A «run on the pound» occurs when financial traders believe that it is not in their interest to own «pounds», but an alternative like dollars or euros, or even gold, is a better currency to own. (politics.stackexchange.com)
Jeremy Corbyn has told ITV News that the possibility of a run on the pound if Labour takes power is a «serious» concern. (itv.com)
He said: «We are in danger, if the government is not careful, of having a proper sterling collapse, a run on the pound.» (en.wikipedia.org)