Photo received from Gordon Randall via Henry Ching:
Gordon's father, a member of the HK Eurasian community, was Benjamin Cutler Randall.
Unfortunately, he can give us no information on the photo, other than it is a postcard he found in his father’s papers. His father was in the Police Reserve in 1941, and so he assumes that the photo is of the Police Reserve although his father does not appear to be in it.
I have identified the background building as Police Headquarters. The civilian sitting in the centre of the front row I am unable to identify, but the uniformed man to the right of him (i.e sitting on his left) looks like the Commissioner of Police, Pennefather Evans. The CO of the Police Reserve appointed in 1936 was Deputy Superintendent C. Champlin and perhaps he is sitting on the other side of the civilian.
Two interesting features – there appear to be an unusual number of sergeants, and those sitting seem to be wearing a different uniform without metal buttons, and their cap badges are different from the standing men. Perhaps they were officers – i.e inspectors and above.