Kerr was a columnist for the publication of an Australian conservative think-tank Institute of Public Affairs Review; a contributing editor to the Australian edition of The Spectator; and a regular guest on ABC Radio National's Late Night Live with Phillip Adams, ABC News Radio, Sky News Australia, ABC Television News Breakfast, ABC News Radio and radio stations 774, 2GB and 5AA.
Kerr was a prominent voice in Australian conservative circles, appearing as a commentator in various media outlets such as the Institute of Public Affairs Review, The Spectator, and ABC Radio National.