Shamima Begum v The Secretary of State for the Home Department

On an appeal against deprivation of citizenship on national security grounds, the Special Immigration Appeals Commission must scrutinise the evidence rigorously while respecting the Secretary of State’s evaluative assessment of risk. A consideration omitted from a decision under section 40(2) of the British Nationality Act 1981 makes the decision unlawful only if it was obviously material under the Wednesbury standard.

Common law fairness does not require prior representations before a national-security deprivation decision. The statutory notice provisions, the distinctive appellate review by SIAC and the risk of pre-emptive return necessarily exclude that requirement. Any error remains immaterial where SIAC properly finds that the outcome would inevitably have been the same.

Section 192 of the Equality Act 2010 creates a general exemption for proportionate action taken to safeguard national security, including from the public sector equality duty.

The appellant was deprived of British citizenship under section 40(2) of the British Nationality Act 1981 because the Secretary of State assessed that she posed a threat to national security. She had travelled to Syria aged 15 and aligned with ISIL. SIAC later found a credible suspicion that she had been trafficked for sexual exploitation, but dismissed her appeal against deprivation.

Following earlier litigation culminating in R (Begum) v Special Immigration Appeals Commission [2021] UKSC 7, the appellant elected to pursue her substantive appeal while remaining outside the United Kingdom. SIAC dismissed that appeal on 22 February 2023.

The present appeal concerned whether the deprivation decision was unlawful because of trafficking-related obligations under article 4 of the ECHR, failure to consider trafficking or de facto statelessness, procedural unfairness, or breach of the public sector equality duty.

1. Appeal dismissed. The Secretary of State’s decision to deprive the appellant of citizenship was not unlawful. SIAC had correctly dismissed the substantive appeal.

2. Article 4 of the ECHR generated no obviously material consideration which the Secretary of State was required to address. The appellant was outside United Kingdom jurisdiction and control. There was no duty to repatriate her under the protective, recovery or investigative obligations. The possible protective failures occurred four years earlier and lacked the necessary connection with the deprivation decision. The non-punishment principle did not extend from criminal prosecution to deprivation of citizenship, and no restitutionary duty arose from a merely possible breach.

3. The possibility that the appellant had been trafficked was not an omitted mandatory consideration at common law. The Secretary of State knew in substance that she had travelled as a vulnerable child who may have been radicalised, manipulated or exploited. He was entitled to conclude that her victimhood did not outweigh the national-security assessment. Voluntariness was not binary, and SIAC could defer to the specialist assessment of the intelligence agencies on its degree and significance.

4. Section 40(4) of the British Nationality Act 1981 concerns de jure statelessness, which is a binary question. Although the appellant was not de jure stateless when deprived, the Secretary of State knew that she had no realistic alternative country of admission. He had therefore considered the practical substance of the asserted de facto statelessness.

5. SIAC erred in holding that fairness required an opportunity to make prior representations. Reading sections 40(2) and 40(5) with section 2B of the Special Immigration Appeals Commission Act 1997, Parliament necessarily excluded prior consultation for national-security deprivation decisions. Advance notice could frustrate the protective purpose by encouraging a person abroad to return pre-emptively. SIAC’s intensive appellate scrutiny, supported by Special Advocates, supplied the relevant opportunity to challenge the decision.

6. In any event, SIAC was entitled to find under the Simplex principle that the outcome would inevitably have been the same. Its specialist constitution and access to open and closed evidence enabled it to determine whether an identified error was material without substituting its own national-security assessment.

7. Section 192 of the Equality Act 2010 creates a general exemption for anything proportionately done to safeguard national security. It was not confined to substantive contraventions of duties created by that Act. The exemption excluded the public sector equality duty on the facts.

1. Court of Appeal (Civil Division): By [2024] EWCA Civ 152, dismissed the appeal and upheld SIAC’s conclusion that the deprivation decision was lawful.
2. Special Immigration Appeals Commission: On 22 February 2023, dismissed the substantive appeal against deprivation of citizenship under section 40(2) of the British Nationality Act 1981.
3. Supreme Court: In R (Begum) v Special Immigration Appeals Commission [2021] UKSC 7, reversed the earlier Court of Appeal and Divisional Court decisions concerning entry to the United Kingdom and held that the Secretary of State had lawfully refused leave to enter for the appeal.
4. Court of Appeal and Divisional Court: On 16 July 2020, allowed the appellant’s earlier appeals and judicial review concerning her ability to enter the United Kingdom and participate effectively in the SIAC proceedings.
5. SIAC and Administrative Court: On 7 February 2020, determined the preliminary issues against the appellant and dismissed the associated judicial review claim.