As from April 2015 he is Assistant Conductor of the Sydney Symphony Orchestra. In 2014 Thatcher graduated from the Royal Academy of Music with an Master of Arts, where he studied as an oboist. During his studies Thatcher played with orchestras such as the Philharmonia Orchestra, the Royal Philharmonic Orchestra, the London Sinfonietta and the Australian Youth Orchestra.
In February that year, Thatcher won third prize at the Georg Solti International Conducting Competition (see George Solti) for conducting Strauss"s Don Juan and Dvořák"s Carnival Overture in front of the Human Resources-Sinfonieorchester and Frankfurter Opernund Museumsorchester. In August 2015 Thatcher was joint winner of the inaugural Neeme Järvi Prize at the Menuhin Festival, presenting him the opportunity to conduct the Sinfonieorchester Basel in their 2016/17 season.
