“Subject to sections 83G and 84, an appeal shall lie to the tribunal with respect to an assessment under section 73(1) or (2) in respect of a period for which the appellant has made a return under this Act or the amount of such an assessment.”
“grounds for appeal made under the provisions of section 73(6)(b) VATA 1994 applies where, and in accordance to section 71(1) VATA 1994 “Where a person has failed to make any returns required under this Act (or under any provision repealed by this Act)”
“83(1) (p) an assessment— (i) under section 73(1) or (2) in respect of a period for which the appellant has made a return under this Act; or (ii) under subsections (7), (7A) or (7B) of that section; or the amount of such an assessment;”