Thanks Uncle Bulgaria, that is really helpful.
The Rexine (or Rexine lookalike) seems to be the most common used by Dansette restorers and I have not been able to find anything remorely resembling the cloth appearance of my Dansette Bermuda. However, the link to FJ Ratchford you posted looks promising. They certainly have many more options available than other places I have searched.
I shall have to settle down to a good browse through the Ratchford website
Barry