Sit Down, Stand Up - Millie Bobby Brown

Leo Woodhall plays Sit Down, Stand Up

Luke Thompson & Yerin Ha go through their contacts to play a game of Sit Down Stand Up.

Mumford & Sons chat go through their contacts to play a game of Sit Down Stand Up.

Ollie Bearman calls his famous friends - will they be sitting or standing?

Joe Keery & Gaten Matarazzo go through their contacts to play a game of Sit Down Stand Up

Jeremy Allen White & Stephen Graham join Greg to play Sit Down, Stand up.

Dwayne Johnson joins Greg and play Sit Down, Stand Up.

Bob Mortimer plays Sit Down, Stand Up

Tommy Fury and Greg James call Iain Stirling, Molly Mae & John Fury for Sit Down Stand Up

Joseph Quinn & Ebon Moss-Bachrach play Sit Down, Stand Up with Greg James.

Jameela Jamil & Greg James go through their contacts to play a game of Sit Down Stand Up.

Lorde cold calls Chappell Roan, Gracie Abrams and a very hungover Charli XCX on Radio 1.

Jordan Stephens plays Sit Down, Stand Up on the Radio 1 Breakfast Show with Greg James.

James Corden & Ruth Jones play Sit Down, Stand Up on the Radio 1 Breakfast show.

Who will answer to JADE and Greg James? When they ask: are you sitting or standing?

Daisy Edgar Jones plays Sit Down Stand Up and calls her movie star best friend.

Perrie Edwards plays Sit Down, Stand Up on the Radio 1 Breakfast Show with Greg James.

Paul Mescal plays Sit Down, Stand Up with Greg James on the Radio 1 Breakfast show.

Leigh-Anne Pinnock plays Sit Down, Stand Up on the Radio 1 Breakfast show.

Will Poulter plays Sit Down, Stand Up on the Radio 1 Breakfast show.

Nicholas Hoult plays Sit Down, Stand Up on the Radio 1 Breakfast show.

Calvin Harris plays Sit Down, Stand Up on the Radio 1 Breakfast show with Greg James.

Idris plays Sit Down Stand Up with Greg and calls a fashion icon and a Luther co-star.

KSI plays Sit Down, Stand Up on Radio 1 Breakfast with Greg James.

Ant & Dec play Sit Down Stand Up with Greg James.

John Boyega and Greg James play Sit Down, Stand Up on Radio 1.

Tom Holland and Greg James cold call celebrity friends to play Sit Down, Stand Up.