“81. When considering a "reasonable excuse" defence, therefore, in our view the FTT can usefully approach matters in the following way: (1) First, establish what facts the taxpayer asserts give rise to a reasonable excuse (this may include the belief, acts or omissions of the taxpayer or any other person, the taxpayer's own experience or relevant attributes, the situation of the taxpayer at any relevant time and any other relevant external facts). (2) Second, decide which of those facts are proven. (3) Third, decide whether, viewed objectively, those proven facts do indeed amount to an objectively reasonable excuse for the default and the time when that objectively reasonable excuse ceased. In doing so, it should take into account the experience and other relevant attributes of the taxpayer and the situation in which the taxpayer found himself at the relevant time or times. It might assist the FTT, in this context, to ask itself the question "was what the taxpayer did (or omitted to do or believed) objectively reasonable for this taxpayer in those circumstances?" (4) [Not relevant to a VAT surcharge]”
“The correct approach is to determine whether the penalty goes beyond what is strictly necessary for the objectives pursued by the default surcharge regime, as discussed in detail in Total Technology and whether the penalty is so disproportionate to the gravity of the infringement that it becomes an obstacle to the achievement of the underlying aim of the directive which, in this context, we have identified as that of fiscal neutrality.”
“Where an appeal is against an HMRC decision which depended upon a prior decision taken in relation to the appellant, the fact that the prior decision is not within section 83 shall not prevent the tribunal from allowing the appeal on the ground that it would have allowed an appeal against the prior decision.”