1. benchmark interest rate. The Bank of England is the central bank of Britain. Responsible for setting the main interest rate, which is the lowest loan interest rate, that is, the basic interest rate. In the first week of each month, the Bank of England will use interest rate adjustment to send a clear monetary policy signal to the market. As the spread is the main reason of international capital flow, the change of benchmark interest rate usually has a great impact on the pound.

2. 10-year gilt yield. The yield difference between British Phnom Penh bonds and other countries' bonds or US Treasury bills in the same period will also greatly affect the exchange rate between the pound and other countries' currencies.

3. Important British economic data. The main economic data in Britain include: average income from initial unemployment rate, retail price index, industrial output value, gross domestic product, purchasing managers' index, and survey report on manufacturing and service industries.

4.3-month Europound deposit futures. The price of this contract reflects the market's expectation of the interest rate of European pound deposits in three months, and the difference of futures contract prices in other countries in the same period is likely to change the exchange rate between Britain and pound.

5. Britain's main trading partners. Britain's main export targets are the United States and the euro zone, and Britain's main import targets are the United States and the euro zone. Once these trading partners have an emergency, the trade situation will change, which will also lead to changes in the interest rates of the pound and the United States.