The latest audited data available on overnight accommodation was set out in the answer I gave the hon. Member on 11 July 2007, Official Report, columns 1485-86W.
Since 1999, the Government have published on an annual basis a list of all overseas visits by Cabinet Ministers costing in excess of £500, as well as the total cost of all ministerial travel overseas. Copies of the lists are available in the Libraries of the House. All travel is undertaken in accordance with the “Civil Service Management Code” and the “Ministerial Code”.