 FACT: At the beginning, in Belfast its supposed to be September  1992 but the tax disc on the silver car that the spare tyre is taken  out of the boot has a tax disc that says "9 94" (September 1994)  meaning it has to have a new tax disc at this date. These are valid  for a maximum of 1 year so even if the disc was bought on that day  the maximum date could only be "9 93" 