Kieran Poynter identifies the costs of his investigation into the chain of events leading to the loss of child benefit data in October 2007 at Appendix A of the final report of his “Review of information security at HM Revenue and Customs”. A copy of the report is available in the Library of the House.
With regard to the costs associated with data security enhancements at HMRC, I would refer the hon. Member to the statement made by my right hon. Friend the Chancellor on 25 June 2008, Official Report, column 287.