UK's top Dressage teams use Writtle College's revolutionary water tread mill

Writtle College say the country's top dressage competitors together with other horse owners and trainers are bringing their horses to use its rare new water treadmill. Equine Sports therapy degree student at Writtle, Kim Simon, has been showing BBC Essex Weekend reporter Andrew Merchant how it works and putting her own horse...Toffee ....through its paces :