The first, The Voice of the Nazi (1940), is a collection of eight essays about Nazi speeches, specifically Hitler's and Goebbels's, originally broadcast on the BBC in 1939 and 1940. This is the type of book never seen in the Canadian WC imprint.
The second is U-Boat in the Hebrides by A. Divine. The unnumbered third printing of the British WC dates from 1942 as does the first of two editions published in Canada.
White Circle B1 - 1942
White Circle 103 - 1943