Reverse of photo with names https://pbase.com/image/169788167
Chief is CCY Yule and I think the JI is probably Dutton
Mervyn Jones 4th from left back row. George Barker front row 3rd from right, above him centre row right is (Mick?) Kilby.
Back row left (Sharky) Ward. Barrie Wilson 2nd from right middle row.
George Barker front row 3rd from right.