Summary: A more tailored immigration policy
It is likely that, after Brexit, Britain would not agree to the free movement of labour with the European Union. Policy would change to restrict the number of low skilled workers entering the country and shift towards attracting more highly skilled workers (including from outside the European Union). This would be a potential headache for low-wage sectors heavily dependent on migrant labour, such as agriculture, but could benefit other sectors with a shortage of highly skilled labour. Overall, policy would shift to be more specifically designed for Britain’s migration requirements.