Professor Lyle was Director of the Broken Hill University Department of Rural Health, the University of Sydney, from 1997 to 2022 and one of the founding members of ARHEN in 2001. Professor Lyle was a strong advocate for the work of the University Departments of Rural Health (UDRH) and led many collaborative initiatives over the years to build and share knowledge across ARHEN and support rural and remote health colleagues around Australia.