Oli Scarff/Getty Images)

The sun rises over a frost-covered scene on February 11, 2012 in Earith, England. (Photo by Oli Scarff/Getty Images)