Besides acting, Leong was also a radio deejay with Gold 90.5FM. He came under media spotlight after he was reportedly censured for announcing the disruption to the Circle Line train services on the morning of 14 December 2011 as SMRT had not issued an official statement. As host of the weekday breakfast show, Leong had a practice of reading out user comments on Twitter account regarding public transport and traffic conditions. The station's response triggered massive criticism from many netizens and listeners already angered by SMRT's delay in announcing the disruption, which took place during the early morning "rush hour" and affected thousands. Leong later released an apology on his Twitter account and asked readers to "move on" from the incident.