Front Row

Radio 4 celebrates the 40th anniversary of the iconic science fiction satire by Douglas Adams, The Hitchhiker's Guide to the Galaxy, with a new series this week. Comedy producer and friend of the originator John Lloyd stars as the voice of the book. He and radio producer Dirk Maggs talk about the return of the ground breaking show, which fans call H2G2.Tate Modern's first solo exhibition of Pablo Picasso focuses on one year of the great artist's life, 1932. Picasso's grandson, Olivier Widmaier Picasso and curator Nancy Ireson consider this period of great creativity for the artist, when he produced some of his most famous nude paintings of his muse and lover Marie-Therese Walter.David Oyelowo is best known for his roles in the films Selma as Dr. Martin Luther King Jr, and in A United Kingdom as a Botswanan prince. Now he's taking on his first comedy film in Gringo, about a man who gets caught up in the drug cartels in Mexico. David discusses playing comedy, Black Panther and colour blind casting.Presenter : S