The Adelaide Tatsumi-ryu Kenkyukai is led by Simon Roberts-Thomson. Simon is a senior student of Liam Keeley and has been training in Tatsumi-ryu since 2005. He was awarded 4th dan in Tatsumi-ryu by the present Headmaster, Kato Hiroshi Sensei, on 12 January, 2020. In addition to his training in Tatsumi-ryu, Simon has also trained in Chen-style Taijiquan with Liam Keeley and Shindo Muso-ryu, Toda-ha Buko-ryu, Xingyiquan and Taijiquan with Bill Fettes.