I had a EUR 20 note recently which I needed to change for GBP, but apparent ly they can no longer be changed in the UK, I tried both my bank branch ("c omputer says no") and two bureaux de change ("can't take used Euro's"), wha t is the current legal status of Euro currency in the UK?
I assumed they were like U.S. Dollars, being freely exchangeable worldwide, but are they in fact like Indian rupees, which are officially invalid and unobtainable outside their home territory?
Is this some unofficial action in response to the EU referendum, to destroy confidence in the currency?