Doncaster-Sheffield-Robin Hood Boy,
Nothing unique about the situation at Leuchars and Kinloss at all. Topcliffe and Tern Hill have exactly the same arrangements, as did Waterbeach and Dishforth in their day, the RAF still providing Air Traffic at Dishforth now, though primarily to the AAC.
But both Topcliffe and Tern Hill are exactly as Leuchars and Kinloss, and have been for a very long time now.