A N N E X MOST SECRET COPY NO. 72 REPORT OF INTER-SERVICES W/T SECURITY COMMITTEE ON THE USE OF WIRELESS IN THE UNITED KINGDOM (Reference: C.O.S.(43) 142, 28th April, 1943) In accordance with C.O.S.(43) 100th Meeting (0), Item 4, 12th May, 1943, the Inter-Services W/T Security Committee has carried out a review of the use of W/T in the United Kingdom, and the extent of the information which may be given away to the enemy from this source, and submits the following report to the Joint Intelligence Sub-Committee for the information of the Chiefs of Staff Committee.