
GMG Radio will continue to sell its own sponsorship and promotions nationally and locally, as well as regional and local sales for all of its stations.
Don Thomson, chief operating officer at Global Radio, said: "Global Radio is delighted to continue this long-standing relationship with GMG. Together, the sales proposition for advertisers is hugely beneficial."
The news comes in the week Global poached Adrian Stewart, former programme director of Bauer Media's Magic 105.4, to take the same role at Heart 106.2.
Stewart was the second person poached from Magic in the past few weeks.
Liz Parkin is leaving her position as Magic's commercial programming director, to become head of commercial programming for the whole of the Heart network.