https://en.wikipedia.org/wiki/Pound_sterling
Sterling (ISO code GBP, traditionally abbreviated as Stg) is the official currency of the United Kingdom, Jersey, Guernsey, the Isle of Man, Gibraltar, South Georgia and the South Sandwich Islands, the British Antarctic Territory, and Tristan da Cunha. Sterling is the oldest currency in continuous use. The pound (sign: £) is the main unit of sterling, and the currency itself may be …