Saturday Mash-Up

The cast of So Awkward and vlogger Houssein join Yasmin, Jonny and Hacker! But who will get slimed? Max and Harvey are put into detention and Hacker meets the new Doctor Who - Jodie Whittaker. There's cartoon action in new episodes of Dragons: Race to the Edge and the return of Mash-Up favourites Push-Off and How Many Things in the Thing? Also, for the first time on TV, Musical Toilets! It's totally live - so anything can happen!

RoadTrip and Lewys Ball are amongst the stars joining the Mash-Up gang. There's brand new cartoon action in Dragons: Race to the Edge, Nadiya Hussain is in detention, and there's favourite games Push Off, Musical Toilets and How Many Things In the Thing. It's totally live - so anything can happen!

Stars from The Dumping Ground and vloggers Olivia Grace and Lovevie join Jonny, Yasmin and Hacker. There's cartoon action in Dragons: Race to the Edge, Olly Murs is in detention and there's more Push-Off, Musical Toilets and How Many Things in the Thing.

New Hope Club are in the studio and performing their new single. Blue Peter's Lindsey Russell will be chatting about Blue Peter's big 60th birthday and someone will be slimed! Also, more Push-Off, Musical Toilets and How Many Things in the Thing. It's totally live - so anything can happen! Jonny Nelson, Yasmin Evans and Hacker T Dog host.

Hacker catches up with JoJo Siwa and The Vamps are in detention. There's music from Four of Diamonds and Jamie Johnson star Lenna Gunning Williams drops in for a chat. Also, more Push-Off, Musical Toilets.

HRVY and the Pets Factor vets are in the studio all morning. Hacker takes a trip behind the scenes at Holby City, and Strictly Come Dancing duo Lauren and AJ are in detention. Also, Push-Off, Musical Toilets and How Many Things in the Thing. It's totally live - so anything can happen.

In this episode, Hacker catches up with star of The Grinch, Benedict Cumberbatch. Mabel performs her new single, vlogger Tiana drops in and Dengineers host Joe Tracini is live all morning. There's cartoon action in two brand new episodes of Dragons: Race to the Edge, plus games galore including Push Off, Musical Toilets and How Many Things in the Thing. It's totally live - so anything can happen! Yasmin Evans, Jonny Nelson and Hacker T Dog host.

The cast of The Next Step are live in the studio all morning - but who will get slimed? Online singing sensation Sapphire performs live, while The Vamps are in detention. Plus Hacker takes a trip to Blackpool to go behind the scenes at Strictly Come Dancing. There's cartoon action in two brand new episodes of Dragons: Race to the Edge as well as Push Off, Musical Toilets and How Many Things In the Thing. It's totally live - so anything can happen! Yasmin Evans, Jonny Nelson and Hacker T. Dog host.

Hacker catches up with WWE stars The New Day, Briony from The Great British Bake Off drops in and John Farnworth has all the latest on Can You Kick It? Plus Danger Mouse's pal Penfold is in detention. There is cartoon action in two brand new episodes of Dragons: Race to the Edge, as well as favourite games including Push Off, Musical Toilets and How Many Things in the Thing. It's totally live - so anything can happen! Jonny Nelson, Yasmin Evans and Hacker T Dog host.

Ruby Rube, Kidz Bop and Coronation Street actors Joe Duttine and Colson Smith are in the studio all morning. It’s live – so anything can happen!

Sam and Mark, Rosie McClelland and X Factor stars Acacia and Aaliyah are live in the studio all morning. It’s live – so anything can happen!

Hacker goes behind the scenes at a pantomime and comedian Dara O’Briain is in detention.

A host of CBBC favourites drop in for a huge Christmas special. Hacker stars in A Mash-Up Christmas Carol - his own take on the story of Scrooge - featuring a guest appearance from Zoe Ball. And Roy Wood is in the studio to perform a Christmas classic. Jonny's dad competes against Yasmin's mum in Push Off and there's a slimy singalong. Plus the final two episodes of Dragons: Race to the Edge. Jonny Nelson, Yasmin Evans and Hacker T Dog host.

Two hours of live Saturday morning fun with Yasmin, Jonny and Hacker.

Oti Mabuse drops in to talk about her new show, The Greatest Dancer, but will she avoid the slime? Online stars Marcus and Martinus perform and Art Ninja joins in the fun. Plus Zara Larsson stays back after class in Detention Seekers. There's also Danger Mouse, Odd Squad and all your favourite games including Push Off and Question Slime. Jonny Nelson, Yasmin Evans and Hacker T Dog host.

Featuring Max & Harvey, Mark Ferris, Mabel and Drs Chris and Xand.

The stars of Almost Never and 4 O’Clock Club are live in the studio, and Hacker trains with the skaters at Dancing on Ice.

Naomi Wilkinson, Lauren Layfield and Jade Bird join Jonny, Yasmin and Hacker for the last programme in the series.