“... I do not consider that the appellant can have it both ways. It seems to me that once a court is invited to make a decision upon jurisdictional fact it can do no more than apply the balance of probability to the issue without resorting to the concept of discharge of the burden of proof. In my view a distinction needs to be made between a legal burden of proof, on the one hand, and a sympathetic assessment of evidence on the other. I accept that in evaluating the evidence it may well be inappropriate to expect from the appellant conclusive evidence of age and circumstances in which he has arrived unattended without original identity documents. The nature of the evaluation of the evidence will depend upon the particular facts of the case”
‘In the case of the question of jurisdictional fact, it is absolutely clear that although the relevant public authority has to enquire into the facts, if its decision as to those facts is wrong, it cannot give itself a jurisdiction which it does not have and cannot, as a result of that decision, decline a jurisdiction which it does have. That does not, however, mean that a local authority’s decision that a person is or is not a child for the purposes of theChildren Act 1989 is not susceptible to challenge on ordinary judicial review principles. In R (A) v Croydon LBC and R (M) v Lambeth LBC the Supreme Court recognised that the local authority had to make its own determination in the first place (see [33] and [54]). The fact that, in certain circumstances, a court is ultimately responsible for determining a matter, does not mean that in an appropriate case, where the court has identified a public flaw, it cannot remit the matter to the local authority.’