Thank you everyone. In answer to the questions:
I am researching the Reuters Roll of Honour which I initially found online. It simply said "H. Timmins".
I had a few men I was struggling to identify so I got in touch with Reuters and they sent me a copy of the RoH from their Staff Bulletin/magazine. The magazine gives each man's Initial, Surname and Regiment so has been a huge help. As far as Timmins is concerned though it simply says "Cyclist Corps" under Regiment Name.
I thought with a name like Timmins it would be straightforward especially when I've identified Smiths in the past
The 1911 census hasn't really helped because I can't find a match with a suitable occupation so I'm assuming Timmins was still at school when the census was taken.