I know its not railways, but as I have drifted into modelling soe WW1 modules for centenary next year, I kept coming across references to this model manufacturer Wingnut Wings, a superb name, you just know they must be on the same planet as us.
I originally thought they must be USA based as prices were in dollars, but then found they were based in New Zealand, and post worldwide FREE postage.
I thought they must have some connection with that NZ group which builds full size WW1 airplanes and I was absolutely right, link on their web page.
Now like some other military modelling websites theirs is superb with plenty of info so you know what you are buying. Miniart is another with good info. This one goes even further as the online kit instructions which can be downloaded contain everything you are likely to want to know about each plane. Certainly something other kit manufacturers could consider.
I plan to order one of their kits, hopefully. Not sure how I can fit it my APA module as its pretty big in 1/32 scale(still can't understand why aircraft are 1/32 but other military are 1/35, but happy to work around that. Might have to build a double deep APA box module. As these models are not cheap, and are fragile, want to have them in relative safety of an APA box.