GLASGOW, SCOTLAND - MAY 30: David Hayman and Yes Scotland Chief Executive Blair Jenkins join members of the Yes Scotland team, to mark the start of the regulated referendum period on May30, 2014 in Glasgow, Scotland. Scottish Independence referendum 16 week campaign period got underway today, the timeline period sees a strict limit applied to how much money registered campaigners can spend, in order to ensure a level playing field for both sides in the debate. (Photo by Jeff J Mitchell/Getty Images)
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Getty Images News Jeff J Mitchell