Jim Skardon and Henry Arnold, the MI5 officers who attended the brief trial in 1950
of Klaus Fuchs. Both had interrogated him and succeeded in extracting a confession
without revealing the VENONAsource.
The embarrassing newspaper article marking
the departure of MI5’s director-general, Sir
Percy Sillitoe, to Washington, D.C., in May
1951 following the defections of foreign
office diplomats Guy Burgess and Donald
Maclean.