A Class from the Past!

Here is an image of a class of Communicators. What was the course and can we name them and the year?  – 3rd Signalman’s Course 7 Jan – 12 March 1957.

Standing L – R   Sig Tom Rule,  Sig Dave Newman,  Sig Herb Anscombe

Sitting  L – R   POTel Geoff Drew, LTCDR E.G. Biggs, SLT Harry Alderton, Yeoman Jock McNeil