One of the most important events of the current century has been the spread of the COVID19 and its devastating effects on the world economy. Because this disease is a pandemic, as a result, it has challenged all economies in some ways and it has had consequences such as unemployment, poverty, negative economic growth, and so on. So, this is a kind of task that we should survey and investigate this destructive impacts and its results on economy and try to overcome. On the other hand, events have occurred simultaneously in the world that can affect the economies of countries such as Brexit. Economic considerations are one of the questions that will weigh on MPs’ minds when they come to scrutinize and vote on the Government’s EU withdrawal agreement. This article summarizes what is known about the long-term economic impact of Brexit and answer questions that may arise in the minds of readers. This article consists of two main parts: the first part is about investigate the effect of COVID19 on UK economy and new COVID. The second part is about investigate the consequences of BREXIT on UK economy. The main contribution of the article is that we have surveyed the effect of COVID19 and Brexit on the UK economy in details in different dimensions such as economic means GDP, jobs, services, industries and etc. and social life and their lifestyle changes means business activities, education, transportation and etc. The main goal of this article is investigation the consequences of COVID19 and Brexit on UK economy simultaneously. The research is done by exploring of the latest economic analysis related to the COVID-19 pandemic in order to identify its effects on UK economy throughout 2020 and Brexit too. The results show that improving economic conditions is a long-term matter and Brexit will definitely have an impact on the future of the UK and some other countries.