SheffieldDoncasterRobinHood Boy,
You completely miss the point of closing Leuchars. It's closing because the RAF has no need for 4 fast jet bases and it has to lose the cost of running one from it's operating budget. As you could not move all of the Lossiemouth residents into Leuchars alongside 3 Typhoon squadrons, Leuchars is closing as a fast jet main operating base.
The AAC from Gutersloh will be going to Yeovilton when the AAC reduce to just 2 rotary types at 2 operational bases. Apache at Wattisham and Lynx Wildcat at Yeovilton alongside the Navy Wildcats.
I see no reason why the UAS couldn't stay at Leuchars, just as the UAS at Cosford could stay on the airfield there when the station is handed over to the Army.