Just found another source which seems to indicate the Ju87 and Bf109 were dummies
http://263squadron.weebly.com/upload...1oo26aug41.pdf
Also found (through a discussion on this forum ten years ago) that the Lannion claims were very optimistic and that in fact just one Dornier 217 was destroyed and four other aircraft damaged!
It therefore seems that the RAF claims were 13-1-4 but LW casualties were 1-0-4