As part of the deal, brokered by Bauer Advertising and Interpublic media agency Universal McCann, More Than will sponsor an ad-free hour on Sunday nights, featuring the tagline: "More Is ... Giving You More Indulgence".
Breakfast, drive-time and weekend promotions will also offer listeners the chance to win tickets to four More Than Indulgence Events running throughout the year.
More Than, which launched in 2001, is part of the Royal & Sun Alliance Insurance Group.