Thanks Steve ,
Ned that's a great image thank you, it certainly looks the same 'Springfield 1903 A3' chuffed with that .
Thanks for the great info on the Regimental markings and the background, I didnt realise that type of plate was still in use during WW1. Your IDs are great thanks for the help and detailed explanations. Ive also checked out the Pattern 14 rifle and was pleased to find the image below. It is very similar but I think A as marked on the image is wider than on my relic and B appears to be open backed where as my find is closed.