It is plausible that immigration policy may not change substantially after Brexit. Whether the United Kingdom gains any powers to restrict immigration from Europe will depend on its future relationship with the European Union. If Britain wanted to retain full access to the single market, it may have to keep the free movement of labour between the United Kingdom and the union. However, it is unlikely that Britain would sign up to such a deal, given that concerns about migration would probably have been one of the main reasons for a vote to leave.