In June a referendum will take place to decide whether the Uk will remain in the EU or not. They want to leave because they think that the EU is holding the Uk back. They want full control of their borders so there are not so many people trying to get jobs in the Uk from other countries.
The Eu's goal is to create a "United States of Europe" like America and the Uk does not was to be a part of it that is why they want to leave.
Reasons To Stay:
Millions of jobs are linked to our EU membership
It's easy for us to work and travel abroad
Consequences:
The country could lose money and go into recession
Businesses wanting to sell to the Eu will have to pay
Harder for people from the uk to get a job abroad