Question to the Home Office:

To ask the Secretary of State for the Home Department, whether support for a proscribed terrorist organisation automatically qualifies for deprivation of citizenship on the understanding of being conducive to the public good.

The British Nationality Act 1981 provides the Secretary of State with the power to deprive an individual of their British citizenship where:

• The Secretary of State is satisfied that it would be conducive to the public good;

• The person acquired citizenship as a result of fraud, false representations or concealment of a material fact

The Government considers that deprivation on ‘conducive grounds’ is an appropriate response to activities such as those involving:

• National security, including espionage and acts of terrorism directed at this country or an allied power;

• Unacceptable behaviour of the kind mentioned in the then Home Secretary’s statement of 24 August 2005 (‘glorification’ of terrorism etc);

• War crimes; and

• Serious organised crime.

The Home Office publishes data relating to those deprived of British Citizenship on ‘conducive to the public good’ grounds. These are published in the Government Transparency Report: Disruptive and Investigatory Powers. Reports have been published up to 2024.

The figures from the previous five years, of individuals who have been deprived of their British citizenship for this reason, are below:

In the interest of safeguarding national security, we do not break down these figures into sub-categories.

This report also references s66 of the Immigration Act 2014, which allows the Secretary of State to deprive a person of their British citizenship on the ground it is conducive to the public good even if it would leave them stateless. To date, this power has not been used.