A little while ago, we did a sort of audit of which Vulcans were likely to be scrapped over the coming years. XL391 was No 1 on the list, and XM603 was not far after simply because of the likelihood of the airfield being closed and redeveloped.
For a comparison, look at Hatfield - there was a preserved Trident there for many years, which, as soon as the change of use was granted for the airfield, had to be scrapped - no other choice.
So, put simply, if it is likely that Woodford will be closed in the next few years, it is equally likely that the Vulcan will be removed before that happens. What else can be done with it?