Hacker T dog and Simeon Qsyea from Taking the Next Step join the boys in the studio to surprise their biggest fans. Sam and Mark take on Jedward in Newcastle for a comedy challenge and there's music from X Factor winner Ben Haenow.

Wolfblood's Leona Vaughan joins Sam and Mark in the studio. There is also music from singing sensations Collabro, and the boys embark on their toughest In Yer House challenge yet.

Olympic medallists Beth Tweddle and Nile Wilson join the boys for more surprises and weekend wind-ups. A Beyonce fan takes to the air to win a fantastic prize, parents get wet in Karasoake and Bars and Melody perform their latest hit.