There will be no immediate changes to laws in the UK.

 A new prime minister will be chosen from another politician in the Conservative Party by October .

Things may change after the prime minister's talks with the other EU leaders.

If they decide the UK will stay in the single market, this will mean that people in the UK would be able to easily live and work in other EU countries - and vice versa.

But if the UK decides to bring in work permit restrictions, then other countries could do the same, meaning British people would have to apply for visas (official documents) to work abroad in the EU.

Scottish First Minister Nicola Sturgeon has said there could be a second independence vote in Scotland.