Metrication in the United Kingdom that reported in 1818, and again in Parliament by Sir John Wrottesley in 1824. Another Royal Commission was set up 1838 by Chancellor of the Exchequer Thomas Spring Rice and it reported in 1841 that decimal coinage was required first. A third commission in 1853 advocated decimal coinage in the form £1 : 10 florins : 100 cents: 1000 mils. The first florins (one tenth of a pound sterling) were struck in 1849 as silver coins weighing and having a diameter of . An early supporter of the "Decimal Association" was the mathematician Augustus de Morgan whose articles supporting the
Pound sterling Later, in 1966, the British government decided to include in the Queen's Speech a plan to convert the pound into a decimal currency. As a result of this, on 15 February 1971, the UK decimalised the pound sterling, replacing the shilling and penny with a single subdivision, the new penny. For example, a price tag of £1 12s 6d became . The word "new" was omitted from coins minted after 1981. With the breakdown of the Bretton Woods system, the pound floated from August 1971 onwards. At first it appreciated a little, rising to almost $2.65 in March 1972 from