I've heard part of the problem is that the Post Office were allowed to conduct their own prosecutions. If the public prosecutor (Crown Prosecution Service) woul

I've heard part of the problem is that the Post Office were allowed to conduct their own prosecutions. If the public prosecutor (Crown Prosecution Service) would have been involved, they would have asked the Post Office for any material which would have benefited the defence (this would be passed as disclosure). Because the Post Office were "victim" and prosecutor they never did this and the defence didn't get this material.