Sid Clarke made his first appearance on 11 August 2006. He is portrayed by Simon Gleeson.
Sid is introduced as the Australian boyfriend of SJ Fletcher. Following Sid's arrival, SJ tells Minty Peterson that Sid is her brother, so she can continue to use him for his money. Sid makes it clear to SJ that he wants her to bleed Minty dry of all his money, which leads to SJ and Minty starting a relationship. SJ confides in Sid that she wants to return to Australia and have a baby, but he says he cannot meet her demands yet. That night, Minty walk in on the pair in bed together. The next morning, SJ and Sid have disappeared.