[citation needed] Smart joined Bizarre at The Sun in 2004 as Victoria Newton's deputy; then became column editor when she was promoted to head of entertainment in November 2007.
[3][4][5] Smart became a deputy editor of The Sun in London in May 2016 but left the paper altogether in November 2016 to focus on business and broadcasting interests.
[8] In 2024 Smart replaced Colin Murray as host of the Monday to Thursday editions of BBC Radio 5 Live's late show,[9] presiding over a drop in audience.
In May 2010 he appeared on Channel 4's Real Stories discussing the careers of music stars including Cheryl, Rihanna and Simon Cowell with host Dave Berry.
As of August 2022, actor Martin Compston has starred in a Restless Natives weekly podcast with Smart as co-host via Global Player.