A man walks past the London Stock Exchange in the City of London
A man walks past the London Stock Exchange in the City of London October 11, 2013. Shares in Britain's Royal Mail rocketed to a near 40 percent premium above their issue price in Friday's stock market debut, fuelling a debate about whether they had been priced too low in order to guarantee a successful privatisation. REUTERS/Stefan Wermuth (BRITAIN - Tags: POLITICS BUSINESS)