EWT to DMI May 2 with notes in preparation for DMI's visit to BP, DMI to C May 8...

EWT to DMI May 2 with notes in preparation for DMI's visit to BP, DMI to C May 8 requesting more Sigint on V1 Crossbow units; DDOD (I) May 9 on impending visit to BP; DD (Y) visits BP May 2 for discussions on Sigs 4 SW/831/1/1 Sigint DF and Sigs 4 SW/22/5/1 employment of ATS; DD (Y) to CSO (SW) May 10, station visits to be reduced in anticipation of D Day, all requests for station visits to go to MI-8 for DD (Y); May 2 Col Scott of SHAEF to SIB, EWT, Col Bicher and named officers at WO, AM and Admiralty, with proposals for introducing a SHAEF Sigint identity card for priority access when engaged on Sigint related duties, idea approved by EWT May 4; MI-8 agrees with DD 1 May 3 that details of GP radio network would not be released to Public Safety sub-section of SHAEF until GP comms closed down under Armistice terms; May 4 minutes of meeting May 3 with Gen Whiteley of SHAEF on DOE between US at Weymouth St and BP on processing of medium grade cyphers and feeding of intelligence to SHAEF and 21 AG; Col Bicher of ETOUSA to EWT May 4 with list of advantages and disadvantages for a combined UK/US medium grade party, amusing counter arguments by DD 1; chart prepared for EWT May 6 illustrating Y units in UK and number of sets targeted against medium grade cyphers, German military units in N France and radius of intercept for each Y station; EWT to Maj Gen Whiteley at SHAEF May 8 following visit of Col Bicher to BP, more discussions on processing of medium grade cyphers, Bicher reluctantly agrees to two separate parties at Weymouth St and BP; Col Scott at SHAEF to Brigadier ET Williams at HQ 21 AG May 8 re Sigint support for Western Front; Sixta to EWT May 7 giving 6 reasons for keeping processing of E and medium grade cyphers at same location, ie BP; minutes of discussions May 11 between Majors Brown of BP and Neff of ETOUSA on continuing problems with processing medium grade (non-indicator) cyphers in preparation for Overlord; meeting to be held May 14 at BP on preparations for Overlord with talks by representatives from all main sections, all key workers to attend; WTC to HCS Maine at HQ May 1 re comms circuits BP - Forest Moor, also to CSO (SW), Forest Moor to man an additional 36 sets during May; minutes of first WTC section weekly meeting of May 1, Wallace and Crankshaw to visit Knockholt early May, minutes of second meeting May 8; WTC to DD 1 May 2 re functions of BP liaison officer with Y stations, (John de Grey), asks for advice on Naval stations; trial of GP cover at Forest Moor May 2; WTC results of reception comparison tests Apr 27-29 between Chicksands and Forest Moor May 5; WTC to EWT May 5 re reception problems with Croat, WTC arranges fortnight's trial at Forest Moor May 5; John de Grey to Sayer May 7 giving details of Chicksands' watches; letter of thanks May 8 from OC Beaumanor to WTC for talks by John de Grey to Beaumanor staff May 5/6; 12 printer circuits from Forest Moor to BP May 9, of which 9 for E; WTC to Sixta and Hut 6 asking for comments on performance of US station at Bexley Heath May 9, Major Carr of BP Comcen to WTC May 9 on state of printer circuits to Bexley Heath, evaluation of Bexley Heath May 10 for WTC by JS Colman, Sixta reports May 15 station well below required standard, WTC analysis of traffic taken at US site at Bexley Heath and comparison with intercept at UK stations May 13; notes by John de Grey May 9 following his visit to Whitchurch; WTC to GCWS Knockholt requesting weekly cover return and also details of non-morse cover at Wincombe May 9; WTC to Major Carr May 10 requesting increased landlines for Capel, WTC to John de Grey at Bishops Waltham on F tasking of Capel May 11; WTC reviews deception scheme of DD (AS) to pass disinformation on German comms networks May 11, sent by WTC to DD 1 May 12, rejected by DD 1; Lt Col Wallace of WTC to John de Grey May 12 omitting Knockholt from de Grey's program of visits, EWT rules all matters concerning FORDE or GCWS at Knockholt should in future be dealt with by Wallace personally; BP order on processing Fish from Knockholt signed by EWT May 12; more correspondence May 4 between C and GPO Chief Engineer re BP request for PO monitoring of Berlin - Tokio facsimile service, BP to pursue purchase of intercept equipment in US; May 9 JS Colman at BP to main UK stations giving procedure for reporting local interference on target frequencies, Colman to Sayer May 13 on case for putting more Beaumanor key staff in the know and thus allowing them to visit BP; DD 1 to C May 10 with first deception report for Col Bevan; paper by Lt Col Blair-Cunnynghame May 13 on advantages of having 2 receivers on each intercept position, extended by WTC to O/Cs UK Sigint stations, comments by John de Grey; May 13 Williams' evaluation for EWT of Sigint from PO coastal stations; May 14 additional printer circuits being installed between BP and stations for rapid sending of E intercept; Gp Capt Winterbotham at HQ to DD (AS) from C and EWT May 3, Russian met officer going to Iceland to study met conditions for proposed shuttle service Scotland - USSR, BP Met Section rep ordered to go to Dunstable to study met service to Iceland and ensure that the Russian would be unable to determine that UK was breaking German met cyphers; report of May 4 on AS visit to Kingsdown Apr 28 and discussions on Kingsdown Broadcast Carpenter Code, start of Kingsdown Broadcast May 8, AM suggests MAAF Algiers should monitor, useful data for 15th AF, SHAEF order on Kingsdown Sigint Broadcast May 15; Met Section Weekly Summary for May 1-6; May 8 list of 19 AS F tasks not covered in May because of lack of sets, with request for more positions, WTC to MI-8 May 14 on UK shortage of MF positions for W Front; AS takes over Spanish military processing May 9; minutes of meeting of May 12 on tasks of AS Operational Watch; Cheadle Sigint Broaadcast for AEAF May 3, chart showing flow of Sigint for AEF May 4, request from DCIO Sigint AEAF May 12 for one-time pads for 365, 382 and 383 WUs and for 3 Mobile Radio Sqn Detachments A, B and C; contents of Murder Bag for USAF Sigint detachment at Cheadle May 4; Chicksands' weekly cover return for w.e. Apr 29 and May 6, upgrading of Chicksands' printer links to BP May 13; Tean general search report for Apr dated May 3; details of move of GSI (s) 21 AG from Ilchester Place to Southwick May 14; Foynes Radio Eire report for w.e. May 5 and May 12; Hut 3 to EWT May 5 re naval intelligence from Fish; AM report of May 13 on German met station in E Greenland since Aug 1942, comments from Mc'Vittie of Met Section

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