Coins of the pound sterling of all coins except the £2. The original intention was to exclude both the £1 and £2 coins from the redesign because they were "relatively new additions" to the coinage, but it was later decided to include the £1 coin. This was the first wholesale change to British coinage since the first decimal coins were introduced in April 1968. The new coins were initially to be put into circulation in early 2008, although they did not actually start to appear until mid-2008. The major design feature was the introduction of a reverse design shared across six coins (1p, 2p, 5p,
Decimal separator comma respectively, when it is used as a decimal separator; these are the usual terms used in English, with the aforementioned generic terms reserved for abstract usage. In many contexts, when a number is spoken, the function of the separator is assumed by the spoken name of the symbol: comma or point in most cases. In some specialized contexts, the word decimal is instead used for this purpose (such as in ICAO-regulated air traffic control communications). In mathematics the decimal separator is a type of radix point, a term that also applies to number systems with bases other than ten.