I suspect if the RN had retained and modernized a KGV and kept it in service thru to the present day that a crew would have been avalaible for it as well ?
Presumably. Then again this is the RN of the later half of the 20th century we're talking about, which made some really dumb decisions. I would not put it past them to leave her swinging at anchors till the start of the Falklands Crisis and have to scramble to find some lads to man her.