As told to me by one who was there, a few years back...the place one of England's off shore islands.
A noted local dignitary was normally the chosen one to meet and greet visiting Royals.
With a forthcoming visit in mind an invite was given to land the royal chopper at his private airstrip near the coast...pop in for tiffin and all that. This was deemed a grand idea..pass on the airfield details to 'my chaps' etc.
Said local dig duly passed on the coordinates from his newly acquired hand held GPS.
Come the day in question the chopper hove into view right on time, landed at the appointed spot. Party disembarked, much shaking of hands doffing of forelocks etc.
When it came to the pilots turn to meet the local dig, conversation went thus..
Local dig, Managed to find the place okay then?
Pilot, Yes, but just as well I did not land at the f***ing ordinates that you gave us.
Local dig, Why??
Pilot, Because we would have landed in the sea 3 miles out in the English Channel!
Local dig went off to read the GPS instruction book.