Well, I screened half a dozen "Icare" issues for this passage but I found nothing. Every issue contains a lot of text. Now I really don't know where this mention could be. But I think you could find this piece of information easier in the RAF or IWM-archive : only 2 PR-Spits were based in France 1940. Finding where should not be all too difficult.
Sorry pal but I can't re-read 17 complete Icare-issues from 1970 to 1997. Good luck!