Glyn Maddocks, founder of the Centre for Criminal Appeals, tells us about his work in trying to overturn the convictions of Tony Stocks and Paul Blackburn, and the failures of the criminal justice system in overturning wrongful convictions. Glyn was instrumental in setting up the Centre for Criminal Appeals, and has devoted more than 20 years of his career to freeing victims of miscarriages of justice from jail and clearing their names.