Dick and Dom are best known as children's TV presenters
Dick and Dom are to leave BBC Radio 1 after less than a year, as the station revamps its weekend schedule.
The duo, best known as children's TV presenters, will leave their Sunday morning show in September.
The slot will be covered by Edith Bowman and Chappers and Dave before Sara Cox returns from maternity leave to take over in the New Year.
Radio 1 announced last week that former drivetime host Dave Pearce was to leave the station after 13 years.
The new weekend schedule will see Nick Grimshaw take over the 0700 to 1000 weekend breakfast show replacing Nihal, who will move to afternoons.
Head of programmes Ben Cooper said he wanted to wish Dick and Dom "all the very best and say thanks for their work at Radio 1".
They joined the station last October, having previously won Bafta awards for their anarchic kids' show Dick and Dom In Da Bungalow.
Their Sunday morning slot will initially be covered by Edith Bowman, who is also returning from maternity leave, in September and October.
Bowman will return to her regular 1300 to 1600 weekday slot in November.
Chappers and Dave will take over in November and December.
Cox will return to the station in September, initially providing maternity cover for Jo Whiley's 1000 to 1300 weekday show.
She will take take permanent charge of the Sunday morning show in January.
Grimshaw said he was "really excited" about taking the helm for the weekend breakfast show.
"This is a great opportunity," he said.
"I've always loved breakfast radio so it will be great to give the Radio 1 listeners my own weekend wake-up."