Jonny from The Drums plays Pop Quiz and Steve-O is Fresh Off Stage.
BBC Radio 1, BBC Radio 1 N. Ireland, BBC Radio 1 Scotland, BBC Radio 1 Wales
New music from Laura Marling, Teeth and Daughter.
Late night new music and lols.
Playing out some John Peel favourites.
Late night new music and lols, plus Unicorn Kid plays Rob da Bank's Monday Night Pop Quiz.
Chloe from The Only Way Is Essex is on also Wonder Years and Ready For The Weekend.
Grimmy looks after Scott Mills, whilst Scott looks after the breakfast show!
Professor Green is Grimmy's special guest.
Grimmy talks to Harry Styles for the 'exclusive 3rd Radio 1' play of the new 1D single.
Grimmy enlists the help of Alexa Chung to shop for a swagger-licious outfit for Westwood.
Grimmy chats to comedian Russell Kane, plus Marvin from JLS plays the Pop Quiz!
Kelly Rowland chats to Grimmy as he looks after Scott Mills' show!
2 Shoes are in live discussing all things X Factor.
Grimmy talks to Florence + The Machine.
Florence, off of The Machine, joins Grimmy as he continues to look after Scott's show!
Jodie Marsh is in with Bodybuilding tips for Grimmy.
Grimmy looks after Scott Mills and Jodie Marsh, bodybuilder, compares muscles with him!
Grimmy presses play on a whole hour of highlights from Radio 1's Teen Awards at Wembley.
Mollie from The Saturdays plays The Pop Quiz and an hour of Teen Award highlights.
Late night new music and lols. Grimmy talks to Switch who made his Record Of The Week.
Late night new music and lols. Nick speaks to Switch and comedian Daniel Sloss pops in.