Doctoral Thesis / Dissertation from the year 2023 in the subject Economics - Case Scenarios, grade: A, Saurashtra University (Department of Commerce), language: English, abstract: Afterward the British conclusion to leave, Europe's path, even its purpose, has again develop a matter of choice. Brexit marks both a chief lawful variation for the UK and an important come separately for the EU. Britain is to grip a survey whereby the countries will agree whether or not the nation should be a portion of the correct to withdraw from the combination in contract with its individual legitimate necessities. This referendum was decided by Assembly when it approved the EU referendum (Public Opinion) act 2015. Afterward British choice to authorization, Europe route, even its purpose, has over develop a matter of choice. Brexit marks mutually a chief legitimate modification for the UK and an important separation for the EU. If only for this cause, the intercession of the terms of Brexit must take an extended-term view, outside the perhaps convoluted discussions that will start in the pending months. The present study is divided into five chapters. The first chapter of this study is the 'Sample Profile' of profile of selected sample is included. Researcher has selected the companies listed in the National Stock Exchange. The second chapter is the 'Conceptual Background of BREXIT'. The third chapter of present research work is 'Research Methodology'. This chapter presents various methods and techniques for the study and also shows that the 71-literature review of the present research work. In the fourth chapter of this research, 'Data Analysis and Interpretation'. This chapter has showed the analysis of the data with the help of eight criteria for scientific conclusion. Researcher has calculated mean and stand deviation of Pre-Brexit and Post-Brexit condition, T-test samples for means has been used for the analysis of about the Automobile, IT, Jems-Jewellry, Pharmaceutical and Text