“(1) The costs of and incidental to— (a) all proceedings in the First-tier Tribunal… shall be in the discretion of the Tribunal in which the proceedings take place. (2) The relevant Tribunal shall have full power to determine by whom and to what extent the costs are to be paid. (3) Subsections (1) and (2) have effect subject to Tribunal Procedure Rules.”
“It is said [in HMRC’s Statement of Case] that “no evidence has been provided about the different bases of payments before and after this change and there is therefore no evidence upon which to base a claim for this period before the change”