I seem to remember talk of one of the subs, Conqueror I believe, being turned into a museum boat. Some years ago I went on one of the boat tours of Plymouth harbour and the commentary mentioned the nuclear submarines in the dock, when we got back to the quayside if the commentator knew the names of the subs which he did and was able to tell me, however, he did say he used to name the subs on the tour until one day a group of Argentinian tourists got irate at the mention of Conqueror!
Ian