"We did a study where we looked at jockeys - we have lots of female jockeys, particularly in point-to-point racing. The women actually fall off less often than the men but when they hit the ground, they have nearly four times the rate of concussion. It was about 3.6:1 compared to the men and that was very interesting for us but very, very difficult to explain. It's the same right the way around the world."