Denationalization, to deprive citizens of citizenship, is becoming an international trend – especially in order to fight terrorism. Public opinion is generally positive to these measures. However, few consider the consequences of denationalization. Only when investigating further it becomes clear that citizenship scholars are very concerned about this new trend pointing out that it easily becomes arbitrary, creates statelessness, threatens equality and how it is not an effective measure. This thesis investigates whether Members of Parliament in the UK address these concerns when extending denationalization powers, giving the Secretary of State the most extensive powers to denationalize among all liberal democracies.