Security of Communications with Berlin. Note by D.D.M.I.

only at intervals of 9 to 11 days, information will often be stale if held up. The only satisfactory alternative to air mail would be an increased King's Messenger Service but, in view of the Foreign Office's own practice in the matter, it is doubtful whether they would increase the service unless goods and sufficient reasons for so doing are put forward. I would therefore suggest that the views of the Joint Intelligence Committee be obtained on:(a) The desirability of pressing for a more frequent bag service (not less than once a week); (b) The categories of correspondence which should not be sent by air.