Cheers to you Brian, any chance you are thinking about a book on the Victorious squadrons in the Pacific ?
Yep I had the Kirkenes/Petsamo raid claims (the LG account post-war also credits a Bf110 probable) and the Do 18 (but not the LW unit) from "Send her Victorious" (my first FAA book). Even after all this time the two claimants haven't been identified as far as I know, and there is a question in my mind over which of the three pilots identified on the Kirkenes raid (Grenfell, Cooper and Wilkinson) shot down the Bf109. I believe Victor Cyril Grenfell picked up a DSO for his leadership on this mission.
best regards
Keith