Hi Wayne
I have a late 40s Flyer being renovated at the moment, and Nick Tithecott of Lloyds Cycles had all the transfers in stock, with the exception of the fork diamonds, which I then drew, and he printed on vinyl. However, I am not sure that all the Flyer models over the years used the same transfers, so you would probably need to send pics of the originals.
http://ourworld.compuserve.com/
Peter Brown, Lincolnshire, England