“Sections 9 and 10 provide powers for the First-tier and Upper Tribunals to review their own decisions without the need for a full onward appeal and, where the tribunal concludes that an error was made, to re-decide the matter. This is intended to capture decisions that are clearly wrong, so avoiding the need for an appeal. The power has been provided in the form of a discretionary power for the Tribunal so that only appropriate decisions are reviewed. This contrasts with cases where an appeal on a point of law is made, because, for instance, it is important to have an authoritative ruling.”