I had one of those myself, and recently got the opportunity to buy another one from the Swedish eBay. At the same time I bought, what the seller called, a Jowett Javelin. This was very similar as the "Austin", and I have no doubt that they are made at the same factory. This, however, was marked with "BETAL" on the inside. I read somewhere that Betal was a small firm that made cheap toys, like cars and other things. I am sure some of you knows more about this.
Have a look at the pictures:




Images resized by Ghosthunter.