During this period he was the distribution manager for Larrikin Records; in 1983 he took on The Johnnys, and in 1985 The Wreckery: a "junk rock" group formed by ex members of Nick Cave's[2] backing band The Bad Seeds.
In 1985, he teamed up with Rick Tanaka, radio presenter / producer of Tokyo Hit Beat and the award-winning Nippi Rock Shop on JJJ, and they started 135 Music (135 being the line that joins Aust and Japan on the map) to encourage cross cultural promotion.
At this time he also formed Lost in Music publishing and signed Tex Perkins, Rebecca's Empire, Caligula, Dave Graney, Clouds, Falling Joys, Crystal Set and Kim Salmon to name but a few.
During his time at the helm of Polygram Music, he signed Pauly Fuemana, The Cruel Sea, David Hirschfelder, the LennOno catalogue, Leonard Cohen, Died Pretty, Nick Cave, Powderfinger, The Fauves and The Go Betweens.
In 2001, Grierson was promoted to Senior Vice President for Newscorp Music, continuing his existing roles but now also supervising Mushroom UK and Rawkus and he oversaw the Festival 50th anniversary in 2002.