“It seems to me that pending a decision by the Secretary of State on whether the further representations constitute a fresh claim, the Secretary of State will not be bound in every case to provide support under Section 4 where the other requirements of that Section are met. In my view it will be open to him, or to NASS, to decline to do so, for example on the grounds that the further representations are manifestly unfounded, or merely repeat the previous grounds or do not disclose any claim for asylum at all. … A public body required to decide whether the provision of support is necessary for the purpose of avoiding a breach of Convention rights will not in every case be required to treat further submissions as a sufficient basis for the provision of support pending a decision by the Secretary of State that they do not constitute a fresh claim.”