Lost RSAF Pilot perhaps ? Looks like Saudi Air Force livery to me
In Saudi camouflage and registered as ZH917. A few Saudi IDS airframes are in the UK as part of the Tornado Sustainment Program.
Some images of ZH917 at Warton
http://www.airliners.net/open.file/1197996/L/
http://www.airliners.net/open.file/1106242/L/