There have been no further losses following the answer I gave on 3 November 2008, Official Report, column 14W, namely that since June 2007 one laptop has been reported stolen from the Leader of the House of Commons Office. The laptop was used to update the office website and did not contain any personal data or other sensitive information. No data have been lost.
Following a machinery of government change, information prior to 2006-07 is available only at disproportionate cost.