REF ID:A60580 • • 4 

TOP SECRET EIDER 

'I'Gf 8£GRE'i'. EE*lR 

'I'D l?d!l ~ :EN l£S C>R'Q,.YJSE UI~ l&~;;&Q 

DGC/5271 • 

• 24th January, 1955. 

SIGINT RELATIONS WITH I 

C01rFERENCE WITII I fJ.rPRESENTATrvi§ ./!' L 8 6- 3 6 I 5 0 us c 3 6 0 5 

HELD IN LONDON NuvEf. /DECEMBERJ9'4;/ • EO 3 . 3 ( h) ( 2 ) 

I, INTRODUCTION0 

During a visit tol ./Ji.Ii S~ptember 1954,*DoN'oI, r\s\representative took the opportunity, with the concw:-:r;!ence/o.f Director\ G.C.H.Q. 

1md Direct"'" N S l\~,/t6 begin implementation o;f"/the arrangements in 

respect o lagreed at the LoS.I.:B/U.s.c.l.B. confe:r:ence on 

I . ........ I held in! July 1954. 

It was planned that discussion o.f.· .:f'tlrther and.· i.·.· /more d ... ·. etail. r \1IJ!D1 ementation should await a conference in London between U.:Ko and_ \ \ I 

representatives. This conf'eren,ce was held.ifrom 2 th Nov· mber to th 

December 1954 and was attend.~d by 

of G.C.H.Q. 

II. SECURITY, 

2. The I I tabled a printed d;rat't containing general De£ence 

Intetligence security instructio.·n· s .·with a narae:r···e;.· :ph stati~ .. that in· .. each_ I Department a special of£ice will be•set up to.handle \Secret 

intelligence and the results 0£/interceptiono The U.K. representatives expressed their surprise/and pleasure at 'the speed with which 

this security measure based on .U.K. ractice had been assimilated 

initiated. 

3. The question was raised 0£ the I !employed in theJ ! 

organi13e:t;ion. I . lvolunteered to provideetails and, pen ing O.K. 

reactionj not to./ shov them ecy- material received from us. 

PL 86-36/50 USC 3605 

IIL TECHNICAL RADIO AND EQUIPMENT MATTERS n 

4. Detailed dis.cussions· took pl-ace qn tecbni~l radio matters, in 

whilh thel ./ I again sh6wed their ·sound knowledge and ability. 

The lwere initiated into technical search, but revealed a lack 

of knowledge of • It was agreed that 

G&C.H.Q. should send them a paper on technical search. 

/50000000 

*Reported in DGC/4952. 

TOP SECRET EIDER 

.. , .,, .... 

Declassified and approved for release by NSA on 05-02-2014 pursuantto E.O. 1352a 
REF ID:A60580 . ' . .. 

TOP SECRE'f EtDE"R 

- 2-

• '.~PL 8 6-3 6/ 5 0 USC 3 605 

EO 3.3(h) (2) 

DGC/5~71 

5. The I lsotight info:nnat±on on what types o:f aircraft were 

suitable :for proving fligb.tsAmd whether s.uch aircraft could be \supplied 

to them. The U.K. representatives undertook toexe:Qd.ne their requirements lUld make recOllllllendations. The aid that (a) they we:re 

not allowed to make enetration flights• b the could occasional 

overf c the th ht that 

might prove p:ro:fitable. 

6. ~ riscussion took pl.ace on .typys of enuipm··· ent .req:. ui. red by the. I _ . organisation,, and/a list/ of_ I requirements was prepared for 

consideration by the U.K. and U.S. authorities. 

IV. CCMINT. 

7. The U.K. re7esentatiy;es eiexeed ta nrnvide ±he I \ 

\ _ lf'rom other 

stations. It was agreed that the :further.exchange of technical Com.int 

material should be developed slowly; the l.imits of; such exchange, in 

both directions,, were discussed and agreed. · 

8. A di.scussion to.ok place on the type o:f material whi.ch might be 

AXQhnnTed over the proposed U.K.~ fcommunications channel. The I :emphasised /that the number of of:ficers who• would be authorised 

to handle such traffic would be strictly limited and that groupage should 

be kept to a low level. 

V. CONCLUSIONS. 

9. The diiacussions were most cordial. In the final siage J I 

expressed the hope that cooperation between the U'.K. and J lw~ be developed to the extent that traffic could be supplied by the U.K. 

1:md clore coordination of cover could be achieved. In view of I ! restrictions within their orm organisation of knowledge of 

cooperation with the U.K.,, it is however not clear how such traf:fic 

could be hl!Uldled by them; and this suggestion will be given further 

consideration by the U.K. before any action is taken. 

10. Since the conference, by agreementc bDirect·. or G ....• c.H.Q. and 

Director N.S.A. the U.K. has provided th with certain limited 

information which will assist them to main a n e continUity o:f their 

interception after the 1st Jl!Uluary 1955 change in the I • I 

system. 

PL 86-36/50 USC 3605 

TOP S£CR£T EIDER