Pound sterling

The Pound Sterling — or, less formally, the pound, or quid (TV: Rose) — was a form of currency used in the United Kingdom through at least the early 21st century.

Unit of currency
Until 1971, the pound was divided with a system of twenty shillings to a pound and twelve pennies to a shilling. (TV: Remembrance of the Daleks)

Susan Foreman caught the attention of her teachers because of her inability to remember how many shillings were in a pound when she and the First Doctor settled in London in 1963. She believed Great Britain had switched to the decimalised pound, something that would not occur until until 1971. (TV: An Unearthly Child)

The Monk put two hundred pounds in a London bank in 1968, then he nipped forward two hundred years and collected a fortune in compound interest. (TV: The Time Meddler)

Around the late 20th century or early 21st century Britain introduced a five pound coin. (TV: Battlefield)

The Third Doctor and Sarah Jane Smith once discovered that they were in a parallel universe because £5 notes had a picture of Edward IX. (COMIC: Who's Who?)

According to one account, the UK was no longer using this currency by 2050, having switched to credits. (TV: Oroborus) According to another, however, the UK had converted to the Euro some time before 2062. (PROSE: The Last Dodo)

Known exchange rates

 * In 2008, £1 was worth slightly more than fifty Sto credits. (TV: Voyage of the Damned)
 * £1 was worth approximately 5.1 Hyspero Dirnas. (PROSE: The Panda Book of Horror)