Mark Rylance, Quentin Blake, Gyles Brandreth, Marty Jopson

New BFG Mark Rylance joins Alex Jones and guest presenter Nina Wadia. Gyles Brandreth meets Quentin Blake to find out just how different the BFG might once have looked. Marty Jopson looks at the science of sailing with the help of Ben Ainslie's super-fast boat.