(1)Subject to the following provisions of this section, an appeal shall lie to an appeal tribunal with respect to any of the following decisions—
(a)any decision by the Commissioners on a review under section 40 above (including a deemed confirmation under subsection (8) of that section);
(b)any decision by the Commissioners on any such review of a decision referred to in section 40(1) above as the Commissioners have agreed to undertake in consequence of a request made after the end of the period mentioned in section 40(3) above.
(2)Where an appeal under this section relates to a decision (whether or not contained in an assessment) that an amount of aggregates levy is due from any person, that appeal shall not be entertained unless—
(a)the amount which the Commissioners have determined to be due has been paid or deposited with them; or
(b)on being satisfied that the appellant would otherwise suffer hardship—
(i)the Commissioners agree, or
(ii)the tribunal decide,
that it should be entertained notwithstanding that that amount has not been so paid or deposited.
(3)On an appeal under this section relating to a penalty under paragraph 7 of Schedule 6 to this Act (evasion), the burden of proof as to the matters specified in paragraphs (a) to (c) of sub-paragraph (1) of that paragraph shall lie upon the Commissioners.