In January 1987, the Home Office referred the conviction of the Birmingham Six to the Court of Appeal. This motion resulted from the findings of forensic scientists working for the Home Office, who had expressed grave concerns as to the reliability of the Griess tests cited as forensic evidence of the defendants' guilt. In granting this motion, the Home Secretary himself emphasised that he had "little or no confidence" in the reliability of this test. This appeal was heard before three judges of the Court of Appeal in November 1987.