A v Home Secretary (No 2) [2005<nowiki></nowiki> UKHL 71] is a UK constitutional law case, concerning the rule of law.
Information obtained through torture of terrorist suspects by US armed forces and passed to UK officials had been presented to the Special Immigration Appeals Commission as part of the Crown's case to justify the indefinite detention in HMP Belmarsh of individuals suspected of offences related to terrorism.
The House of Lords held that evidence obtained or likely obtained by torture committed abroad by a foreign state's agents is inadmissible in proceedings before the Special Immigration Appeals Commission. This freed the 10 men from prison if no further evidence could be provided. Lord Bingham said the following.