INTERESTING PHOTO WW1

[Gil Boyd]

Its a very formal and carefully positioned shot though IMHO. Taken with what appears to be time on their hands, so I naturally went for Edinburgh Castle as they were all Scots and looked fairly relaxed.
Perhaps someone who was stationed there might recognise the doorway?? or could they be Black and Tans with no identification marks on their kit? The truth is out there, just finding the right person to see the photo.