Chances are you have some cocaine in your wallet

More than 99% of the banknotes in circulation in the UK are tainted with cocaine, according to a study.

The study was carried out by Mass Spec Analytical (MSA), based in Bristol, using notes supplied by the Bank of England's Returned Notes Centre in Loughton in Essex.

It examined more than 500 notes worth £7,750, in all four denominations.

Only four of those tested showed no trace of the white powder.