£14 Billion of Cash Could Soon Be Worthless. Here's What to Do With It.

That's the cutoff date for using the old notes set by the Bank of England, with new polymer notes featuring mathematician Alan Turing and artist J.M.W. Turner replacing the old paper variations. She says most UK banks will still accept the old paper notes after the deadline, and if not, it's always possible to do a postal exchange with the Bank of England. There are about £14 billion worth of paper £20 and £50 notes still in circulation, with 1.2 million people in the UK still relying on cash to make regular payments. [Extracted from the article]