BP staff selection, now over 2000 personnel at BP, correspondence with Cambridge...

HW 14/52

1942 Sept 11-20

BP staff selection, now over 2000 personnel at BP, correspondence with Cambridge University, WF Clarke to be retained after age 60; WRNS postings; investigations into cases of careless talk by BP employees; meeting on proposed German language school for GCCS Sept 21; second meeting of liaison officers chaired by AGD to evaluate BJ-series reporting; Lt Col Sayer to chair meeting on DF policy, map of UK Sigint stations, BP comments on proposed expansion of WOYG DF network; paper by Gordon Welchman of Hut 6 on his proposals for reorganisation involving 6 IS and forming of a Coordination Section headed by Col Sayer; candidates for next Sigint course at 50 Sigs Depot, grounded RAF air gunners remustered to Sigint trade and posted to 50 Sigs Depot for training; privilege dinners for staff remaining at BP after duty hours; minutes of BPCC meeting, notes on Sigint links to overseas; AS report on Research and Exploitation Aug 15 - Sept 15; list of prefixes, telegraphic addresses, priority indicators and cypher discriminants in force at BP as at Sept 11, alphabetical list of all E keys in use as at Aug 1942, BP working aid on German Army and AF cyphers; order from EWT to Hut 3 DOs forbidding future general reporting in EP of gossipy-type information on senior German officers, in future such reports to be sent only to C and EWT; paper by HAS on retaining 6 IS weekly report within BP, considered too sensitive to be sent to customers and stations; list of all AS personnel cleared to handle Ultra; AM dissatisfied with standards of Type X personnel and equipment at BP, BP replies; suggested cover for Spanish AF and military W/T comms; plan for increasing Italian military cover at GPO stations; French Resistance decodes from AD (S) to MI-6 Sept 13 and 16; EWT expected in Washington on or about Sept 18, list of recent UKUSA correspondence for Aug/Sept taken by EWT on his visit Sept 17, letter from Major Stevens in Washington to Col Tiltman, Stevens includes example of cypher record keeping card he has devised and which has been accepted by US Sigint analysts, liaison with War and Navy Departments, exchanges between Dr Mc'Vittie visiting War Department in Washington since Aug 21 and BP, letters between AGD and Kendrick in Ottawa, Oliver Strachey to leave Canada Sept 18 for return to BP; Sigint related exchanges with Capt Shaw (RN) in Kilindini, with GOC-in-C West Africa, with South Africa, Australia AM and WO; correspondence with CBME, Director CBME Lt Col FH Jacob resubordinated from 5 IS to MI-6 on Sept 17, BP note on future appointment of new Commandant 5 IS; exchanges with Col Crankshaw, British Sigint representative in Moscow, problems with Russian liaison, letters from Crankshaw to HAS and Col Tiltman thanking them for his successful visit to BP before returning to Moscow; distribution to Sigint authorities of POW interrogation reports, second interrogation of German Sigint officer, special precautions to avoid him communicating back to Germany; contents of Murder Bag of Sigint working aids issued by BP to 380 WU, AM establishments for 380 and 381 WUs; handling of Sigint, security classifications; Allied Paprika deception plan; plans for Operation Crucible Sept 23/24 Allied landings on Isle of Ushant; EWT to C giving details of message from Panzer Army to Berlin on Sept 8 answering question on E usage, this as a result of Berlin suspecting that Allies were exploiting E, Allied ME Commands alerted; CX/MSS/1391/T1, Panzer Army blames Italian POWs for giving away Axis battle plans which were in fact obtained from E; ZIP/ZTPG/73543 and CX/MSS/ZIP/ZTPG/73961, both sent by Hut 3 DO to C, Germans in Narvik area searching for illegal transmitter; BJ report 109008, Italian agent tours ME countries June 24 - July 26; EX/SALU 9, GAF recce of Western Med since Sept 1; CX/MSS/S21, prepared for C on German threat to Iran and Iraq

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