"This is a permission hearing: I have to consider whether the proposition that is made on behalf of both these young people is an arguable proposition -- that is, that it is reasonably arguable that the local authority should be treated as having provided accommodation under Section 20 when they came to know of the circumstances of accommodation by the Housing Department, but knew also of the circumstances giving rise to an obligation to house under Section 20. In my judgment, considering the terms of paragraph 44 and the demarcation clearly set out in that case, it is not reasonably to be attributed to the action of the social services department that the accommodation either of these 2 claimants was underSection 20 of the Children Act 1989 "