GCCS Directorate paper on staff problems at BP, particularly recruiting and pay;...

HW 14/19

1941 Sept

GCCS Directorate paper on staff problems at BP, particularly recruiting and pay; paper from MI-8 to Director of Military Intelligence (DMI) highly critical of BP work, suggesting necessity for more London control of UK Sigint, paper from BP hitting back at MI-8; JCC minutes; division of effort (DOE) between Hut 6 and Traffic Office on Sigint from ME; Hut 6 problems as presented to EWT by G Welchman, including request for more Bombes, Jumbos, Mammoths and Quaggas, Hut 6 procedures; listing of UK Sigint intercept positions at home and abroad covering various German code systems, paper on potential of E efforts and evaluation of listings, detailed tables on cover and exploitation of German cypher systems; access to Hut 3; staff and tasks of RAF Section, also known as AS; contingency plans for GCCS party to deploy to GHQ Home Forces if Germans invade; grading and pay of GCCS staff; WRNS Admin Officer to be appointed to GCCS, EWT informed by Director WRNS; WRNS complement of Hut 11, totalling 220; support from BTM; HC Kenworthy reports to EWT on his visits to PO Y stations at Cupar and Brora; developments at PO stations Sandridge and Whitchurch, operators at Sandridge request more feedback on their intercepts; paper by FL Lucas giving evidence that Germans were reading Russian cyphers, suggests that Prime Minister would take a grave view of fact that Russians had not been informed 2 months after evidence had become available; proposal for Sigint Met Section to be taken over by RAF Sigint; police intercept station at Denmark Hill tasked with Russian KGB communications; Service comments on BP report on German SS; codewords for various Sigint sources when sent by Type X, census of Sigint Type X machines in UK, mainly at BP; assessments of named intercept operators; HC Kenworthy's memo to EWT on purchase of high speed recording equipment, Kenworthy's listing of commercial and diplomatic tasks at 6 PO stations in UK; Army Sigint stations in India to cover German and Russian targets in south-west Russia; liaison with Canada; list of captured German signals' documents handed over by Russia to British Military Mission in Moscow, UK Sigint effort against Russia to be run down; technical assessment of RE equipment, Naval Sigint station at Flowerdown using RE, RFP and Tina as analysis aids; moves to improve exploitation of French communications; use of Syko code in Bomber Command, weaknesses; paper on exploitation of German Faut code by Cheadle and SALU Section at BP; correspondence with CBME, Sigint reinforcements, BP case against establishing decoding centre in ME

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