“i) Making perverse or irrational findings on a matter or matters that were material to the outcome (“material matters”); ii) Failing to give reasons or any adequate reasons for findings on material matters; iii) Failing to take into account and/or resolve conflicts of fact or opinion on material matters; iv) Giving weight to immaterial matters; v) Making a material misdirection of law on any material matter; vi) Committing or permitting a procedural or other irregularity capable of making a material difference to the outcome or the fairness of the proceedings; vii) Making a mistake as to a material fact which could be established by objective and uncontentious evidence, where the appellant and/or his advisers were not responsible for the mistake, and where unfairness resulted from the fact that a mistake was made.”