Virgin Radio presenters Pete and Geoff will step down as breakfast show hosts at the end of the year.
Pete and Geoff won a Sony award in 2002
The duo, full names Pete Mitchell and Geoff Lloyd, plan to remain with the UK radio station in a new time slot. Their replacement has not yet been announced.
"They are absolutely integral to the future of Virgin Radio," a station spokesman said.
The pair's breakfast show attracted 1.2 million UK listeners in the first three months of 2005.
Irreverent double act
Terry Wogan hosts the most popular national breakfast show on BBC Radio 2, attracting 8.09 million listeners in the same period, according to Radio Joint Audience Research figures.
Irreverent duo Pete and Geoff have worked as a double act for 10 years, and on Virgin Radio for eight years - three in the coveted breakfast slot.
The pair won a Sony radio award in 2002, in the daily music programming category.
"Three years is a long time on a breakfast show," the Virgin Radio spokesman said.
"Pete and Geoff previously presented a show in the evening 'drivetime' slot, so they may return there - but no decision has been made."