18:00Six O'Clock News27/02/2018 Research reveals disclosure failures by police and prosecutors.BBC Radio 4 Duration: 30 minutes Tue 27th Feb 2018, 18:00 on BBC Radio 4 LWAvailable for over a yearListen nowResearch by BBC News has revealed widespread failures by police and prosecutors in the disclosure of evidence.GenresNewsFormatsBulletinsBrandSix O'Clock News Source: BBC Online