The Big Ben clock tower and the Houses of Parliament are seen in pre-dawn light on a foggy morning in central London January 21, 2014. REUTERS/Andrew Winning (BRITAIN - Tags: CITYSCAPE POLITICS ... more 
The Big Ben clock tower and the Houses of Parliament are seen in pre-dawn light on a foggy morning in central London January 21, 2014. REUTERS/Andrew Winning (BRITAIN - Tags: CITYSCAPE POLITICS ENVIRONMENT) less 
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Reuters | Photo By ANDREW WINNING / REUTERS
Tue, Jan 21, 2014 6:15 AM EST