Famous 6th Border Regt Photo Somme

[HarryBettsMCDCM]

I am sure that many of you will be very familiar with this famous Photograph of a group of 6th{S}Bn; Border Regiment Men & a Senior NCO{WO},relaxing amid the detritus of their trench & dugouts,that has apeared in virtually every book published since the end of the Great War,with varying attributations, as representative of the conditions in the front line,I am wondering if this band of brothers has ever been identified by name especially the Warrant Officer?[in the Soft Cap]If so I would very much like to learn of His/Their Names.