Front Row - Yes Prime Minister on stage; live report from Cannes

Henry Goodman and David Haig, who are starring as Sir Humphrey and Prime Minister Jim Hacker in a stage version of Yes Prime Minister, discuss what it's like to step into the shoes of Paul Eddington and Nigel Hawthorne who made such an indelible impression in the tv series. Abi Morgan, author of Sex Traffic, talks about her new tv drama Royal Wedding, set in 1981 on the eve of Prince Charles and Lady Diana's wedding, and explains why she finds writing television drama much easier than writing stage plays. Jason Solomons reports live from the Cannes Film Festival. In the new film Hot Tub Time Machine the eponymous hot tub takes its occupants back to the 1980s. For would-be time-travellers who don't wish to arrive soaking wet, science fiction expert Roger Luckhurst considers the range of other time-machines available on the market.