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Pound sterling

Currency of the United Kingdom

  • 44 min read
  • 12 chapters

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Through Currency, United Kingdom and Central bank

Sterling is the world's oldest currency in continuous use since its inception. In 2025, it was the fourth-most-traded currency in the foreign exchange market, after the United States dollar, the euro, and the Japanese yen. Together with those three currencies and the renminbi, it forms the basket of currencies that calculate the value of IMF special drawing rights. As of early 2026, sterling is also the fourth most-held reserve currency in global reserves.

The Bank of England is the central bank for sterling, issuing its own banknotes (as used in England and Wales) and regulating issuance of banknotes by private banks in Scotland, such as the Bank of Scotland and Clydesdale Bank, and in Northern Ireland, such as by Danske Bank. Sterling banknotes issued by other jurisdictions are not regulated by the Bank of England; their governments guarantee convertibility at par. Historically, sterling was also used to varying degrees by the colonies and territories of the British Empire.

Names

Etymology

The basic unit of currency in medieval England was the silver penny or sterling, weighing about 1⁄240 of a tower pound. Two hundred and forty of these coins made a "pound of sterlings". This term (shortened to "pound sterling" in later usage) continued to be used in accounting even after the sterling had ceased to circulate. The earliest known instances of the term occur in Orderic Vitalis's 12th-century Historia Ecclesiastica, which makes mention of librae sterilensium.

The origin of the word sterling itself is unclear. It first appears in the 11th and 12th centuries, suggesting that it was coined to describe the new, heavier penny introduced by the Normans. According to the Oxford English Dictionary, the most plausible theory is that it represents Old English *steorling, meaning "coin with a star" (a pair of stars having appeared on certain Norman pennies). The numismatist Philip Grierson rejects this, however, noting that the starred penny was only minted between 1077 and 1080 and formed a tiny fraction of the total coinage issued by the Normans. Grierson suggests instead that the first element is *stēre, meaning "stout" or "strong". In support of this theory, he notes that the Roman solidus had a name with a very similar meaning and was also introduced to replace a lighter coin.

An old theory that the sterling was so named because it was introduced to England by Easterlings, i.e. Hanseatic merchants, is untenable on historical and phonological grounds.

Symbol

The currency sign for the pound unit of sterling is £, which (depending on typeface) may be drawn with one or two bars: the Bank of England has exclusively used the single bar variant since 1975. Historically, a simple capital L (in the historic black-letter typeface, L) placed before the numerals, or an italic l. after them, was used in newspapers, books and letters. The Royal Mint was still using this style of notation as late as 1939. Use of the letter ⟨L⟩ for pound derives from medieval Latin documents: "L" was the abbreviation for libra, the Roman pound (weight), which in time became an English unit of weight defined as the tower pound. A "pound sterling" was literally a tower pound (weight) of sterling silver. In the British pre-decimal (duodecimal) currency system, the term £sd (or Lsd) for pounds, shillings and pence referred to the Roman libra, solidus, and denarius.

Notable style guides recommend that the pound sign be used without any abbreviation or qualification to indicate sterling (e.g., £12,000). The ISO 4217 code "GBP" (e.g., GBP 12,000) may also be seen should disambiguation become necessary.

Currency code

The ISO 4217 currency code for sterling is "GBP", formed from the ISO 3166-1 alpha-2 code for the United Kingdom ("GB") and the first letter of "pound". In historical sources and some specialist banking uses, the abbreviation stg (in various styles) has been used to indicate sterling. Many stocks on the London Stock Exchange are quoted in penny sterling, using the unofficial code "GBX".

Cable

The exchange rate of sterling against the US dollar is referred to as "cable" in the wholesale foreign exchange markets. The origins of this term are attributed to the fact that from the mid-19th century, the sterling/dollar exchange rate was transmitted via transatlantic cable.

Slang terms

Historically almost every British coin had a widely recognised nickname, such as "tanner" for the sixpence and "bob" for the shilling. Since decimalisation these have mostly fallen out of use except as parts of proverbs.

A common slang term for the pound unit is "quid" (singular and plural, except in the common phrase "quids in"). Its origin is unknown: possible derivations include scudo, the name for a number of currency units used in Italy until the 19th century, introduced by Italian immigrants; or from Latin quid via the common phrase quid pro quo, literally, "what for what", or, figuratively, "An equal exchange or substitution". The term "nicker" (also both singular and plural) may also refer to the pound.

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