WW1 Medal Rolls

[Mark-R]

I have been searching the medal rolls on the national archive for any information on my grandfather "Gunner William Perkins 44134 R.F.A 34th D.A.C B.E.F" The information is from his ID badge. When I enter the information on the quick search 1000's of William Perkins' turn up so I tried the advanced search, put in his number, regiment etc and get nothing!
Can anybody help?!

p.s. Here is a photograph of him with a mate.

[Mark-R]

The photograph hasn't worked and I don't know why! Can anybody help with this as well??