The Japanese arrested Selwyn-Clarke on 2 May 1943, and subjected him to 19 months of solitary confinement, which included 10 months of repeated tortures in an attempt to get him to confess to a list of 40 charges, including that he was the head of British espionage in Hong Kong.
On May 2nd, 1943, the Japanese apprehended Selwyn-Clarke and imprisoned him for 19 months in solitary confinement. During this time, they subjected him to repeated torture for 10 months in an effort to force a confession about 40 charges, including that he was the leader of British espionage operations in Hong Kong.