Patrick Galbraith meets Marcus Armytage, Grand National-winning jockey and Scribehounder, at his home in Berkshire to find out what   it takes to win the most famous horse race in the world. Patrick learns about Marcus’ route into racing and why he never made the step from amateur to professional, despite still holding the record for the National. Next Patrick visits legendary National Hunt trainer Oliver Sherwood, who trained two Hennesey Gold Cup winning horses, Arctic Call and Many Clouds. Oliver explains what it takes to become a successful National Hunt trainer and why dealing with owners is such a challenge.If you're curious about the countryside, subscribe to Scribehound to get daily reads from leading rural writers.