Yep, and XH558 is the last flying example of any of them anywhere in the world.Vulcan, Victor and Valiant.
There are a couple of Vulcans and Victors (at least one of each to my knowledge) still capable of doing fast taxi runs as well as a few more on static display in museums.
As far as the Valiant goes, however, there is only one complete example left anywhere, and that's on static display in the RAF Museum at Cosford.