A & Ors v. Secretary of State for the Home Department

Factual and Procedural Background

Nine foreign nationals (“the Appellants”) were certified by the Respondent (the Home Secretary) under section 21 of the Anti-terrorism, Crime and Security Act 2001 (“the 2001 Act”) between December 2001 and February 2002. Certification triggered their detention under section 23, a power that allows indefinite imprisonment without charge or trial where deportation is impossible (principally because article 3 of the European Convention on Human Rights (“the Convention”) forbids removal to a State where torture is likely).

The Special Immigration Appeals Commission (“SIAC”) upheld the Appellants’ substantive challenges and quashed the Human Rights Act 1998 (Designated Derogation) Order 2001 (“the Derogation Order”). The Court of Appeal (Judge Woolf CJ, Judge Brooke LJ and Judge Chadwick LJ) reversed SIAC on 25 October 2002, restoring both the Derogation Order and the detention regime. The present appeals are from that Court of Appeal decision to the Appellate Committee of the House of Lords.

Legal Issues Presented

1. Whether, for the purposes of article 15 of the Convention, there existed “a public emergency threatening the life of the nation” that could justify derogation from article 5(1).
2. Whether the Derogation Order and section 23 of the 2001 Act were “strictly required by the exigencies of the situation.”
3. Whether section 23 discriminates against foreign nationals, contrary to article 14 when read with article 5.
4. Whether the impugned measures are inconsistent with the United Kingdom’s other international obligations.

Arguments of the Parties

Appellants’ Arguments

• The Respondent had not demonstrated an emergency of sufficient gravity; any threat was serious but not one “threatening the life of the nation.”
• Indefinite detention of non-deportable foreigners was not “strictly required”; the same threat from British suspects was met by far less intrusive means.
• Limiting detention powers to foreign nationals was irrational and constituted unjustified discrimination under article 14.
• The Derogation Order was therefore invalid and section 23 incompatible with articles 5 and 14 of the Convention.

Respondent’s Arguments

• After 11 September 2001 an imminent, unprecedented terrorist danger existed; Government and Parliament were best placed to assess it.
• Foreign suspects posed the dominant and more immediate risk; detention was proportionate and fell within the article 15 margin of appreciation.
• Differential treatment was justified because foreign nationals have no right of abode and remain free to leave the United Kingdom (“a prison with three walls”).
• The Derogation Order complied with article 15 and section 23 was a lawful, carefully limited immigration measure.

Table of Precedents Cited

Court's Reasoning and Analysis

1. Public Emergency. The House (by majority) accepted SIAC’s finding that, post-11 September 2001, a grave terrorist threat constituted a “public emergency threatening the life of the nation.”

2. Strict Necessity. Article 15 demands that any derogating measure encroach upon rights only to the extent strictly required. The House found:

• Indefinite detention without trial is at the extreme end of rights-invasion and therefore warrants the most anxious scrutiny.
• British suspects, presenting a comparable risk, were managed through less intrusive measures; no cogent evidence showed foreign suspects posed a materially different or greater threat.
• The ability of detainees to “leave voluntarily” did not cure the disproportion because, in reality, safe relocation was impossible for most.

3. Discrimination. Section 23 applied solely to foreign nationals. Because the relevant comparator is a British suspect who cannot be deported, the distinction rested purely on nationality. Lacking objective justification, it violated article 14 and concurrently demonstrated that detention was not “strictly required.”

4. Consistency with Other International Obligations. By operating in a manner inconsistent with article 14 of the Convention and articles 9 & 26 of the ICCPR (non-discrimination), the measures failed the final limb of article 15(1).

5. Resultant Findings. The Derogation Order could not stand; without a valid derogation, section 23’s detention power was incompatible with article 5. Even if an emergency existed, the discriminatory and sweeping character of section 23 rendered it disproportionate.

Holding and Implications

Holding: The Appellate Committee ALLOWS the appeals; the Human Rights Act 1998 (Designated Derogation) Order 2001 is QUASHED; section 23 of the Anti-terrorism, Crime and Security Act 2001 is declared INCOMPATIBLE with articles 5 and 14 of the European Convention on Human Rights.

Implications: The detention regime created by Part 4 of the 2001 Act cannot lawfully continue. Parliament must decide whether to repeal, amend, or replace the impugned provisions. The decision underscores that national-security legislation, however grave the threat, must remain proportionate and non-discriminatory, and that courts will rigorously police the boundaries set by fundamental rights.