"A few years ago my wife and I were in a second hand bookshop in Cheltenham when she said to me, "Isn't that that film you keep going on about?". What she was pointing at was a slim blue volume called Once a Jolly Swagman. I had a quick look and yes it was. 30p was all they wanted. It was a truly awful book with speedway not filling as much of the story as the film screenplay. I ended up flogging it on Ebay for a substantial profit however, which was much more fun."