Should Brits vote to leave the European Union, it would set a precedent. The UK would be the first member state to exit the EU. And many British civil servants working in Brussels would have to pack their bags and leave.

More from this Brexit Special of Focus on Europe: http://www.dw.com/en/focus-on-europe-a-special-on-the-brexit-2016-06-15/e-19287269-9798