The British are willingly giving away their EU citizenship. Since each member state sets its own rules regarding non-EU immigration, the EU can not "force" anything to happen or not happen.
EU citizenship entails, among others, the rights of freedom of movement and of non-discrimination because of nationality. The UK has made it abundantly clear that it will not respect these rights, regardless of what the EU or its member states do. Ending freedom of movement and being able to "put British people first" were among the main arguments of the Brexit campaign.
So why wouldn't somebody consider leaving a place where they and their families will be open to discrimination, and where they will be allowed to remain only at the whim of the UKBA?
EU citizenship entails, among others, the rights of freedom of movement and of non-discrimination because of nationality. The UK has made it abundantly clear that it will not respect these rights, regardless of what the EU or its member states do. Ending freedom of movement and being able to "put British people first" were among the main arguments of the Brexit campaign.
So why wouldn't somebody consider leaving a place where they and their families will be open to discrimination, and where they will be allowed to remain only at the whim of the UKBA?