Well this is not an M20 site, but all WD bikes, so no problem there!
I'm sure Jan will chime in for dating the bike, and he makes nice parts too!
Parts can also be ordered online with Hitchcocks, they have a nice website with the parts schematics on it. select 1945-46 models, and most will be the same as wartime.
Yes, I have gotten the pictures, but it is a Norton frame, cannot see if WD or not, have sent the pictures on to Rik, but he's not doing emails much anymore! will send them to you, Jan.