The unit of currency used in the United Kingdom is the pound sterling, often symbolized by "£" and abbreviated as GBP (Great British Pound). The pound has a rich history and is one of the oldest currencies still in use today, dating back to Anglo-Saxon England. It is divided into 100 pence, and its value is influenced by various economic factors including inflation, interest rates, and market confidence. The pound sterling also serves as a key currency in international trade and finance, maintaining its status as one of the major currencies in the global economy.