Dr. Walter is a practicing GP who established the Cancer Group in 2009. She leads the Cancer Research UK-funded flagship international CanTest Collaborative, with partners across institutions in the UK, Denmark, Australia and the US. CanTest is developing strategies that explore and accelerate improvement in cancer outcomes nationally and internationally through the transformative implementation in primary care of triaging and testing approaches to support early detection of cancer. Other current projects are investigating skin, upper GI, brain and urological cancers. Dr. Walter chairs the Early Diagnosis sub-group of the NCRI’s Primary Care Clinical Studies Group and sits on a number of national and international advisory and funding committees. She is Honorary Clinical Associate Professor at the University of Melbourne and the University of Western Australia.