Benji has a special carnival-themed 3am Request Line.
Adele has another round of iPlayer Experts!
Catfish & The Bottlemen pop in and we have Dermot O'Leary on the phone
Kwabs performance from 2014's Live Lounge Month gets a rewind ahead of 2015's fun!
The latest news from around the UK and around the world.
Huw Stephens sits in for Scott Mills to get you through the afternoon.
Dev sits in for Greg James to get you home.
Dev sits in for Greg James with BBC Radio 1's Summer Mix - non-stop music!
Annie goes One On, One Off with the Rebel Sound crew and interviews Royal Blood & PVRIS.
Listen live (BBC Radio 1 homepage)
Phil is back with another future music mix.
Heidi with stripped-down techno and bass-jackin' house including Seven Davis Jr in the mix
Underground club jams and record store obscurities with Breach.
Serocee brings fresh, upfront sounds from Jamaica, plus Dismantle with a carnival mix.
Staying up or getting up, Adele is here to help.