Bevan was born in 1964 and grew up near Merewether in Newcastle.
In 1984 Bevan joined The Newcastle Herald as a cadet journalist. He later worked in commercial radio as a news presenter. After a fifteen month stint in Japan he joined the Nine Network in 1989 as a reporter. He spent time in Perth working for Nine News.
Bevan moved to the Australian Broadcasting Corporation in 2005, working initially as reporter for the 7.30 Report and a presenter on ABC Local Radio. In 2008 he was posted to Moscow as a correspondent for ABC Television.
In 2010 Bevan returned to Australia to become a presenter on ABC News 24.
Scott lives in Sydney with his wife, Jo, and twin boys, Thomas and William - and his kayak, Pulbah Raider.