Aft PO’s Canterbury

Spot the Communicators?  What Year?  Click on image to enlarge.

POEW Martin Evans in the middle by the table.  With careful deduction the photo would have been taken between 1976 and 1980 due to khaki dress still being worn.  Also Marty was a Killick on Otago in 1976.  I think sitting on the rear bunk 2nd from left maybe Jim Bettridge.