HI, Thanks for all this info. After granddad died, my auntie threw out lots of things belonging to her parents so I suppose all his papers were among them.
He signed up here in Dundee Scotland and I've no idea where he done his training but I do know he was based in England, somewhere. I also remember being told he gave the wrong age to join the then RFC before the end of WW1 but I can't find any record of him doing so. There is only one photo of him in his raf uniform which I have but doesn't show the medal so I think he got this afterwards. Would it help if I gave his name here?