Evidence of Professor Vivienne Nathanson for the Penrose Inquiry. She had previously given evidence. Discusses development of best practice standards for Doctors and changes to doctor/patient relationships since the 60s and 70s including the introduction of consent testing for Hepatitis C. Explains contemporary best practices for doctors treating and testing patients. Discussion over informed consent for testing in the 1980s and patients being informed of medical information held about them. Further evidence of Mr David Mcintosh for the Penrose Inquiry. Discusses the Hepatitis C look-back scheme in Glasgow and why it was not implemented until 1995 when Hepatitis C screening began in 1991. Discusses his management role with SNBTS and the cultural changes and challenges. Discusses 1990 working party to provide recommendations for counselling and support of blood donors found positive after testing begun. Denies that there was Scottish resistance to starting blood testing earlier. Discusses his departure from the SNBTS. States that a barrier to getting answers and changes was that not enough people pushed for them because it was thought that no answers could be found. Discusses receiving letter from Lord Fraser in 1994. Said that Professor Cash had a lot to do with stalling and resisting implementation of the look-back. States that he was denied starting the look-back/blood testing earlier by Department of Health in England. States that in hindsight he would have paid more attention and pushed harder for more senior people to take action sooner. Discusses divergence between Glasgow and Edinburgh in respect of blood testing. States compliance and not causing tensions with England was prioritised over duty of care towards Scottish patients. Denies that he restricted Professor Cash from speaking directly to SHHD.