For the purposes of this response I have taken the question to refer to armed security contracts.
The use of private mobility and security companies for the static guarding of empty buildings is currently being considered.
I also refer my right hon. Friend to the answer I gave on 5 March 2007, Official Report, column 1657W, to the hon. Member for Old Bexley and Sidcup (Derek Conway). No contracts are currently being negotiated between MOD and private military and security companies for services in Iraq.