Thanks Neil,
It seems Pte 376870 Samuel Barnes was the best bet. Enlisted 10th Bttn 11/12/1915. 2/10th Manch. Regt. 4840 Pte., 1/10th Manch. Regt. 376870, 8th (Res) Manch. Rgt. 376870, Royal Defence Cps. 88299, 3rd Manch. Regt. 376870. Dischargerd SWB 31/7/1919. His Pension Card says he had VDH, resident 17 Ripon Street, Oldham. Samuel was born 1889, so too old to be the chap in the image in my opinion. I will have another look at the other candidates.