At the end of 2007, Clarke hosted From SR to Lavvie Heid - How We Made the Break, an affectionate look at the top 50 adverts shown in Scotland since 1957 as part of the celebrations for STV's 50th birthday.
Clarke has also appeared in BBC One's Live Floor Show and BBC Two's World Cup's Most Shocking Moments.
Clarke spent three years as a DJ on Scottish radio station Beat 106, fronting the Breakfast Show and winning the Presenter of the Year at the British Radio Awards in 2004.
Clarke later returned to Beat 106 under its new name of Xfm Scotland. On 7 November 2008, Xfm Scotland became Galaxy Scotland and on 10 November 2008, Clarke began hosting a weekday breakfast show with Vanessa Motion, Des & Vanessa @ Breakfast. On 3 January 2011, Galaxy Scotland was renamed and rebranded as 105-106 Capital FM, where he remains as a breakfast co-presenter.
In 2013 it was announced that the cast of Cinderella would be returning for the year's pantomime, Aladdin. Clarke will again play the lead comic role of Wishee Washee, with Dunbar as the Slave of the Ring.