Hello,
It was suggested that I visit a Saab forum and it paid dividends as it suggested holding the "Band" button down rather than the "ST" button, turning on the ignition and waiting 10-30 seconds which proceeded to clear the code and I was able to enter the correct one.
All working and I haven't got to seek permission from SHMBO to put it in the freezer which was put forward on BMBikes forum as another thing to try.
Best regards,
David