basic requirements of a fair trial: Garcia Alva v Germany (2001) 37 EHRR 335; R (West) v Parole Board, R (Smith) v Parole Board (No 2) [2005] UKHL 1, [2005] 1 WLR 350. Sensibly, therefore, the parties are agreed that the applicability of article 6 should be left open and the issue resolved on the premise that article 5(4) applies. 26. The Secretary of State submits that under the Convention the admissibility of evidence is a matter left to be decided under national law; that under the relevant national law, namely, the 2001 Act and the Rules, the evidence which the Secretary of State seeks to adduce is admissible before SIAC; and that accordingly the admission of this evidence cannot be said to undermine the fairness of the proceedings. I shall consider the effect of the statutory scheme in more detail below. The first of these propositions is, however, only half true. It is correct that the European Court of Human Rights has consistently declined to articulate evidential rules to be applied in all member states and has preferred to leave such rules to be governed by national law: see, for example, Schenk v Switzerland (1988) 13 EHRR 242, para 46; Ferrantelli and Santangelo v Italy (1996) 23 EHRR 288, para 48; Khan v United Kingdom (2000) 31 EHRR 1016, para 34. It has done so even where, as in Khan, evidence was acknowledged to have been obtained unlawfully and in breach of another article of the Convention. But in these cases and others the court has also insisted on its responsibility to ensure that the proceedings, viewed overall on the particular facts, have been fair, and it has recognised that the way in which evidence has been obtained or used may be such as to render the proceedings unfair. Such was its conclusion in Saunders v United Kingdom (1996) 23 EHRR 313, a case of compulsory questioning, and in Teixeira de Castro v Portugal (1998) 28 EHRR 101, para 39, a case of entrapment. A similar view would have been taken by the Commission in the much earlier case of Austria v Italy (1963) 6 YB 740, 784, had it concluded that the victims whom Austria represented had been subjected to maltreatment with the aim of extracting confessions. But the Commission observed that article 6(2) could only be regarded as being violated if the court subsequently accepted as evidence any admissions extorted in this manner. This was a point made by my noble and learned friend Lord Hoffmann in the much more recent devolution case of Montgomery v H M Advocate, Coulter v H M Advocate [2003] 1 AC 641, 649, when he observed: “Of course events before the trial may create the conditions for an unfair determination of the charge. For example, an accused who is convicted on evidence obtained from him by torture has not had a fair trial. But the breach of article 6(1) lies not in the use of torture -15-