With Mark Lawson. Very Important People is Channel 4's new sketch show which claims to reinvigorate the world of impressions. Performers Morgana Robinson and Terry Mynott discuss the physical and vocal transformations necessary to take on roles such as Adele, Bear Grylls and President Obama. The Brodsky Quartet, the British string quartet, celebrate their 40th birthday this year. As well as concentrating on the traditional quartet repertoire, they have also worked with Bjork, Elvis Costello and Paul McCartney. As they prepare to perform the complete Shostakovich Quartets this weekend, they discuss their work over four decades. Veteran playwright and director Edward Bond has been a controversial figure in British theatre, not least for his best-known play Saved, the violence that lies at the heart of much of his work and his outspoken views about today's theatre. As a UK premiere of a trilogy of his plays is staged in London, Bond gives a rare interview as he reflects on his theatrical career. Producer Philippa Ritchie.