Smuj,
It's not just the wings which are relatively recent. Some time ago, I was involved with a task at DSDA Ashchurch to identify and value shed loads of equipment ( most of it ancient ) which had been consolidated from various storage depots, one of which was RAF Stafford. Among the items were two virtually brand new jigs which had been manufactured in the early 80's for the fabrication of Lancaster tail assemblies.
Due to the effect of RAB, to avoid them being scrapped, arrangements were made to have them moved to RAF Coningsby.
Must try to find the pics taken at the time.