Not quite in the "wrong airfield" context, more in the "wrong airspace, uncertain as to present location" actually.....the two Luftwaffe F-104's that flew down the Mersey Valley, at low level / high speed and thus through the middle of Stockport over the viaduct were a delight to see and hear....
Their boss may not have quite so impressesd I suppose.....alas
This was mid 80's by the way. Possibly somebody from MAN ATC may recall this little excursion?