Formatting problem now corrected

Many thanks to a reader who spotted that the kindle ebook version has some formatting issues. This has now been corrected by my good friends at Amazon. If you downloaded a copy before 30 April you need to go to your Amazon account and  "manage my kindle" and click on the update against the book title. You may have received an email from Amazon if you are affected. I suggest waiting until 2 May before trying the update just to be sure it has been processed. There is no additional charge for receiving the updated version.