There is
some guidance, but the last category is so wide as to make it virtually
carte blanche (subject to the usual limits on the exercise of public powers).
55.4.4 “Conduciveness to the Public Good” means depriving in the public interest on the grounds of involvement in terrorism, espionage, serious organised crime, war crimes or unacceptable behaviours.
I suppose that, for now at least, the HRA provides some limit to the discretion as a deprivation decision will amount to a
prima facie breach of Art 8 right to private life, such that the deprivation must be a proportionate way of achieving the legitimate aims listed therein e.g. national security, health, crime.