The principal issues in the appeals concern the meaning and effect of Article 2(n) and Article 28 of Dublin III ("Article 2(n)" and "Article 28", respectively), which relate to the detention of an individual for the purpose of transfer to another Member State under that Regulation. Mr Hemmati and Mr Khalili also raise a distinct issue regarding whether Garnham J was right to hold that their detention was lawful by application of the usual principles of domestic law first adumbrated in Re Hardial Singh [1984] 1 WLR 704 and rehearsed in later authorities such as R (I) v Secretary of State for the Home Department [2002] EWCA Civ 888 and Lumba v Secretary of State for the Home Department [2012] 1 AC 245 ("the Hardial Singh principles").
