In addition to the research, Gunn set up a telephone support line that offers advice and assistance for parents of children who have leukaemia or other forms of cancer. Known as gaps:line (an acronym for Gunn Appeal Parent Support), the service quickly grew. From its initial pilot launch in Norfolk in early 2004, it expanded to cover the "eastern region" by the end of the year, and launched nationally in early 2006. The appeal has also funded other research and support work.