British citizens in Gibraltar are concerned about negative economic effects if the UK leaves the EU. Business and trade relations between The Rock and the bordering Spanish region have proven successful over the years.

More on Brexit:
http://www.dw.com/en/cameron-begins-final-push-to-avoid-brexit-as-campaigning-resumes/a-19341889
http://www.dw.com/en/ukips-future-hinges-on-brexit-vote/a-19342184