HMRC sends 18,500 fines to wrong address HMRC has sent 18,500 fines to the wrong address with a software error said to be to blame for the fiasco, the Sunday Times reports. Accountants have reported finding demands for multiple taxpayers when opening envelops addressed to another taxpayer, with private codes and other reference numbers included in the correspondence. In a letter to the Association of Taxation Technicians, HMRC said: “We sincerely apologise and recognise that this is not in line with our Charter standards. We take all aspects of protecting data very seriously so there has been a lot of activity to understand this incident and mitigate future risks.” HMRC said it had taken urgent action to ensure the data breach did not happen again: “If any agents receive any correspondence for incorrect clients, we would ask that they return them to HMRC.”