Took a bit of digging before I found the list on P32, along with the quote:
There is currently a lot work being undertaken to assess the current viability of the existing military estate in order to reduce it by 30%. Currently there are no vacant sites, so future land disposals will be attached to a reprovision requirement.
Which I read as 'there's nothing not being used but we're going to get rid of a third of the estate anyway'.