A man dubbed ‘Doctor Death’ ran a deadly dog fighting ring in the garage of a couple’s home. Phillip Ali, 68, who led the international organised fighting gang, has been convicted alongside Billy, 38, and Amy Leadley, 39, the couple who provided their home as a venue for the shocking spectacles. Ali’s accomplice, 56-year-old Stephen Brown, was also found guilty of a series of crimes relating to the dog fights. All four were convicted at Chelmsford Crown Court on Wednesday. The group ran a barbaric contest ring where dogs pumped with steroids fought in bloodthirsty battles, with witnesses being…