“20. I remind myself at this stage that an appeal from the UT to this court lies only on a question of law. It is not the function of this court to substitute our view of proportionality for that of the UT unless and until an error of law is shown. The correctness or otherwise in law of the Tribunal’s decision is to be judged on the basis of the statutory provisions then applicable. … 35. … If this court were to accept that there had been an error of law by the UT it would then be appropriate to take the decision ourselves. In that event, as Mr Westgate accepted,section 117C of the Nationality, Immigration and Asylum Act 2002 , inserted by theImmigration Act 2014 with effect from28 July 2014 , would apply…”
“12. … It is understandable that a judge hearing an application for judicial review should think that he is undertaking a review of the Secretary of State’s decision in accordance with normal principles of administrative law, that is to say, that he is reviewing the decision-making process rather than the merits of the decision. In such a case, the court is concerned with whether the Secretary of State gave proper consideration to relevant matters rather than whether she reached what the court would consider to be the right answer. But that is not the correct approach when the challenge is based upon an alleged infringement of a Convention right… … 14. The other side of the coin is that, when breach of a Convention right is in issue, an impeccable decision-making process by the Secretary of State will be of no avail if she actually gets the answer wrong. This was the basis of the decision of the House of Lords in Huang v Secretary of State for the Home Department[2007] 2 AC 167 , in which the question was whether the removal of a migrant would infringe his right to respect for family life under article 8…”
“… is whether the Secretary of State has acted incompatibly with the Convention rights of these particular young people. By reason ofsection 6(1) of the Human Rights Act 1998 , it is unlawful for her to do so. This is subject to section 6(2), where a public authority is acting, to put it loosely, in compliance with primary legislation which cannot be read or given effect in any other way. This is not this case. The Secretary of State has acted in compliance with her own Immigration Rules, which do not even have the status of delegated legislation: see Odelola v Secretary of State for the Home Department[2009] UKHL 25 ,[2009] 1 WLR 1230 . She does have a choice and it is her duty to act compatibly with the Convention rights of the people with whom she is concerned. Of course, where delicate and difficult judgments are involved in deciding whether or not she has done so, this Court will treat with appropriate respect the views taken by those whose primary responsibility it is to make the judgments in question. But those views cannot be decisive. Ultimately, it is for the court to decide whether or not the Convention rights have been breached: R (SB) v Governors of Denbigh High School[2006] UKHL 15 ,[2007] 1 AC 100 ; Belfast City Council v Miss Behavin’ Ltd[2007] UKHL 19 ,[2007] 1 WLR 1420 .”