“19(1) A person may appeal against a decision of HMRC that the person is liable to a penalty under this Schedule. (2) A person liable to a penalty under this Schedule may appeal against a decision of HMRC as to the amount of the penalty.”
“20(1) An appeal under paragraph 19 is to be treated in the same way as an appeal against an assessment to the tax concerned (including by the application of any provision about bringing the appeal by notice to HMRC, about HMRC's review of the decision or about determination of the appeal by the First-tier Tribunal or Upper Tribunal).”
“(3) In a case where HMRC are required to undertake a review under section 83C— (a) an appeal may not be made until the conclusion date, and (b) any appeal is to be made within the period of 30 days beginning with the conclusion date.”
“(6) An appeal may be made after the end of the period specified in subsection (1), (3)(b), (4)(b) or (5) if the tribunal gives permission to do so.”