I have been in e-mail correspondence with the owners of the letters, Settle Town Council - hoping to find somewhere else in the town for them, preferably within view of the railway. Nothing came of that idea but they did ask if I was prepared to continue storing them out of harm's way.
Sooooo they are now in safe storage and out of the way, at the town end of the tower this time. Unlikely to be stolen from up there anyway!
click to enlarge