https://i.gyazo.com/79e8b572a742a438...c63882baa8.png - the Islands outside of Brest as I mentioned
Rockall island may be alright but might have some close calls but I think we're fine because of its small size
https://i.gyazo.com/e259bef8f9bfc2e7...c6f200d765.png
So really all the Brest islands are the major issue, rest of the areas seem good. Now its less of an issue after June 1940 because the French traffic isn't present anymore after Germany defeated them but there's still a few that path right into them after that point (probably best just to remove all the French islands in the attached screenshot to avoid ships running aground.