Trainer David Pipe explains what makes a good Grand National horse

David Pipe, who trained the 2008 Grand National winner Comply or Die gives explains to BBC South West what makes a good Aintree horse using one of his runners for this year's race, The Package.

Devon-based Pipe also has Our Father and Swing Bill running on Saturday afternoon.

There will be live coverage of the Grand National on BBC Radio Five live and from 13:00 GMT.