Matt Baker and Alex Jones are joined by Lord Melvyn Bragg and stars of the Kumars, Meera Syal and Sanjeev Bhaskar. Justin Rowlatt reveals gadgets that can keep you awake at the wheel and Joe Crowley celebrates 50 years of the film Zulu. Plus, Lucy Siegle meets a group of ladies who are keeping roadsides clear of rubbish and Olympic Curling gold medallist Janice Rankin demonstrates the secrets to the game.