For some reason (which is beyond me) I can't upload the photo I took of the plaque itself. If you can't read it, it states:
In Memory of
Flt. Lt. Nicholas Gresham Cooke, D.F.C.
A Keen sailor In Blakeney Harbour.
British 14ft Dinghy Team 1934.
Killed In Action Over The North Sea
May 31st 1940 Aged 26.