The Randox Grand National is the ultimate test of skill and bravery, and for trainer Joe Tizzard, it's the race of a lifetime. Part six takes you behind the scenes as Joe and his team gear up for the most unique steeplechase in the world at Aintree Racecourse. Witness the drama as the race attracts media attention from around the world including threat of disruption by protestors. When the dust settles and the race is over, we find out what the future holds for Joe and his horses.
