Comrades

My job sometimes takes me into care homes, and on a recent visit to one I spotted this photo on the wall of a room. The resident wasn't in the room at the time, so I don't know who they are - one is possibly the resident's husband or brother. I assume that it was taken during or around WW2, and just thought it was a great photo. Anyone with more knowledge of bikes or military uniforms shed more light on it?