This is just one panel of the memorial at Duxford. Each aircraft represents one aircraft of that type and its crew lost in WW2. It is the most thought-provoking, superbly designed memorial I know of; the other is the memorial to all the female pilots of WW2 which is located at Elvington and is, as far as I am aware, the only one of its kind.
I agree, it's an incredibly moving memorial. I took some friends into Duxford a month or so ago. One of the girls was, quite literally, moved to tears when she saw the memorial, having incorrectly thought each aircraft was for each American Airman lost in WWII. It was quite hard having to explain to her they represented each airCRAFT, and that each would have a large crew.
tKF