Guest Stars Ellie Goulding as Herself Jess Glynne as Herself Years & Years as Themselves Nick Jonas as Himself Katy B as Herself Tinie as Himself (Tinie Tempah) The Vamps as Themselves DJ KDA as Himself The Vaccines as Themselves Sigala as Himself Lost Frequencies as Himself The Maccabees as Themselves Grace Sewell as Herself (Grace)