I don't think this is the right place to find an answer to such a question. I would suggest that you try to find a local historian (try the local authorities of some small English coast towns on the Channel and ask around). I'm sure there is a fisher museum somewhere in one of those towns, and if not anywhere else, there you will find the answer. I used such sources - not at all related to WW II aviation - to find similar details for one of my pilot biographies, with much success. I was surprised to find how helpful people are, even when it deals with a book on a subject which they don't have the slightest interest in. Good fishing luck!
PS - you don't have a website where we can see your artwork?