asked the Secretary of State for War whether any decision has yet been come to as to the form of expression of regret and appreciation to be sent to relatives of the forces killed on active service?

In addition to the Departmental communication which is made to the next-of-kin, a Royal Message of Condolence is sent in cases of death by enemy action.

Should there not be some more formal expression or certificate such as was granted in the last war?

That matter is under consideration.