I dont think its right that a private organisation is allowed to hand evidence to the CPS in the first place? When it comes to evidence in criminal cases there are high thresholds on how the police handle evidence and they breaches of that evidence chain can result in that evidence being thrown out from the case. Yet I doubt Fujitsu/Post Office would have had to follow the same rules as the police they could pick and choose what they put forward omitting anything that might undermine there own case.