An island in the Outer Hebrides between North Uist and South Uist, connected to both by causeways.
Home to a substantial missile and radar range, where the larger rockets in our arsenal can be fired out towards the US. As the US is 2,000 miles away, it's considered safe to do this. That doesn't seem to have held true for North Korea of late though.
Beautiful scenery, best seen at the MoD's expense.
Has a number of interesting archeological sites, some very good seafood, very few trees and locals with more fingers than the Good Lord originally fitted as standard. And webbed feet.