Grand National course changes to reduce injury risk

Organisers of the world's most famous steeplechase say improvements to the Grand National course should reduce the risk to horses.

The Cheshire trainer Donald McCain has played a key part in the design of new fences at Aintree, which they hope will prevent further deaths and injuries.

For the first time, plastic and birch will replace the timber fences, and the start of the race has been moved to reduce the number of fallers.