This is an appeal against a decision of the Immigration Appeal Tribunal (“the IAT”) given on 20 February 2003 when it allowed the Secretary of State's appeal against the determination of the Adjudicator promulgated on 10 July 2002. The Adjudicator had allowed the appellant's appeal against the decision of the Secretary of State, made on 26 April 2001, by which he refused the appellant leave to enter the United Kingdom. Permission to appeal to this court was granted by Pill LJ and Maurice Kay J on 26 June 2003, following earlier refusal by Kennedy LJ on 2 June 2003 on consideration of the papers only. I should add that shortly before the substantive hearing in this court the Terrence Higgins Trust (“the THT”) applied to intervene in the appeal. I directed that while the court would take account of the skeleton argument submitted by the THT, we would decide at the substantive hearing of the appeal whether or to what extent we wished to hear oral submissions on its behalf. In the event we received without objection certain further documentation from the THT but declined to hear oral argument from its counsel Ms. Webber. We are grateful for the documentary materials which the THT has provided.