
George, who was acting commercial director and managing director of national sales, will report to operations director Steve Orchard.
His tasks will include developing digital radio and non-traditional revenue streams such as podcasting, and launching the Xfm network around the country.
Duncan said: "With the relaunch of Capital Radio in London and the creation of a stronger network for Xfm, we will be able to deliver some great new opportunities for our clients over the coming year."
"As digital radio takes off, I am focused on ensuring that GCap Media is one of the UK's most innovative and proactive media owners with the highest levels of customer service in the industry."