1. Elizaeth McGovern, Michelle Dockery, Stephen Fry, Craig David, Martin Freeman, Charli XCX & Christine and The Queens
First broadcast: Saturday 14th September 2019
The host is joined for the launch of a new series by Downton Abbey stars Elizabeth McGovern and Michelle Dockery, who discuss reviving the period drama for a new movie. Other guests include Stephen Fry, Craig David and Martin Freeman, currently starring in true-life crime drama A Confession. Plus, Charli XCX and Christine and The Queens perform together in the studio.
First broadcast: Saturday 21st September 2019
The host is joined in the studio for a chat by another group of celebrity guests. Dropping by this week are Sean Bean, Brassic star Michelle Keegan, comedian Rose Matafeo, and Liam Gallagher, who will also be performing live.
First broadcast: Saturday 28th September 2019
The host is joined by guests including actor and singer Adam Lambert, Spice Girl Mel B, comedian Russell Howard and award-winning actress Emily Mortimer. Plus, chart-topping singer Ava Max will be performing in the studio.
First broadcast: Saturday 5th October 2019
The host is joined in the studio by EastEnders' Danny Dyer, boy band McFly, comedian, actor and writer Roisin Conaty, and comic and chat show host Mo Gilligan. Plus, Irish singer-songwriter Dermot Kennedy will be performing live.
First broadcast: Saturday 12th October 2019
First broadcast: Saturday 19th October 2019
Jonathan is joined by music icon Iggy Pop, star of the hotly anticipated new Breaking Bad movie El Camino, Aaron Paul, comedian Jack Whitehall and Radio 1 DJ Maya Jama. Plus, BRIT Award-winning Sam Fender performs a track from his number one album.
7. Shirley Ballas, Craig Revel Horwood, Motsi Mabuse, Liam Payne, Nish Kumar, Jonathan Van Ness, Tom Walker
First broadcast: Saturday 26th October 2019
The host is joined in the studio by Strictly Come Dancing judges Shirley Ballas, Craig Revel Horwood and Motsi Mabuse, as well as former One Direction star-turned solo singer Liam Payne, comedian Nish Kumar, Queer Eye presenter Jonathan Van Ness and Brit award-winning Scottish singer-songwriter Tom Walker.
First broadcast: Saturday 2nd November 2019
The host's guests this week are broadcasting icon Trevor McDonald, footballer Peter Crouch, model Jourdan Dunn and award-winning comedian Aisling Bea. Plus, singers John Newman and Nina Nesbitt will be performing together in the studio.
First broadcast: Saturday 9th November 2019
The host's guests this week are The X Factor: Celebrity judges Nicole Scherzinger and Louis Walsh, along with stand-up comedian Tom Allen. Plus, Tiesto and Mabel will be performing together in the studio.
First broadcast: Saturday 16th November 2019
With John Bishop, who is currently on a UK tour; The Great British Bake Off's Paul Hollywood; rising stand-up Suzi Ruffell; and Naomi Ackie, soon to be seen in the next Star Wars movie. Plus, Halsey performs in the studio.
First broadcast: Saturday 23rd November 2019
The host is joined in the studio by comedian, author and Britain's Got Talent judge David Walliams; and Edward Norton, who has recently directed his second movie, crime drama Motherless Brooklyn. Also dropping in are the stars of the new Charlie's Angels movie, Kristen Stewart, Naomi Scott and Ella Balinska, and Robbie Williams, who will be performing live.
First broadcast: Saturday 30th November 2019
The host is joined by guests tennis champion Andy Murray, Luke Evans, recently seen in Second World War drama Midway, doctor-turned-comic and author Adam Kay, and comedian Desiree Burch. Plus, one of the biggest and hottest artists in the country, Stormzy, is chatting and performing in the studio.
First broadcast: Saturday 7th December 2019
A special appearance by one of the most famous bands in the history of music, The Who, chatting and performing in the studio ahead of their first new album in 13 years. Also appearing are The Grand Tour and Who Wants to Be A Millionaire? host Jeremy Clarkson, and Bafta-nominated actor Samson Kayo.
NEW EPISODE: Saturday 14th December 2019 at 10:10pm on ITV
The host is joined on the sofa by Cats stars Rebel Wilson and Jason Derulo, promoting the big-screen version of the famous Andrew Lloyd Webber musical. World Cup-winning England cricketer Jofra Archer, Rocketman actor Taron Egerton and former Bake Off presenter Mel Giedroyc also drop by, and there is music by Keane.
NEW EPISODE: Tuesday 24th December 2019 at 9pm on ITV
The host welcomes another batch of celebrity guests to his famous green room for a special Christmas edition of the talk show. He is joined by David Tennant, whose demonic role in Terry Pratchett and Neil Gaiman's Good Omens will be coming to BBC in the new year, as well as singers Rita Ora and Jamie Cullum, former X Factor judge Sharon Osbourne, Strictly Come Dancing: It Takes Two presenter Rylan Clark-Neal, award-winning Hollywood star David Oyelowo and comedian Bec Hill.