In around 2006, a Newsnight producer wrote his name on a £10 note in Staffordshire and a decade later a colleague took that same £10 note out at a cash point in South London. Various BBC Radio outlets asked me how rare an event this was and below are a couple of my appearances from August 2016.

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I also subsequently wrote an article for Significance Magazine looking at the calculations associated with these statistics, which you can read here.

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