“14. In light of this material we consider the following observations are justified concerning the nature of the tribunal’s appellate jurisdiction: (1) The tribunal’s task is not a judicial review of the Commissioner’s decision on the principles that would be followed by the Administrative Court in carrying out a judicial review of a decision by a public authority (contrast the jurisdiction relating to national security certificates under section 60(3), which is expressly on a judicial review basis). The statutory jurisdiction under section 58 is substantially wider. (2) The tribunal does not start with a blank sheet. The starting point is the Commissioner’s notice. But analogy with the Court of Appeal is not apt. The Court of Appeal only hears fresh evidence in special circumstances. By contrast, subject to limited exceptions, the tribunal is required to receive relevant evidence, documents and information from the parties to the appeal, and the material is not limited to that which was available to the Commissioner. (3) In considering whether the Commissioner’s notice is in accordance with the law, the tribunal must consider whether (in the present context) the provisions of FOIA have been correctly applied. The tribunal is not bound by the Commissioner’s views or findings but will arrive at its own view. In doing so it will give such weight to the Commissioner’s views and findings as it thinks fit in the particular circumstances. (4) In some cases the correct application of the provisions of the Act will depend upon the findings of fact. Where facts are in dispute, the tribunal may review any finding of fact by the Commissioner. The tribunal will reach its conclusions on the factual issues upon the whole of the material which is properly before it on the appeal. Having decided the factual issues, the tribunal must consider the correct application of the provisions of the Act to the facts as found. It is therefore possible that in some cases the tribunal will consider that the Commissioner’s notice is not in accordance with the law, not because of any error of legal reasoning in the notice, but because the tribunal, having received evidence at the appeal hearing, makes findings of fact which are different from those made by the Commissioner. (5) In some cases the dispute on appeal will be on the public interest test in s2(2)(b), namely, whether the public interest in maintaining a qualified exemption outweighs the public interest in disclosing the information. Adjudging the balance of public interest involves a question of mixed law and fact, not the exercise of discretion by the Commissioner. If, based either on the Commissioner’s original findings of fact or on findings made by the tribunal on fresh evidence, the tribunal comes to a different conclusion from the Commissioner concerning the balance of public interest, that will involve a finding that the Commissioner’s notice was not in accordance with the law and should be corrected. (6) The combination of the power to review findings of fact and the duty under the rules to receive evidence on the appeal does not predetermine the extent of the tribunal’s review of the facts. This will depend upon the circumstances of the case. If in a particular case no fresh evidence is adduced, or the tribunal considers that the fresh evidence is not of material significance, the tribunal will proceed on the basis of the facts found by the Commissioner. (7) While it is not necessary for the purposes of the present case to consider the situation where the notice involved an exercise of discretion by the Commissioner, we incline to the view that in such a case the tribunal must form its own view on how the discretion ought to have been exercised. Review of the merits of the Commissioner’s exercise of discretion is assisted by the presence of lay members on the tribunal. Again, the tribunal’s decision may be affected by findings of fact which differ from those made by the Commissioner.” (1) The tribunal’s task is not a judicial review of the Commissioner’s decision on the principles that would be followed by the Administrative Court in carrying out a judicial review of a decision by a public authority (contrast the jurisdiction relating to national security certificates under section 60(3), which is expressly on a judicial review basis). The statutory jurisdiction under section 58 is substantially wider. (2) The tribunal does not start with a blank sheet. The starting point is the Commissioner’s notice. But analogy with the Court of Appeal is not apt. The Court of Appeal only hears fresh evidence in special circumstances. By contrast, subject to limited exceptions, the tribunal is required to receive relevant evidence, documents and information from the parties to the appeal, and the material is not limited to that which was available to the Commissioner. (3) In considering whether the Commissioner’s notice is in accordance with the law, the tribunal must consider whether (in the present context) the provisions of FOIA have been correctly applied. The tribunal is not bound by the Commissioner’s views or findings but will arrive at its own view. In doing so it will give such weight to the Commissioner’s views and findings as it thinks fit in the particular circumstances. (4) In some cases the correct application of the provisions of the Act will depend upon the findings of fact. Where facts are in dispute, the tribunal may review any finding of fact by the Commissioner. The tribunal will reach its conclusions on the factual issues upon the whole of the material which is properly before it on the appeal. Having decided the factual issues, the tribunal must consider the correct application of the provisions of the Act to the facts as found. It is therefore possible that in some cases the tribunal will consider that the Commissioner’s notice is not in accordance with the law, not because of any error of legal reasoning in the notice, but because the tribunal, having received evidence at the appeal hearing, makes findings of fact which are different from those made by the Commissioner. (5) In some cases the dispute on appeal will be on the public interest test in s2(2)(b), namely, whether the public interest in maintaining a qualified exemption outweighs the public interest in disclosing the information. Adjudging the balance of public interest involves a question of mixed law and fact, not the exercise of discretion by the Commissioner. If, based either on the Commissioner’s original findings of fact or on findings made by the tribunal on fresh evidence, the tribunal comes to a different conclusion from the Commissioner concerning the balance of public interest, that will involve a finding that the Commissioner’s notice was not in accordance with the law and should be corrected. (6) The combination of the power to review findings of fact and the duty under the rules to receive evidence on the appeal does not predetermine the extent of the tribunal’s review of the facts. This will depend upon the circumstances of the case. If in a particular case no fresh evidence is adduced, or the tribunal considers that the fresh evidence is not of material significance, the tribunal will proceed on the basis of the facts found by the Commissioner. (7) While it is not necessary for the purposes of the present case to consider the situation where the notice involved an exercise of discretion by the Commissioner, we incline to the view that in such a case the tribunal must form its own view on how the discretion ought to have been exercised. Review of the merits of the Commissioner’s exercise of discretion is assisted by the presence of lay members on the tribunal. Again, the tribunal’s decision may be affected by findings of fact which differ from those made by the Commissioner.”