Dev is in for Greg James with the UK's new official Top 40.
Greg James counts down to the UK's new official Number 1.
Find out if Adele can make four weeks at No 1.
Greg James finds out if anyone can knock Adele from the top of the chart.
Adele is back. Find out where she is in the chart as Greg counts down the new Top 40!
The Vamps are among those trying to knock Sam Smith from the top of the chart...
To date, no Bond theme has made No 1. Greg asks if that could be about to change.
Find out if Ellie Goulding or Naughty Boy can knock Justin off the top of the chart.
Greg James counts down to the UK's official Number 1.
Greg James counts down to the UK's new official No 1 as Sigala challenges Mr Bieber...
Dev sits in for Greg James - find out if Rachel Platten can hold on to the top spot!
Dev counts down to the UK's new official No 1.
Greg James counts down to the UK's new official No 1.
Find out if One Direction can make it two weeks at the top with Greg.
Avicii, Little Mix and Sam Feldt try to knock David Zowie from the top spot.
Clara presents the last Official Chart on a Sunday before it heads to Friday afternoons.
Dev sits in for Clara Amfo to count down the Top 40 and reveal the UK's new Number 1.
Clara Amfo counts down the Top 40 and reveals the UK's new official Number 1.
Zedd, Walk the Moon and Rixton all try to knock Jason Derulo from the top spot!
Clara Amfo finds out if Jason Derulo can make it two weeks at the top.
Clara hears from Jason Derulo and reveals how his bid for the top spot has gone!
Clara chats to LunchMoney Lewis as he bids for the top spot.