Ellie Harrison peeks through the keyhole of some of Hertfordshire's homes and gardens, planting trees in St Albans and visiting the former home of Barbara Cartland. Show more

Shelby Bain, who plays Amy in The Next Step, joins the boys to surprise a superfan in the studio. Celebrity MasterChef winner Angellica Bell is the Celeb of Doom. Show more

Lauren Layfield becomes a trainee agent and goes in Yer House. Singer HRVY joins the boys in the studio to perform his latest hit. Show more

Boy band RoadTrip surprise a fan in the studio and perform their latest hit. The boys go In Yer House to carry out another undercover mission. Show more

Ian Stirling and Ben Shires face the boys in a rollercoaster challenge, a football fan has the chance to win prizes and more parents warble a wet tune in Karasoake. Show more

Boy band New Hope Club surprise two of their biggest fans in the studio. Blue Peter's Radzi takes on the role of secret agent and goes 'In Yer House'. Show more

When someone forgets to book the studio audience, Sam and Mark are left with time on their hands to reminisce over some of the highlights of the current series. Show more

X Factor winner Matt Terry plays his latest track. Cel Spellman gives the boys cold feet, and CBBC's Lindsey and Karim team up to race Sam and Mark in a soapbox derby. Show more

Entertainment show. Callum Beattie joins Sam and Mark in the studio to play his latest hit and CBBC's Katie Thistleton is pranked in her own home. Show more

Sam and Mark are joined by Saturday Mash Up's Jonny and Yasmin. Naomi Wilkinson and Ed Petrie challenge them to take part in a street dance competition. Show more

Sam and Mark are joined by Olympic gold medallist Rebecca Adlington, who takes on the selfie-stick challenge in the studio. Show more

Richie and Henry compete in a muddy outdoor obstacle course.

Get ready for lift off as Adam demonstrates three fun rocket experiments you can try at home. Mwaksy dishes up a delight using food that would otherwise have gone to waste. Show more

Adam and Richie take on a head-to-head challenge on shredder machines, and Mwaksy shows off her moves in a dance battle with a princess. Show more

Adam and Mwaksy get behind the wheel as they take a sightseeing trip around Northern Ireland. Plus Hairspray the Musical perform. Show more

BP celebrates the amazing Olympic and Paralympic athletes who inspired a nation this summer. Show more

Blue Peter attempts to break some world records in the studio with the UK's leading freestyle cycle stunt team. Also, Adam and Mwaksy learn what it takes to be a medieval knight. Show more

Adam is on a quest to see if he can communicate with animals, and Mwaksy's making some adorable animal book marks! Show more

Blue Peter go behind the scenes on a brand new CBBC series, Show Me the Honey, and make beeswax wraps in the studio. Also, Mwaksy meets an amazing BP fan as she gets fitted with a new bionic arm. Show more

Blue Peter launches a brand new, out of this world competition with British astronaut, Tim Peake and there is an actual Mars Rover live in the studio! Also Konnie Huq talks about her role as a judge. Show more