DJ Fresh joins Jameela to find out where 'Dibby Dibby Sound' has landed in the Official Chart

Sam Smith joins Jameela to find out if he's the UK's Official Number 1

Coldplay, Lily Allen & Route 94 all have top 10 new entries, but who got number 1?

Duke Dumont & Jax Jones join us in the studio to find out if they have managed grab the number 1 spot!

5 Seconds of Summer join Jameela in the studio to find out where their single lands in the chart, plus Faul and Wad Ad speak to Jameela on the phone from Germany.

Aloe Blacc tops the Official Chart to get his first ever solo UK Number 1!

Both Sigma and The Vamps join Jameela as they battle to be the UK's Official Number 1

Kiesza and Shift K3Y join Jameela to find out where they've landed in the Official Chart Show more

Mr Probz and Neon Jungle join Jameela in the studio and Cash Cash check in from America

Jameela catches up with Calvin Harris as he finds out he's the UK's Official Number 1

Foxes joins Jameela in the studio to help reveal the new Top 40.

Rita Ora joins Jameela to find out if she can knock Mr Probz of the top spot! Plus fills us in on working with Calvin, Iggy Azalea and flying around the world!

Jameela is joined by SecondCity and Klingande call in for a video chat.

Ella Henderson joins Jameela as she tops the Official Chart for the first time

Chat from 5 Seconds Of Summer, George Ezra and Gorgon City, plus Ella Henderson makes it two weeks at the top!

Rixton and Nicole Scherzinger take on Will.i.am in the race for No 1.

Charli XCX joins Jameela, plus she catches up with Magic! and Union J take Radio 1 behind the scenes of their new video Tonight (We Live Forever).

Jameela chats to Bars & Melody and Melissa Steele as they battle Cheryl Cole for No 1!

Kiesza checks in from New York, Rizzle Kicks chat to Scott and the race for Number 1 is on - can Nico & Vinz make it 2 weeks at the top?

Listen or watch as Jameela counts down the Top 10 to reveal the UK's new Official No 1 with all the videos streamed live online at bbc.co.uk/radio1.