The Roman Gask project was founded in 1995 in the University of Manchester. It has since been engaged in an extensive campaign of surveys, excavation and archive work. Its remit was to cover all of Roman Scotland north of the Antonine Wall but, as its name suggests, its principal focus has been on the system of military works on and around the Gask Ridge in Perthshire (from the Glenbank fortlet, north of Dunblane, to the fort of Bertha on the Tay). This volume is an interim report describing the progress made during its first five years. It is in two sections; the first provides an overview of the current state of knowledge on the Gask, while the second section reports on a series of field work programmes (two rescued from archives dating from the 1960s and 1970s. The project has undertaken nineteen excavations, numerous surveys, museum/archive work, air-photography assignments, and field-walking tasks: a significant achievement over a short period of time. With contributions from A.T. Croom, M.H. Davies, A.C. Finnegan, M.A. Hall, K.F. Hartley, B. Hoffmann, A.J. Hughes, N.J. Lockett and S. Ramsay.