Thank you Margaret, there's plenty of RC's on here with far more knowledge than I. There's a good chance you will have the answers you need in time. 10/ Royal Fusiliers, a London Regiment, doesn't seem to have any relevance, was on Western Front.
However, I have found something intriguing. The Manchester Regiment, 52nd (Graduated) Battalion. Yarmouth winter 1917/18, by May 1918 Herringfleet. They were inserted in Russia at Murmansk. Manchester your neck of the woods I think, Graduated Battalion, brainboxes, that's worth following up.