1961 Washington area.
   Wrights briefing on RAFTER had not gone smoothly as some CIA officers
   were extremely pissed off that there had been a 3 year gap before they
   were indoctrinated.
   "Who else knows about RAFTER?,asked (the CIA's) Harvey.
   I told him we briefed the FBI and the Canadian RCMP fully as we
   progressed.
   "The Canadians!",exploded Harvey,thumping the table in anger."You might
   as well tell the fuckin' Papuan's as the Canadians."
   "I'm afraid we don't see it like that.The Canadians are trusted members
   of the Commonwealth."
   (I may go there to Kamloops for a holiday after the trial,btw.)
   "Well you should tell them to get another cipher machine,'he said as
   Angleton kicked Harvey hard under the table."
   Could have been Rosa Kleb I guess he was lucky.
   p151.Spycatcher.peter Wright.
   What were they using then? No point Hagelin I guess...
   [1]http://www.fortunecity.com/meltingpot/canada/1034/
   >>One of Peter Wright's successes was in listening to (i.e. bugging)
   the actions of a mechanical cipher machine, in order to break their
   encryption. This operation was code-named ENGULF, and enabled MI5 to
   read the cipher of the Egyptian embassy in London at the time of the
   Suez crisis. Another cipher-reading operation, code-named STOCKADE,
   read the French embassy cipher by using the electro-magnetic echoes of
   the input teleprinter which appeared on the output of the cipher
   machine. Unfortunately, Wright says this operation "was a graphic
   illustration of the limitations of intelligence" - Britain was blocked
   by the French from joining the Common Market and no amount of bugging
   could change that outcome.
   Particularly interesting is MI5's invention code-named RAFTER, which is
   used to detect the frequency a radio receiver is tuned to, by tracing
   emissions from the receiver's local oscillator circuit. RAFTER was used
   against the Soviet embassy and consulate in London to detect whether
   they were listening in to A4-watcher radios. Wright also used this
   technique to try to track down Soviet "illegals" (covert agents) in
   London who received their instructions by radio from the USSR. <<
   FROM
   [2]http://www.five.org.uk/security/mi5org/spycatch.htm

References

   1. http://www.fortunecity.com/meltingpot/canada/1034/
   2. http://www.five.org.uk/security/mi5org/spycatch.htm