Prior to 1971 the currency was very complicated. There were 12 pennies in a shilling and 20 shillings in a pound. This was not suitable for modern international commerce and especially computers.
When they wanted to know what the half of 1 was...
On 15 February 1971, known as Decimal Day, the United Kingdom and Ireland decimalized their currencies.
1972
All of these denominations beloing to the old redundant British predecimal currency system used by many of the British Empire/Commonwealth countries. 5 Guineas (105 Shillings) - converted to £5.25 in decimal currency. 2 Shillings (1 Forin) - converted to £0.10 in decimal currency. 2 Florins (4 Shillings) - converted to £0.20 in decimal currency. 12 Pence (1 Shilling) - converted to £0.05 in decimal currency.
1955
Britain adopted decimal currency in 1971.
When they wanted to know what the half of 1 was...
No. The UK refuses to adopt the Euro and refuses to accept the Euro.
United States
On 15 February 1971, known as Decimal Day, the United Kingdom and Ireland decimalized their currencies.
The Sixpence is part of a redundant or obsolete currency. At the time of Britain's conversion to decimal currency, the sixpence converted to 2.5 New Pence for which there was no equivalent coin.
On Monday 15 February 1971 Britain changed its currency to decimal from the old £ shillings and pence. We have now had decimal currency for 41 years. Correct as 22 March 2012
Britain ,Because they have the very stong in value POUNDNote 100%
What was currency in Britain during the 1700s?
Poland didn't adopt euro currency yet. Poland still uses PLN (Polish New Zloty).
Decimal currency was officially introduced in Britain on "Decimal Day" the 15th of February, 1971, with the Half New Penny, 1 New Penny and 2 New Pence coins being issued. The 5 and 10 New Pence coins had been introduced much earlier in April, 1968, and the 50 New Pence coins were introduced in October, 1969. The new currency consisting of 100 Pence to the Pound replaced the old currency of Pounds, Shillings and Pence. 12 Pence to the Shilling, and 20 Shillings to the Pound.
They didn't want to adopt to a single currency because it would withdraw their own coins and paperbill's from circulating.