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Appendix 3 - GCHQ Organisation In 1946<br />

Principal Establishment<br />

Officer<br />

Edmund Wilson<br />

Director<br />

Edward Travis<br />

LSIB & LSIC<br />

Secretary Clive Loehnis<br />

Senior Deputy Director<br />

Nigel de Grey<br />

Deputy Director (Liaison)<br />

Edward Hastings<br />

I<br />

Technical Group<br />

- Claude Daubney ----------- Overseas Stations<br />

Allocating interception duties / Communications<br />

I<br />

I<br />

f----<br />

Traffic Analysis & Task Control Group<br />

Hamish Blair-Cunninghame<br />

Analysis of patterns in signals traffic<br />

Cryptanalysis Group<br />

r- John Tillman<br />

Attacks on foreign communications & cyphers<br />

Intelligence Group<br />

r- Nigel de Grey Whitehall Customers<br />

Intelligence analysis & provision to customers<br />

Cypher Security Group<br />

~<br />

T.R.W. Burton Miller 1------------ Cypher Policy Board<br />

Protection of British communications & cyphers

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