“We do not consider that the lack of awareness of Dina Foods Limited of the penalty regime is capable of constituting a special circumstance. In any event, having considered the evidence of the information provided by HMRC concerning the introduction of PAYE and NIC penalties, we are of the view that no reasonable employer, aware generally of its responsibilities to makle timely payments of PAYE and NIC amounts due, could fail to have seen and taken note of at least some of the information published and provided by HMRC.”