If you earn £20 per hour, your annual salary can be calculated by multiplying your hourly wage by the total number of hours you work in a year. Assuming a standard full-time schedule of 40 hours per week and working 52 weeks a year, you would work a total of 2,080 hours annually. Therefore, when you multiply £20 by 2,080 hours, you arrive at an annual salary of £41,600. This calculation provides a clear understanding of how hourly wages translate into yearly earnings, which is particularly useful for budgeting and financial planning. It's important to note that this figure does not account for taxes or other deductions, which can affect your take-home pay.