Clare Balding presents the build up to the world's greatest horse race, The John Smith's Grand National, featuring news and interviews with some of the major players in this year's great race. As part of the build up there are two races from Aintree. With Rishi Persad, Norman Williamson, Richard Dunwoody, Richard Pitman and John Parrott. Race commentary from Jim McGrath, Ian Bartlett, Tony O'Hehir and Darren Owen. Show less