Specifically, conversion of the currency of the United Kingdom in 1971 from pounds, shillings and pence to a decimal system in which one pound was worth 100 new pence (later renamed simply pence).
“During decimalisation of the pound sterling, the general public had the impression that the process was accompanied by rapid inflation.”
“The rollout, which is being billed as the biggest UK financial changeover since decimalisation, will happen simultaneously across the country and not region by region.”
“The decimalisation of the currency in 1971 made no difference to this tradition.”