Poster from British Rail showing their fare changes in the new decimal currency (Catalogue ref: RAIL 1005/409)
On 15 February 1971, or ‘Decimal Day’, the United Kingdom and Ireland decimalised their currencies. It marked the end of the old currency consisting of pounds, shillings and pence where the pound was made up of 240 pence, with 12 pence in a shilling and 20 shillings in a pound.