Horses and road safety, Sheep DNA detective work, Learning to be an auctioneer

The British Horse Society is getting more reports of dangerous incidents on the roads which involve horses. We're out with riders in the Cotswolds, and we hear from the BHS's director of safety. We've a detective story from Wales - police there have been using DNA to catch a sheep rustler. And the livestock auctioneers of the future - we hear from the next generation.
Presented by Sybil Ruscoe.