Norway and some other countries follow the free movement rules of the single market without being EU members.
The UK and France have cooperated on border controls around French ports for years. How much do we spend on doing so?
After we leave the EU, we cannot take back control of £350 million a week.
The controls affect all passengers entering and leaving the European border-free Schengen area, not just UK citizens.
Voters have expressed mixed opinions to pollsters on whether they’d prefer a more economically risky ‘hard Brexit’.
We've provided sources and answers to some more of your EU questions.
The UK can be asked for financial support for Eurozone countries but is guaranteed its money back.
We looked into how the EU divides up the fish in its waters, the UK's position within the EU fishing industry and if leaving the EU would change things.
Claims that there are 5,000 terrorists loose in Europe have been attributed to the director of Europol, the EU law enforcement agency. He says otherwise.
We often see conflicting figures on the percentage of UK laws that come from the EU. There's no one definitive answer, and many ways of calculating this.
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