In conclusion, since 1973 when Britain joined the European Union, that was the starting point of single market which result in many advantages for the Britain economic. When comparing the result that might happen in the Britain economic if the Britain leaves the European Union, I support that the Britain should stay in the European Union in order to gain the benefit of being a member. As a free trade zone, the members of the European Union are free to import and export between the member states and this is a huge benefit to the businesses because they can become more profitable by reducing the production cost. While the ageing population seem to become the Britain’s problem, the free immigration between the European Union members is one of the solutions that help the Britain overcomes this problem. Moreover, tax-free is a significant benefit of Britain which very attractive for the investor. After carefully considered the result in economic, it seems to me that belonging under the European Union flag with another 28 countries will provide the Britain more privileges.