Previously, Smith had appeared on the cult series Prisoner in the recurring roles as Head of the Corrections Department, Ted Douglas.

In 2023 Smith stated he would make some guest appearances in the relaunch of Neighbours, but also said he was happy to call it a day.

Smith had guest roles in the Grundy Production series Glenview High and Chopper Squad.

He worked concurrently behind the scenes with Grundy's as the associate producer and script editor of cult serial Prisoner, but also had a semi-regular role in the series as head of the Corrections Department, Ted Douglas.

He also appeared in a documentary celebrating the anniversary titled Neighbours 30th: The Stars Reunite, which aired in Australia and the UK in March 2015.

[9] In February 2022, Laura-Jayne Tyler of Inside Soap reported that Smith would be reprising his role to play a part in the show's finale.

[11] On 2 December 2024, it was announced that Smith would depart Neighbours after he was diagnosed with terminal cancer, with executive producer Jason Herbison saying that they would write the character out.

[14] On 2 December 2024, Smith announced that he had been diagnosed with terminal lung cancer, resulting in his final departure from Neighbours in early 2025.

[3] On 30 December 2024, Smith gave an update to his condition confirming that his tumour had shrunk in size and was still undergoing treatment.