Today I came across this website - Soldiers of the Queen - a virtual museum of British Military photographs and research.
Interesting site of British soldiers wherever they served, India, Canada, Africa, Egypt, Australia and New Zealand, West Indies, etc, and of course at home.
I like the site design, and it is easy to navigate.
Some of the photos are unidentified... perhaps you will find your ancestor here? Go on over and take the tour - admission is free to this museum!