R (Quila) v Secretary of State for the Home Department [2011] UKSC 45

In brief

Two couples challenged an Immigration Rule (paragraph 277) that required both sponsor and foreign spouse to be aged 21 or over before a marriage visa could be granted, introduced in November 2008 to combat forced marriage. The Supreme Court, by a 4:1 majority, held the rule was a disproportionate interference with article 8 Convention rights because the cost to the vast majority of genuine, innocent couples caught by the rule substantially outweighed the uncertain benefit in preventing a small number of forced marriages. Lord Wilson posed ten proportionality questions that the Secretary of State could not satisfactorily answer; Lady Hale emphasised that sweeping rules that penalise many to deter few require strong evidential justification. Lord Brown dissented, arguing the decision was a policy judgment for government.

Key provisions

• §45–58 (Wilson) — Structured proportionality where a rule affects many innocent parties to deter a few: Where a rule casts a wide net to address a specific harm, the proportionality enquiry requires evidence about (a) the size of the problem the rule is intended to address, (b) the proportion of those caught by the rule who contribute to the problem, (c) whether narrower alternatives could address the problem with less collateral interference, and (d) whether the interference with the rights of those not contributing to the problem is proportionate to the benefit achieved. Absent satisfactory evidence on these questions, the rule is not proportionate.
• §72–78 (Hale) — Evidential burden on the respondent to justify sweeping interference: A sweeping interference with fundamental rights requires strong evidential justification. The fact that a rule is "likely to help" or "is popular" is insufficient. Lady Hale criticised the absence of serious evidence on the rule's impact and the limited weight given to the rights of innocent couples kept apart or forced abroad.
• §46 (Wilson, adopting Huang) — Four-question proportionality enquiry: Lord Wilson adopted the Huang four-question proportionality enquiry (sufficiently important objective / rational connection / less intrusive means / fair balance) and applied it to the immigration rule. The enquiry is structured and sequential; a failure at any question is fatal.

When relevant

Disputes where the contested measure is a sweeping rule or blanket exclusion (e.g. "all trans people must use single-sex facilities corresponding to birth sex", "all applicants must produce a GRC", "no trans women on women's committees") rather than an individualised decision. Quila grounds the argument that a wide-net rule is disproportionate where narrower alternatives were not seriously considered and the evidential base is thin. Tier 2 proportionality authority: cite alongside Bank Mellat on methodology and Huang on the four-question structure.