hi all
from what I can make out of the cap badge, it looks very much like the devonshire regt, it could be suffolks, but no flashes, or collar ensignia its hard to tell, may be a regular but even milita had long service chevrons, first 3yrs ignored so maybe a 12yr man, lanyard on left shoulder, he's no spring chicken, so if it is 1914 as we suspect I am suprised he has no boer war medal ribbons, sorry can't be of more help.
regards
paul stacey