The Reunion Radio 4, 11.15am

Kirsty Wark kicks off the latest series by bringing together Todd Carty (right), Susan Tully, Lee MacDonald and Erkan Mustafa for a discussion about the school drama Grange Hill. They describe their time on the long-running show as well as its often controversial storylines. A new eight-part run of Natalie Haynes Stands Up For The Classics (Radio 4, 4.30pm) begins by examining why ripe pomegranates and squashed grapes could be important to our understanding of Pompeii’s ruins. In his final show, Paul O’Grady (Radio 2, 5pm) plays songs by Tina Turner and Celine Dion and bids farewell to producer Malcolm Prince.