This photo was part of a collection that my Mum found of her family. The only thing that I know about it is that my maternal grandfather John Graham (born 1910) is on the back row, second from the left. He was born in Glasgow, and after a short spell living in Ireland when he was an infant, stayed in Govan and Pollock in Glasgow.
I do not know if this is Army, Navy or Airforce and whether he served in the Second World War. Any ideas or where I might find out more?