"Schedule 4 to the 1999 Act (appeals), to the extent (and with the modifications) set out in Schedule 2 to these Regulations, has effect in relation to appeals to the adjudicator under these Regulations."
" Determination of Appeals 21(1) On an appeal to him under Part IV, an adjudicator must allow the appeal if he considers – (a) that the decision or action against which the appeal is brought was not in accordance with the law or with any immigration rules applicable to the case, or (b) …. but otherwise must dismiss the appeal."
"(9) Part IV [of the 1999 Act] has effect subject to any regulations made under this section."
"(3) In considering – (a) any ground mentioned in section 69, or (b) any question relating to the appellant's rights under Article 3 of the Human Rights Convention the appellate authority may take into account any evidence which it considers to be relevant to the appeal (including evidence about matters arising after the date on which the decision appealed against was taken). (4) In considering any other ground, the appellate authority may take into account only evidence – (a) which was available to the Secretary of State at the time when the decision appealed against was taken; or (b) which relates to relevant facts as at that date."