There's reasons pushed to make Britain withdraws from EU , some of these reasons related with immigrants and refugees problem which EU facing it , this withdrawal will enable Britain following a new system reduces from allowing to immigrants from the out of EU for the entry to Britain
The immigrants in Britain estimated 863,000 , which leads to a big problem for Britain economy worth exceed 3 billion pound yearly , according to London school of economics and political science university
Also the fear from terrorist attacks one of strong reasons which led to the withdrawal from EU , because that will stop the open border agreement between EU countries
Britain also wants to have an influence because their influence within the EU is very weak, and if her departure from the EU will be able to act freely, and get seats in international institutions, that was lost them due to the accession of the European Union such as the WTO