Prisoners denied access to forensic evidence in bid to prove their innocence

Campaigners call for reforms to allow those who claim to be wrongly convicted - such as Kevin Nunn, jailed for murdering his ex-girlfriend - to obtain information to appeal

Prisoners convicted of serious crimes who may be the victims of miscarriages of justice are being blocked from access to crucial forensic information that could prove their innocence, experts have warned.

Campaigners are calling for legal reforms to provide improved access to evidence that may help prove the innocence of the wrongly convicted. They say a supreme court ruling in 2014 is effectively being used to deny access to police files and evidence.