What was the cup for???

Photograph of a parade at Hermitage has been to and fro between Taff Richards and myself.  We know the two on the extreme left of the  photograph…WO 2 Pat Petty (SSM of B Sqn), and myself. We are pretty sure that the recipient of the medal is  one WO 2 Bob Laidlaw. The two officers behind the Inspecting Officer would have been Col Collins with the Adjt Capt Hardy. It would probably have been spring 1950. Big question….

What was the cup for?????? Any ideas…..Nick Carter

With thanks to Nick Carter  for this contribution.