Nick chats to Graham Norton, plus Chris Evans talks about the BBC Music Awards!
Grimmy is joined in the studio by Tulisa.
Grimmy plays Call or Delete with McBusted!
Daniel Radcliffe is Nick's special guest.
Rita Ora co-presents with all the backstage gossip from the BBC Radio 1's Teen Awards
Labrinth and Ella Henderson join Grimmy to help co-host the show ahead of the Teen Awards.
Nick is joined by Dermot O'Leary.
Professor Brian Cox joins Grimmy for Call or Delete!
Ben Howard drops in & listener superfan Mikala performs live for him!
Grimmy talks to Pharrell Williams and reveals the first of Radio 1's Teen Heroes for 2014