Sorry for the delay in my input, been away giving the lock keepers a laugh with my boating skills on the Caledonian Canal. Thomas Telford must be turning in his grave.
Anyhoos, 15th of September 1916 was the first day of the Battle of Flers-Courcelette. (15th - 22nd) 88 killed in the 7th battalion on day 1. The Division total casualties were 3,750 for the 15th to the 22nd. Within the 50th Division, the 149th Brigade, that is the Brigade of four infantry battalions of which the 7th NF was a component, the 'other ranks' killed casualties were:
4th NF = 189
5th NF = 18
6th NF = 71
7th NF = 88
there would be many more wounded some of which would die in the following days.