It would be inappropriate to comment on this as there is an ongoing police investigation.
On 20 November the Chancellor announced an independent review of HMRC's security processes and procedures for data handling led by Kieran Poynter, the chair of PricewaterhouseCoopers.
The full terms of reference for that review are available on the HM Treasury website at: http://www.hm-treasury.gov.uk/newsroom_and_speeches/press/2007/press_133_07.cfm and a copy has been placed in the Library of the House.
The following companies handle outgoing mail for HM Revenue and Customs (HMRC):
Royal Mail;
TNT UK Ltd.;
Lynx Express Ltd.;
The DX Group Ltd.; and
G4S Ltd.