You should have some mathematical background (A-level, IB, AP, or any other equivalent secondary school qualification) and one of the following:
A lower second class (2.2) (or equivalent) undergraduate degree in economics or a related discipline (e.g. finance)
A lower second class (2.2) (or equivalent) undergraduate degree in business, management, politics, law, accounting, psychology, quantitative sociology, or financial journalism with a significant economics component
A lower second class (2.2) (or equivalent) undergraduate degree in a quantitative discipline (such as mathematics, engineering, computer science, or natural science) with a significant economics component.