Line Up And Wait
Hello folks. At LHR we were at about 300' ILS 09R when the tower controller cleared an aircraft to line up and wait 09R. This caused both of us on the flight deck concern. After vacating we questioned the whereabouts of the aircraft that had been cleared to line up whilst we were on very short finals, the response was that he was at the threshold.
My question is should that clearance have been "after the xxx on short finals, line up and wait 09R?" It indeed sounded very wrong to us in the air and we were surprised by the controllers curt response to a valid question. Any thoughts?