Hensley and Cuthbert initially met at the Sylvia Young Theatre School , while Hamblett , a former jockey , was added to their group by former manager Julian White .
They named themselves Triple J due to each of them sharing the same initial .
Hensley and Cuthbert initially met at the Sylvia Young Theatre School , while Hamblett , a former jockey , was added to their group by former manager Julian White , and they named themselves Triple J due to each of them sharing the same initial .