Sooshi,
I've had a quick look at his medal record card but this doesn't give any indication of any awards although it does give his service number as 64463 not 604463! It also gives his unit as the 3rd North Staffordshire Regiment.
Your best bet would be to approach the National Archives using his service number to see what documents are available. If they have his sign up papers this should give next of kin, personal details, physical details, address etc.....
Found this on "The Long, Long Trail" website if it's of any use?
"3rd (Reserve) Battalion
August 1914 : in Whittington, Lichfield. A depot/training unit, it remained in UK throughout the war. Moved on mobilisation to Plymouth and in May 1915 to Seaham. Moved again in September 1915 to Forest Hall (Newcastle) for duty with the Tyne Garrison and moved in October 1916 to nearby Wallsend."
Also, I've found a reference to a James Wootton and plenty to Joseph but none of them refer to any Staffordshire Regiments so he could be any of them.
15432 James Wootton North Staffs Regiment
Sorry I can't be of much more help.
David