A nurse who worked at Gosport War Memorial Hospital during the time of the scandal believes patients would have stayed alive if bosses had listened to her.
Beverley Turnbull was one of several nurses who worked on the elderly medicine wards - and tried to raise her concerns to superiors about the use of drugs.
Last week, a government inquiry into hundreds of deaths at the hospital found more than 450 patients died after being given powerful painkillers inappropriately.
In an exclusive interview with Andrew Pate, she says that Dr Jane Barton - who prescribed opiates to 94 percent of the patients she treated - wasn't solely to blame.
Beverley Turnbull also backs the families' campaign - and believes a full apology should be given by the police, Crown Prosecution Service and hospital management at the time.