The British Pound Sterling (GBP) is a major currency in international finance and the world's oldest currency still in use. It is the official currency of the United Kingdom and its territories, and is also widely used in international transactions. GBP is one of the most important currencies used in the global foreign exchange markets, and is a major currency for investment and trading. It is also used as a benchmark for other currencies, and is a popular choice for hedging and speculation due to its high liquidity. Therefore, the GBP plays an important role in the global financial markets.